{"schema_version":"1.0","dataset":"rules","generated":"2026-09-17","note":"generated is the build date, not a verification date; every record carries its own checked dates","count":30,"site":"https://leisurepowercheck.co.uk","records":[{"id":"C1-mismatch","checker":"chargers","statement":"Mains chargers with selectable chemistry modes carry a first-party warning to select the charge mode appropriate to the battery type: Victron's Blue Smart IP65 manual states it is important 'to ensure proper charging, battery longevity and safe operation' and refers the user to the battery manufacturer's recommendations, and separately warns not to charge Li-ion batteries below 0°C. The chargers page shows the maker's own mode-selection warning next to each charger's published profiles.","evidence":"manufacturer","implemented":true,"not_implemented_reason":null,"value":null,"jurisdiction":null,"ui_label":"Select the charge mode for the battery chemistry: the charger maker's own warning","sources":[{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Blue_Smart_IP65_Charger_230V_manual/181363-Blue_Smart_Charger-pdf-en.pdf","document_title":"Victron Energy, Blue Smart IP65 Charger 12/4, 12/5, 12/7, 12/10, 12/15, 12/25, 24/5, 24/8, 24/13 | 230V manual","document_date":"2025-08","document_edition":"Rev. 05 - 08/2025","checked":"2026-09-16","evidence":"manufacturer","quote":"To ensure proper charging, battery longevity and safe operation it is important to select a charge mode appropriate for the battery type and capacity being charged; refer to the battery manufacturer's recommendations.","clause":"4.2.1. Charge voltage","jurisdiction":null,"hosted_by":"manufacturer","note":"This is a mode-selection warning, not an explicit sentence naming the consequence of running Li-ion mode on a lead-acid battery or vice versa; no such explicit sentence was found in this manual."},{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Blue_Smart_IP65_Charger_230V_manual/181363-Blue_Smart_Charger-pdf-en.pdf","document_title":"Victron Energy, Blue Smart IP65 Charger 12/4, 12/5, 12/7, 12/10, 12/15, 12/25, 24/5, 24/8, 24/13 | 230V manual","document_date":"2025-08","document_edition":"Rev. 05 - 08/2025","checked":"2026-09-16","evidence":"manufacturer","quote":"Warning: Do not charge Li-ion batteries if the battery temperature is below 0°C.","clause":"3. Features, I. Lithium Ion compatible","jurisdiction":null,"hosted_by":"manufacturer","note":"Also stated in 1. Safety instructions: 'D. Do not charge non-rechargeable batteries or Li-ion batteries if the battery temperature is below 0°C.'"},{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Orion_XS_12-12-50A_DC-DC_battery_charger/124067-Orion_XS_DC-DC_battery_charger-pdf-en.pdf","document_title":"Victron Energy, Manual - Orion XS 12/12-50A DC-DC battery charger","document_date":"2026-06","document_edition":"Rev 11 - 06/2026","checked":"2026-09-16","evidence":"manufacturer","quote":"Open the VictronConnect App to set up the product (always set up the correct charging algorithm before connecting a battery to the output).","clause":"3.8. Connection setup for charger mode, step 3","jurisdiction":null,"hosted_by":"manufacturer","note":"Same first-party position from the DC-DC manual."}],"checked":"2026-09-16","note":"CTEK's manual was not consulted on 2026-09-16. If a charger record publishes its own chemistry-mismatch warning the record's wording is shown instead of this default.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["victronenergy.com"],"distributor_hosted":false,"evidence_grades":["manufacturer"],"anchor":"#C1-mismatch"},{"id":"D1","checker":"charging_method","statement":"Battery chemistry LiFePO4 points to a DC-DC charger. A relay connects a low-impedance lithium bank directly across the alternator. Victron: controlled charging protects the alternator in lithium systems because low impedance results in a high alternator current. Sterling: its alternator-to-battery system is not a current limiting system and is not recommended for lithium without an external current limiter.","evidence":"manufacturer","implemented":true,"not_implemented_reason":null,"value":{"chemistry":"lifepo4","recommendation":"dcdc"},"jurisdiction":null,"ui_label":"LiFePO4: DC-DC charger (two independent manufacturers)","sources":[{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Orion_XS_12-12-50A_DC-DC_battery_charger/124067-Orion_XS_DC-DC_battery_charger-pdf-en.pdf","document_title":"Victron Energy, Manual - Orion XS 12/12-50A DC-DC battery charger","document_date":"2026-06","document_edition":"Rev 11 - 06/2026","checked":"2026-09-16","evidence":"manufacturer","quote":"Controlled charging also protects the alternator in lithium systems from overloading, as the low impedance of lithium batteries results in a high alternator current.","clause":"2.1. Introduction","jurisdiction":null,"hosted_by":"manufacturer","note":null},{"field_group":"value","url":"https://sterling-power.com/products/alternator-to-battery-chargers-up-to-130a","document_title":"Sterling Power Products, Alternator to Battery Chargers up to 130A (product page)","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"NOT RECOMMENDED FOR USE WITH LITHIUM BATTERIES WITHOUT AN EXTERNAL CURRENT LIMITER - The AB system is not a current limiting system and will allow your lithium to draw as much current as it sees available.","clause":"Product description","jurisdiction":null,"hosted_by":"manufacturer","note":"The AB (alternator to battery) charger is Sterling's uncontrolled-current product; the statement is about connecting lithium without current limiting, which is also the relay case."}],"checked":"2026-09-16","note":"Two independent manufacturer sources. The checker states the reason (alternator current) and does not give wiring instructions.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["victronenergy.com","sterling-power.com"],"distributor_hosted":false,"evidence_grades":["manufacturer"],"anchor":"#D1"},{"id":"D2","checker":"charging_method","statement":"A smart / ECU-controlled (Euro 5-6) alternator points to a DC-DC charger. A voltage-sensing relay needs a sustained high alternator voltage that a smart alternator does not provide: Victron publishes the smart-alternator range as 12.5V to 15V and says such alternators often supply charging voltage that is too low even with the engine running; Sterling says its uncontrolled alternator-to-battery charger is not suitable for European and Japanese vehicles with regenerative braking systems.","evidence":"manufacturer","implemented":true,"not_implemented_reason":null,"value":{"alternator":"smart","recommendation":"dcdc","smart_alternator_range_v":[12.5,15]},"jurisdiction":null,"ui_label":"Smart / ECU-controlled alternator: DC-DC charger (two independent manufacturers)","sources":[{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Orion_XS_12-12-50A_DC-DC_battery_charger/124067-Orion_XS_DC-DC_battery_charger-pdf-en.pdf","document_title":"Victron Energy, Manual - Orion XS 12/12-50A DC-DC battery charger","document_date":"2026-06","document_edition":"Rev 11 - 06/2026","checked":"2026-09-16","evidence":"manufacturer","quote":"It is common for vehicle manufacturers to install \"smart\" ECU (Engine Control Unit) controlled alternators to increase fuel efficiency and reduce emissions. Smart alternators provide variable output voltage and shut down when not needed.","clause":"2.2. Features / Smart alternator compatibility","jurisdiction":null,"hosted_by":"manufacturer","note":null},{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Orion_XS_12-12-50A_DC-DC_battery_charger/124067-Orion_XS_DC-DC_battery_charger-pdf-en.pdf","document_title":"Victron Energy, Manual - Orion XS 12/12-50A DC-DC battery charger","document_date":"2026-06","document_edition":"Rev 11 - 06/2026","checked":"2026-09-16","evidence":"manufacturer","quote":"Conventional alternators will generate a fixed voltage (e.g. 14V), whereas the voltage of smart alternators can vary between 12.5V to 15V (for a 12V system). Smart alternators in a regenerative braking system often show large voltage variations.","clause":"4.1. Engine shutdown detection","jurisdiction":null,"hosted_by":"manufacturer","note":null},{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Orion_XS_12-12-50A_DC-DC_battery_charger/124067-Orion_XS_DC-DC_battery_charger-pdf-en.pdf","document_title":"Victron Energy, Manual - Orion XS 12/12-50A DC-DC battery charger","document_date":"2026-06","document_edition":"Rev 11 - 06/2026","checked":"2026-09-16","evidence":"manufacturer","quote":"Especially in the case of vehicles with a Euro 5 or 6 smart alternator, which often supplies charging voltage that is too low even with the engine running or in the event of a voltage drop over long cables, controlled charging is crucial.","clause":"2.1. Introduction","jurisdiction":null,"hosted_by":"manufacturer","note":null},{"field_group":"value","url":"https://sterling-power.com/products/alternator-to-battery-chargers-up-to-130a","document_title":"Sterling Power Products, Alternator to Battery Chargers up to 130A (product page)","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"The alternator to battery charger is an easy way to add advanced charging to many vehicle and engines, it is still very much suitable for most American Vehicles and most marine and other engines, but it is not suitable for modern vehicles / vans sold in Europe (Ford, VW, Merc, Renault, Citroen etc) and Japanese vehicles which have the new Euro Re Generative braking control systems fitted to the vehicle, for these vehicles you must use the Battery to Battery charger range off products, look for the Regenerative Friendly Braking logo.","clause":"Product description, 'Please note:' paragraph","jurisdiction":null,"hosted_by":"manufacturer","note":"'range off products' is as printed."}],"checked":"2026-09-16","note":"The alternator type is established by measurement (D8-measure) or the vehicle maker's own statement, never by model year (D9-year).","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["victronenergy.com","sterling-power.com"],"distributor_hosted":false,"evidence_grades":["manufacturer"],"anchor":"#D2"},{"id":"D3","checker":"charging_method","statement":"A relay delivers whatever voltage the alternator delivers. If the leisure battery's published charge voltage is above the alternator's working voltage a relay cannot fully charge it. Victron LFP Smart: charge voltage between 14 V and 14,4 V (14,2 V recommended); Victron AGM Deep Cycle absorption 14,2 - 14,6 V (normal cycle service); smart alternator working range 12.5V to 15V.","evidence":"manufacturer","implemented":true,"not_implemented_reason":null,"value":{"lfp_charge_v":[14,14.4],"lfp_recommended_v":14.2,"agm_absorption_normal_v":[14.2,14.6],"gel_absorption_v":[14.1,14.4],"conventional_alternator_example_v":14,"smart_alternator_range_v":[12.5,15]},"jurisdiction":null,"ui_label":"Battery's published charge voltage vs the alternator voltage a relay would pass through","sources":[{"field_group":"value.lfp_charge_v","url":"https://www.victronenergy.com/upload/documents/Datasheet-12,8-&-25,6-Volt-lithium-iron-phosphate-batteries-Smart-EN.pdf","document_title":"Victron Energy datasheet: 12,8 & 25,6 Volt Lithium-Iron-Phosphate Batteries Smart","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"Charge voltage: Between 14 V/28 V and 14,4 V/28,8 V (14,2 V/28,4 V recommended)","clause":"Battery specification table, Charge voltage row","jurisdiction":null,"hosted_by":"manufacturer","note":null},{"field_group":"value.agm_absorption_v","url":"https://www.victronenergy.com/upload/documents/Datasheet-GEL-and-AGM-Batteries-EN.pdf","document_title":"Victron Energy datasheet: Gel and AGM Batteries","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"Victron AGM 'Deep Cycle': Absorption, Cycle service Normal (V) 14,2 - 14,6; Fastest recharge (V) 14,6 - 14,9; Float 13,5 - 13,8; Storage 13,2 - 13,5","clause":"Table 3: Recommended charge voltage","jurisdiction":null,"hosted_by":"manufacturer","note":"Gel 'Deep Cycle' absorption is 14,1 - 14,4 V."},{"field_group":"value.alternator_v","url":"https://www.victronenergy.com/upload/documents/Orion_XS_12-12-50A_DC-DC_battery_charger/124067-Orion_XS_DC-DC_battery_charger-pdf-en.pdf","document_title":"Victron Energy, Manual - Orion XS 12/12-50A DC-DC battery charger","document_date":"2026-06","document_edition":"Rev 11 - 06/2026","checked":"2026-09-16","evidence":"manufacturer","quote":"Conventional alternators will generate a fixed voltage (e.g. 14V), whereas the voltage of smart alternators can vary between 12.5V to 15V (for a 12V system).","clause":"4.1. Engine shutdown detection","jurisdiction":null,"hosted_by":"manufacturer","note":null}],"checked":"2026-09-16","note":"The checker compares the battery record's own published charge/absorption voltage with the measured alternator voltage the reader enters (D8-measure). The figures here are the named Victron examples.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["victronenergy.com"],"distributor_hosted":false,"evidence_grades":["manufacturer"],"anchor":"#D3"},{"id":"D4","checker":"charging_method","statement":"Cable run length penalises a relay specifically: a relay passes the full cable voltage drop through to the leisure battery, whereas a DC-DC charger regulates its output regardless of input. Victron's worked example: 5 m run, 16 mm2, 50 A gives 550 mV drop across the round trip.","evidence":"manufacturer","implemented":true,"not_implemented_reason":null,"value":{"example":{"one_way_m":5,"round_trip_m":10,"cable_mm2":16,"current_a":50,"resistance_mohm_per_m":1.1,"drop_mv":550}},"jurisdiction":null,"ui_label":"Long cable runs penalise relays: the drop is passed straight to the battery (Victron worked example 5 m / 16 mm2 / 50 A = 550 mV)","sources":[{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Orion_XS_12-12-50A_DC-DC_battery_charger/124067-Orion_XS_DC-DC_battery_charger-pdf-en.pdf","document_title":"Victron Energy, Manual - Orion XS 12/12-50A DC-DC battery charger","document_date":"2026-06","document_edition":"Rev 11 - 06/2026","checked":"2026-09-16","evidence":"manufacturer","quote":"Especially in the case of vehicles with a Euro 5 or 6 smart alternator, which often supplies charging voltage that is too low even with the engine running or in the event of a voltage drop over long cables, controlled charging is crucial.","clause":"2.1. Introduction","jurisdiction":null,"hosted_by":"manufacturer","note":null},{"field_group":"value.example","url":"https://www.victronenergy.com/upload/documents/Orion_XS_12-12-50A_DC-DC_battery_charger/124067-Orion_XS_DC-DC_battery_charger-pdf-en.pdf","document_title":"Victron Energy, Manual - Orion XS 12/12-50A DC-DC battery charger","document_date":"2026-06","document_edition":"Rev 11 - 06/2026","checked":"2026-09-16","evidence":"manufacturer","quote":"Example: Calculate the input cable voltage drop: Distance between starter battery and charger: 5m. Vshutdown= 13,1V. Recommended wire gauge: 16mm2. Cable resistance: ~1,1 mΩ/m @20 °C, thus Rcable = 1,1mΩ x 10m (2 x 5m) = 11mΩ. At a maximum input current of 50A, this results in: Vcable = 11mΩ x 50A = 550mV.","clause":"4.5.6. Engine shutdown detection & input voltage lock-out (Input voltage lock-out)","jurisdiction":null,"hosted_by":"manufacturer","note":"Spec cites section 4.5.7; the example is in 4.5.6. Bullets flattened to one line; the Ω glyph did not survive text extraction and is restored from context (mΩ)."},{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Orion_XS_12-12-50A_DC-DC_battery_charger/124067-Orion_XS_DC-DC_battery_charger-pdf-en.pdf","document_title":"Victron Energy, Manual - Orion XS 12/12-50A DC-DC battery charger","document_date":"2026-06","document_edition":"Rev 11 - 06/2026","checked":"2026-09-16","evidence":"manufacturer","quote":"If there is a voltage drop over the battery cables, the Orion XS will output the correct voltage, but the batteries will receive a lower voltage.","clause":"5.2.4. Battery cable voltage drop","jurisdiction":null,"hosted_by":"manufacturer","note":"States the DC-DC output is regulated at the charger; drop on the output side still matters."}],"checked":"2026-09-16","note":"No wiring instruction is given; the checker states the effect and points to the maker's cable table.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["victronenergy.com"],"distributor_hosted":false,"evidence_grades":["manufacturer"],"anchor":"#D4"},{"id":"D5","checker":"charging_method","statement":"A DC-DC charger lets the installer cap the current drawn from the alternator; a relay (or an uncontrolled alternator-to-battery charger) does not. Victron's Orion XS input current limit is configurable from 1 A to 50 A 'to avoid overloading an alternator'; Sterling states its AB system 'is not a current limiting system'.","evidence":"manufacturer","implemented":true,"not_implemented_reason":null,"value":{"orion_xs_input_limit_a":[1,50]},"jurisdiction":null,"ui_label":"DC-DC charger: input current can be capped; relay: it cannot","sources":[{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Orion_XS_12-12-50A_DC-DC_battery_charger/124067-Orion_XS_DC-DC_battery_charger-pdf-en.pdf","document_title":"Victron Energy, Manual - Orion XS 12/12-50A DC-DC battery charger","document_date":"2026-06","document_edition":"Rev 11 - 06/2026","checked":"2026-09-16","evidence":"manufacturer","quote":"Input current: Limits the maximum current drawn from the input source. This is particularly important to avoid overloading an alternator or other weak input sources. The value can be adjusted between 1 A and 50 A in 0.1 A increments.","clause":"4.5.2. Charger mode settings","jurisdiction":null,"hosted_by":"manufacturer","note":null},{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Orion_XS_12-12-50A_DC-DC_battery_charger/124067-Orion_XS_DC-DC_battery_charger-pdf-en.pdf","document_title":"Victron Energy, Manual - Orion XS 12/12-50A DC-DC battery charger","document_date":"2026-06","document_edition":"Rev 11 - 06/2026","checked":"2026-09-16","evidence":"manufacturer","quote":"If VIN ≤ Vshutdown, the charge current will be reduced to prevent VIN to drop below Vshutdown.","clause":"4.2. Engine shutdown detection sequence, step 2 -> 3","jurisdiction":null,"hosted_by":"manufacturer","note":"The comparison glyph did not survive text extraction; restored as ≤ from the sequence logic (step 2 is 'If VIN > Vshutdown')."},{"field_group":"value","url":"https://sterling-power.com/products/alternator-to-battery-chargers-up-to-130a","document_title":"Sterling Power Products, Alternator to Battery Chargers up to 130A (product page)","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"The AB system is not a current limiting system and will allow your lithium to draw as much current as it sees available.","clause":"Product description","jurisdiction":null,"hosted_by":"manufacturer","note":null}],"checked":"2026-09-16","note":null,"type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["victronenergy.com","sterling-power.com"],"distributor_hosted":false,"evidence_grades":["manufacturer"],"anchor":"#D5"},{"id":"D6","checker":"charging_method","statement":"Alternator output headroom: the DC-DC charger's input current must be within what the alternator can spare. No published rule was found for what share of an alternator's rated output may be drawn continuously. The checker states the constraint and tells the reader to check the vehicle manufacturer's alternator figure; it outputs no percentage.","evidence":"unverified","implemented":false,"not_implemented_reason":"No manufacturer document read on 2026-09-16 publishes what share of an alternator's rated output may be drawn continuously by a DC-DC charger. Spec section 2.4.1 D6.","value":null,"jurisdiction":null,"ui_label":"Alternator headroom: no published rule; check your vehicle maker's alternator rating","sources":[{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Orion_XS_12-12-50A_DC-DC_battery_charger/124067-Orion_XS_DC-DC_battery_charger-pdf-en.pdf","document_title":"Victron Energy, Manual - Orion XS 12/12-50A DC-DC battery charger","document_date":"2026-06","document_edition":"Rev 11 - 06/2026","checked":"2026-09-16","evidence":"manufacturer","quote":"This is particularly important to avoid overloading an alternator or other weak input sources.","clause":"4.5.2. Charger mode settings (Input current)","jurisdiction":null,"hosted_by":"manufacturer","note":"States the risk; gives no share-of-rated-output figure."},{"field_group":"value.share_of_rated_output","url":"https://www.victronenergy.com/upload/documents/Orion_XS_12-12-50A_DC-DC_battery_charger/124067-Orion_XS_DC-DC_battery_charger-pdf-en.pdf","document_title":"Victron Energy, Manual - Orion XS 12/12-50A DC-DC battery charger","document_date":"2026-06","document_edition":"Rev 11 - 06/2026","checked":"2026-09-16","evidence":"manufacturer","absent":true,"clause":"Whole manual, including 5.2.6. Insufficient alternator power","jurisdiction":null,"hosted_by":"manufacturer","note":"Checked 2026-09-16: no rule for what fraction of an alternator's rated output may be drawn continuously."}],"checked":"2026-09-16","note":null,"type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["victronenergy.com"],"distributor_hosted":false,"evidence_grades":["manufacturer"],"anchor":"#D6"},{"id":"D7","checker":"charging_method","statement":"A voltage-sensing relay remains defensible where all three hold: a conventional fixed-voltage alternator, a lead-acid leisure battery, and a short cable run. Sterling states its uncontrolled alternator-to-battery charger is 'still very much suitable for most American Vehicles and most marine and other engines'; Victron gives ~14V as the conventional alternator's fixed voltage.","evidence":"manufacturer","implemented":true,"not_implemented_reason":null,"value":{"conditions":["conventional_fixed_voltage_alternator","lead_acid","short_run"],"recommendation":"relay_defensible"},"jurisdiction":null,"ui_label":"Relay still defensible: fixed-voltage alternator + lead-acid + short run","sources":[{"field_group":"value","url":"https://sterling-power.com/products/alternator-to-battery-chargers-up-to-130a","document_title":"Sterling Power Products, Alternator to Battery Chargers up to 130A (product page)","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"The alternator to battery charger is an easy way to add advanced charging to many vehicle and engines, it is still very much suitable for most American Vehicles and most marine and other engines, but it is not suitable for modern vehicles / vans sold in Europe (Ford, VW, Merc, Renault, Citroen etc) and Japanese vehicles which have the new Euro Re Generative braking control systems fitted to the vehicle, for these vehicles you must use the Battery to Battery charger range off products, look for the Regenerative Friendly Braking logo.","clause":"Product description, 'Please note:' paragraph","jurisdiction":null,"hosted_by":"manufacturer","note":null},{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Orion_XS_12-12-50A_DC-DC_battery_charger/124067-Orion_XS_DC-DC_battery_charger-pdf-en.pdf","document_title":"Victron Energy, Manual - Orion XS 12/12-50A DC-DC battery charger","document_date":"2026-06","document_edition":"Rev 11 - 06/2026","checked":"2026-09-16","evidence":"manufacturer","quote":"Conventional alternators will generate a fixed voltage (e.g. 14V), whereas the voltage of smart alternators can vary between 12.5V to 15V (for a 12V system).","clause":"4.1. Engine shutdown detection","jurisdiction":null,"hosted_by":"manufacturer","note":null}],"checked":"2026-09-16","note":"'Defensible' not 'recommended': the checker presents both options with the published reasons and never a single verdict.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["sterling-power.com","victronenergy.com"],"distributor_hosted":false,"evidence_grades":["manufacturer"],"anchor":"#D7"},{"id":"D8-measure","checker":"charging_method","statement":"Test, don't guess: with the engine at normal running temperature, measure the voltage at the starter battery terminals. Victron cites a fixed ~14V for a conventional alternator and 12.5V to 15V for a smart alternator. Its Orion XS default delayed-start voltage of 13.3V and shutdown voltage of 13.1V (smart alternator) are the manufacturer's own engine-detection thresholds and are cited as such, not as a diagnostic standard.","evidence":"manufacturer","implemented":true,"not_implemented_reason":null,"value":{"conventional_fixed_example_v":14,"smart_range_v":[12.5,15],"orion_xs_defaults_smart":{"delayed_start_v":13.3,"shutdown_v":13.1,"start_v":14},"orion_xs_defaults_regular":{"delayed_start_v":13.8,"shutdown_v":13.5}},"jurisdiction":null,"ui_label":"13.3 V / 13.1 V are Victron's Orion XS engine-detection defaults: the manufacturer's detection thresholds, not a diagnostic standard","sources":[{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Orion_XS_12-12-50A_DC-DC_battery_charger/124067-Orion_XS_DC-DC_battery_charger-pdf-en.pdf","document_title":"Victron Energy, Manual - Orion XS 12/12-50A DC-DC battery charger","document_date":"2026-06","document_edition":"Rev 11 - 06/2026","checked":"2026-09-16","evidence":"manufacturer","quote":"Conventional alternators will generate a fixed voltage (e.g. 14V), whereas the voltage of smart alternators can vary between 12.5V to 15V (for a 12V system). Smart alternators in a regenerative braking system often show large voltage variations.","clause":"4.1. Engine shutdown detection","jurisdiction":null,"hosted_by":"manufacturer","note":null},{"field_group":"value.delayed_start_v","url":"https://www.victronenergy.com/upload/documents/Orion_XS_12-12-50A_DC-DC_battery_charger/124067-Orion_XS_DC-DC_battery_charger-pdf-en.pdf","document_title":"Victron Energy, Manual - Orion XS 12/12-50A DC-DC battery charger","document_date":"2026-06","document_edition":"Rev 11 - 06/2026","checked":"2026-09-16","evidence":"manufacturer","quote":"Delayed start voltage (Vstart(delay)): Smart alternators can generate a lower voltage when the engine is running, therefore a lower start level is necessary for these systems. ... Default: 13.3V/26.6V (smart alternator) and 13.8/27.4V (regular alternator).","clause":"4.5.6. Engine shutdown detection & input voltage lock-out","jurisdiction":null,"hosted_by":"manufacturer","note":"Spec cites section 4.5.7; the defaults are in 4.5.6. Middle sentences about starter-battery replenishment elided with an ellipsis."},{"field_group":"value.shutdown_v","url":"https://www.victronenergy.com/upload/documents/Orion_XS_12-12-50A_DC-DC_battery_charger/124067-Orion_XS_DC-DC_battery_charger-pdf-en.pdf","document_title":"Victron Energy, Manual - Orion XS 12/12-50A DC-DC battery charger","document_date":"2026-06","document_edition":"Rev 11 - 06/2026","checked":"2026-09-16","evidence":"manufacturer","quote":"Shutdown voltage (Vshutdown): This level corresponds with the engine being off. ... Default: 13.1V/26.2V (smart alternator) and 13.5V/27V (regular alternator).","clause":"4.5.6. Engine shutdown detection & input voltage lock-out","jurisdiction":null,"hosted_by":"manufacturer","note":null},{"field_group":"value.start_v","url":"https://www.victronenergy.com/upload/documents/Orion_XS_12-12-50A_DC-DC_battery_charger/124067-Orion_XS_DC-DC_battery_charger-pdf-en.pdf","document_title":"Victron Energy, Manual - Orion XS 12/12-50A DC-DC battery charger","document_date":"2026-06","document_edition":"Rev 11 - 06/2026","checked":"2026-09-16","evidence":"manufacturer","quote":"Start voltage (Vstart): At this level, charging starts immediately. Default: 14V/28V.","clause":"4.5.6. Engine shutdown detection & input voltage lock-out","jurisdiction":null,"hosted_by":"manufacturer","note":null}],"checked":"2026-09-16","note":"Measuring voltage at the starter battery terminals is a reading, not a wiring instruction. If the measured voltage moves around or sits below the maker's detection thresholds once warm, the checker says a voltage-sensing relay will not reliably engage.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["victronenergy.com"],"distributor_hosted":false,"evidence_grades":["manufacturer"],"anchor":"#D8-measure"},{"id":"D9-year","checker":"charging_method","statement":"'Every UK vehicle after 2015 has a smart alternator' is REJECTED. The checker never answers from model year. Neither manufacturer document read describes smart alternators by year: Victron describes them by behaviour (variable 12.5V to 15V output) and Sterling by vehicle make and by the presence of a regenerative braking system.","evidence":"unverified","implemented":false,"not_implemented_reason":"No published source found; the checker never answers from model year.","value":null,"jurisdiction":null,"ui_label":"Alternator type is measured or taken from the vehicle maker's statement, never from model year","sources":[{"field_group":"value.model_year_rule","url":"https://www.victronenergy.com/upload/documents/Orion_XS_12-12-50A_DC-DC_battery_charger/124067-Orion_XS_DC-DC_battery_charger-pdf-en.pdf","document_title":"Victron Energy, Manual - Orion XS 12/12-50A DC-DC battery charger","document_date":"2026-06","document_edition":"Rev 11 - 06/2026","checked":"2026-09-16","evidence":"manufacturer","absent":true,"clause":"2.2. Features; 4.1. Engine shutdown detection; 4.3. Setup for Euro 6 vehicles","jurisdiction":null,"hosted_by":"manufacturer","note":"Checked 2026-09-16: the manual never ties smart alternators to a model year; it names emissions standards (Euro 5 or 6) and voltage behaviour."},{"field_group":"value.model_year_rule","url":"https://sterling-power.com/products/alternator-to-battery-chargers-up-to-130a","document_title":"Sterling Power Products, Alternator to Battery Chargers up to 130A (product page)","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","absent":true,"clause":"Product description","jurisdiction":null,"hosted_by":"manufacturer","note":"Checked 2026-09-16: names manufacturers and 'Euro Re Generative braking control systems', not a year."}],"checked":"2026-09-16","note":"Brief rule 12 bans model-year rules. The validator also rejects any vehicle record asserting one.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":[],"distributor_hosted":false,"evidence_grades":[],"anchor":"#D9-year"},{"id":"I1","checker":"index","statement":"NCC Verified Leisure Battery Scheme class definitions: Class A minimum 90 Ah and 350 life cycles at 50% depth of discharge (Motor Homes / Caravans frequently used without electrical hook-ups); Class B 90 Ah / 200 cycles (higher power consumption, for example with a motor mover, but still generally used with electrical hook-up); Class C 60 Ah / 70 cycles (low power consumption used with an electrical hook-up).","evidence":"scheme","implemented":true,"not_implemented_reason":null,"value":{"A":{"min_ah":90,"min_cycles_50pct_dod":350,"intended_use":"Motor Homes / Caravans frequently used without electrical hook-ups"},"B":{"min_ah":90,"min_cycles_50pct_dod":200,"intended_use":"Motor Homes / Caravans with higher power consumption (for example with a motor mover) but still generally used with electrical hook-up"},"C":{"min_ah":60,"min_cycles_50pct_dod":70,"intended_use":"Motor Homes / Caravans with low power consumption used with an electrical hook-up"}},"jurisdiction":"NCC Verified Leisure Battery Scheme, United Kingdom","ui_label":"NCC scheme class (A / B / C) as the scheme defines it","sources":[{"field_group":"value.headers","url":"https://www.thencc.org.uk/consumer-advice/verified-battery-list/","document_title":"NCC, Verified Battery List (consumer advice page with scheme class definitions)","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"scheme","quote":"NCC Testing Class | Intended Purpose | Minimum Capacity (Ah) | Minimum Life Cycles at 50% Depth of Discharge (Cycles)","clause":"Class table column headers","jurisdiction":null,"hosted_by":"scheme","note":null},{"field_group":"value.class_a","url":"https://www.thencc.org.uk/consumer-advice/verified-battery-list/","document_title":"NCC, Verified Battery List (consumer advice page with scheme class definitions)","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"scheme","quote":"A | Motor Homes / Caravans frequently used without electrical hook-ups | 90 | 350","clause":"Class table row A","jurisdiction":null,"hosted_by":"scheme","note":null},{"field_group":"value.class_b","url":"https://www.thencc.org.uk/consumer-advice/verified-battery-list/","document_title":"NCC, Verified Battery List (consumer advice page with scheme class definitions)","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"scheme","quote":"B | Motor Homes / Caravans with higher power consumption (for example with a motor mover) but still generally used with electrical hook-up | 90 | 200","clause":"Class table row B","jurisdiction":null,"hosted_by":"scheme","note":null},{"field_group":"value.class_c","url":"https://www.thencc.org.uk/consumer-advice/verified-battery-list/","document_title":"NCC, Verified Battery List (consumer advice page with scheme class definitions)","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"scheme","quote":"C | Motor Homes / Caravans with low power consumption used with an electrical hook-up | 60 | 70","clause":"Class table row C","jurisdiction":null,"hosted_by":"scheme","note":null},{"field_group":"value","url":"https://www.thencc.org.uk/consumer-advice/verified-battery-list/","document_title":"NCC, Verified Battery List (consumer advice page with scheme class definitions)","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"scheme","quote":"The NCC testing class is intended to provide a starting point and not to be a substitute for expert advice based on the circumstances of an individual consumer.","clause":"Note below the class table","jurisdiction":null,"hosted_by":"scheme","note":null},{"field_group":"value","url":"https://www.thencc.org.uk/consumer-advice/verified-battery-list/","document_title":"NCC, Verified Battery List (consumer advice page with scheme class definitions)","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"scheme","quote":"Note - Lithium batteries are displayed with (Lith) after the name in the reports via the links","clause":"Note below the class table","jurisdiction":null,"hosted_by":"scheme","note":"Confirms the scheme is live and includes lithium entries; the class lists themselves are dated October 2023 and March 2024."}],"checked":"2026-09-16","note":"The consumer page is undated. List version dates: Class A list October 2023 (nine columns); combined list March 2024 (six columns). See I2.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["thencc.org.uk"],"distributor_hosted":false,"evidence_grades":["scheme"],"anchor":"#I1"},{"id":"I2","checker":"index","statement":"The NCC list does not state the discharge rate (C20, C100 or other) that its 'Capacity (Ah)' figure uses, and the March 2024 list no longer publishes capacity or cycle life at all. The index stores ncc.rate_basis_published: false and the site says so; no number is produced from this rule.","evidence":"unverified","implemented":false,"not_implemented_reason":"The scheme does not publish the discharge rate behind its Capacity (Ah) column (October 2023 Class A list) and the March 2024 list drops the column entirely. Must be confirmed with the NCC before any rate is attached to a listed figure.","value":null,"jurisdiction":"NCC Verified Leisure Battery Scheme, United Kingdom","ui_label":"NCC capacity figure: discharge rate not stated by the scheme","sources":[{"field_group":"value.rate_basis","url":"https://www.thencc.org.uk/consumer-advice/verified-battery-list/","document_title":"NCC, Verified Battery List (consumer advice page with scheme class definitions)","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"scheme","absent":true,"clause":"Whole page","jurisdiction":null,"hosted_by":"scheme","note":"Checked 2026-09-16: no statement of discharge rate, C-rate or hour rate anywhere on the consumer page."},{"field_group":"value.columns_2023","url":"https://www.thencc.org.uk/media/bbxfsm2x/class-a-batteries.pdf","document_title":"NCC Verified Leisure Battery Scheme October 2023, Class A","document_date":"2023-10","document_edition":"October 2023","checked":"2026-09-16","evidence":"scheme","quote":"Brand | Brand Model Name | Weight | length | Width | Height | Capacity (Ah) | Life Cycles 50% DoD | Reference","clause":"Table header, heading 'NCC Verified Leisure Battery Scheme October 2023 / Class A'","jurisdiction":null,"hosted_by":"scheme","note":"Nine columns as printed ('length' is lower-case in the PDF). No unit for Weight or dimensions and no discharge rate for Capacity is stated. Footer: 'Note Lith identifies Lithium batteries'. Three trailing Ecobat/Odyssey rows carry a name only. Spec's caveat examples confirmed: Leoch Xtreme XR 1750DC 21.2 kg, 95 Ah, 600 cycles; Exide ET650 26.5 kg, 100 Ah, 360; Ecobat Bison BCT30MF 30 kg, 115 Ah, 2000."},{"field_group":"value.rate_basis","url":"https://www.thencc.org.uk/media/bbxfsm2x/class-a-batteries.pdf","document_title":"NCC Verified Leisure Battery Scheme October 2023, Class A","document_date":"2023-10","document_edition":"October 2023","checked":"2026-09-16","evidence":"scheme","absent":true,"clause":"Whole document","jurisdiction":null,"hosted_by":"scheme","note":"Checked 2026-09-16: no discharge rate stated for the Capacity (Ah) column."},{"field_group":"value.columns_2024","url":"https://www.thencc.org.uk/media/lphmscci/batteries-web-version-march-2024.pdf","document_title":"NCC Verified Leisure Battery Scheme March 2024 (Class A, Class B, Class C)","document_date":"2024-03","document_edition":"March 2024","checked":"2026-09-16","evidence":"scheme","quote":"Brand | Brand Model Name | Weight | length | Width | Height","clause":"Table header, heading 'NCC Verified Leisure Battery Scheme / March 2024 Class A' (same six headers repeated for 'March 2024 Class B' and 'March 2024 Class C')","jurisdiction":null,"hosted_by":"scheme","note":"Six columns: the Capacity (Ah), Life Cycles 50% DoD and Reference columns present in October 2023 are absent. Lithium entries marked '(Lith)' added: Lithium pro Energy Ltd (three models), Clean Energy Living Super-B (three) in Class A; Solar Technology Lifos (two) in Class C."},{"field_group":"value.rate_basis","url":"https://www.thencc.org.uk/media/lphmscci/batteries-web-version-march-2024.pdf","document_title":"NCC Verified Leisure Battery Scheme March 2024 (Class A, Class B, Class C)","document_date":"2024-03","document_edition":"March 2024","checked":"2026-09-16","evidence":"scheme","absent":true,"clause":"Whole document","jurisdiction":null,"hosted_by":"scheme","note":"Checked 2026-09-16: no capacity figure and no discharge rate."}],"checked":"2026-09-16","note":"Version drift confirmed by reading both PDFs on 2026-09-16: the newer list publishes less. Records must carry list_version_date per field.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["thencc.org.uk"],"distributor_hosted":false,"evidence_grades":["scheme"],"anchor":"#I2"},{"id":"I3","checker":"index","statement":"Capacity is stored as an array of rated points, never a scalar, because the headline Ah on a UK leisure battery is frequently not the C20 figure. Banner publishes three capacities per Energy Bull battery: type 957 51 is 75 Ah at 5 h, 100 Ah at 20 h and 110 Ah at 100 h, and is retailed as '100/110Ah'.","evidence":"manufacturer","implemented":true,"not_implemented_reason":null,"value":{"example":{"maker":"Banner","type":"957 51","C5":75,"C20":100,"C100":110}},"jurisdiction":null,"ui_label":"Capacity shown at each rate the maker publishes; headline Ah is often not the 20-hour figure","sources":[{"field_group":"value","url":"https://www.akkumulatorhaz.hu/datasheet/BANNER-Energy-Bull.pdf","document_title":"Banner GmbH, Energy Bull product brochure, Technical data and information","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"Typ / Info / Box / Ah 5 h / Ah 20 h / Ah 100 h: 957 51 4K / H8 / L5 / 75 / 100 / 110","clause":"Technical data and information (Energy Bull table)","jurisdiction":null,"hosted_by":"distributor","note":"Also: 955 51 55/72/85; 959 01 90/115/135; 968 01 180/230/250. Banner-authored (Banner GmbH imprint) but read on a distributor host; flagged for re-sourcing. bannerbatteries.com presented a TLS certificate for banner1.abm.at on 2026-09-16."},{"field_group":"value","url":"https://www.akkumulatorhaz.hu/datasheet/BANNER-Energy-Bull.pdf","document_title":"Banner GmbH, Energy Bull product brochure, Technical data and information","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"While the capacity of starter batteries is given in terms of a 20-hour discharge, the capacity of a leisure battery is also provided on the basis of a 5-hour discharge.","clause":"Banner Tip! sidebar, capacity calculator page","jurisdiction":null,"hosted_by":"distributor","note":null},{"field_group":"value","url":"https://www.bannerbatterien.com/en/Battery-knowledge/51-Hobby-and-leisure-batteries-for-long-term-discharge","document_title":"Banner Batterien, Battery knowledge: Hobby and leisure batteries for long-term discharge","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"If the average power-on time is approx. 5 hours, the K5 is used. If it's approx. 20 hours, the K20 is used and if approx. 100 hours, the K100.","clause":null,"jurisdiction":null,"hosted_by":"manufacturer","note":"Maker's own domain (bannerbatterien.com)."},{"field_group":"value","url":"https://www.victronenergy.com/blog/2015/03/30/batteries-lithium-ion-vs-agm/","document_title":"Victron Energy blog: Batteries: Lithium-ion vs AGM (John Rushworth)","document_date":"2015-03-30","document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"Most Ah ratings of batteries regardless of type are specified at the 20 hour rate.","clause":null,"jurisdiction":null,"hosted_by":"manufacturer","note":null}],"checked":"2026-09-16","note":"Brief rule 6: a maker's single figure with no rate is recorded as rate 'unstated', never assumed C20.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["akkumulatorhaz.hu","bannerbatterien.com","victronenergy.com"],"distributor_hosted":true,"evidence_grades":["manufacturer"],"anchor":"#I3"},{"id":"I4-critique","checker":"index","statement":"A&N Caravan Services publishes a critique of the NCC Verified Leisure Battery Scheme (six cycles of capacity testing; capacity permitted to be no less than 95% of the maker's claim; results not published). The site links and acknowledges it. It is a trade source, graded secondary, and its conclusions are never adopted as fact; listed NCC figures are reported as what the scheme publishes.","evidence":"secondary","implemented":false,"not_implemented_reason":"Secondary source: a trade critique, not the scheme's own document. It is linked and acknowledged on the index page but produces no figure and its conclusions are not asserted by the site. Spec section 1.4 caveat 4.","value":null,"jurisdiction":"United Kingdom (trade commentary on a UK scheme)","ui_label":"Published criticism of the scheme exists (A&N Caravan Services); linked, not adopted","sources":[{"field_group":"value","url":"https://www.aandncaravanservices.co.uk/campaign-for-battery-change.php","document_title":"A&N Caravan Services, Campaign For Clearer Leisure Battery Standard Changes","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"secondary","quote":"Section 6.1.7 in the document states that ONLY 6 CYCLES OF CAPACITY TESTING are necessary to confirm a manufacturers claims of battery capability.","clause":"Page body","jurisdiction":null,"hosted_by":"other","note":"Capitals as printed. The page also quotes the scheme document as requiring capacity 'no less than 95% of that claimed by the manufacturer within the submitted documentation'. Page title: 'Campaign For Clearer Leisure Battery Standard Changes'."}],"checked":"2026-09-16","note":"The critique's factual claims about the scheme rules could only be graded scheme if the NCC's own scheme document were read; it was not available on 2026-09-16.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["aandncaravanservices.co.uk"],"distributor_hosted":false,"evidence_grades":["secondary"],"anchor":"#I4-critique"},{"id":"S1","checker":"battery_size","statement":"A 12 V load's current is its power divided by the system voltage: amps = watts / 12 V. This is Ohm's law (P = V x I), as set out in Victron's Wiring Unlimited section 2.2 'Power', including the worked example I = P/V = 2400/12 = 200A.","evidence":"standard","implemented":true,"not_implemented_reason":null,"value":{"formula":"amps = watts / system_voltage","system_voltage_v":12},"jurisdiction":"physics","ui_label":"Watts / 12 V = amps (Ohm's law)","sources":[{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Wiring-Unlimited-EN.pdf","document_title":"Victron Energy, Wiring Unlimited (Margreet Leeftink)","document_date":"2026-08","document_edition":"rev 04 - 08/2026","checked":"2026-09-16","evidence":"standard","quote":"Power is an expression of how much work an electric current can do. It is measured in Watts, and the symbol is P. It can be calculated using the following formula:","clause":"2.2. Power","jurisdiction":"physics","hosted_by":"manufacturer","note":"The formula itself (P = U x I / P = V x I) is printed as an image immediately after this sentence and is not extractable as text; the worked example below is text."},{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Wiring-Unlimited-EN.pdf","document_title":"Victron Energy, Wiring Unlimited (Margreet Leeftink)","document_date":"2026-08","document_edition":"rev 04 - 08/2026","checked":"2026-09-16","evidence":"standard","quote":"If we have a 12V battery that is connected to a 2400W load. How much current is running through the cable? Answer: V = 12V, P = 2400W, I = P/V = 2400/12 = 200A","clause":"2.2. Power (worked example)","jurisdiction":"physics","hosted_by":"manufacturer","note":"Bullet layout flattened into one line; wording and figures unchanged."}],"checked":"2026-09-16","note":"Graded standard as physics; Wiring Unlimited is the citation for the wording, not the authority for the law. Nominal 12 V is used for the division; the checker does not model voltage sag.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["victronenergy.com"],"distributor_hosted":false,"evidence_grades":["standard"],"anchor":"#S1"},{"id":"S10-solar","checker":"battery_size","statement":"A solar yield estimate in Ah/day is NOT computed. UK yield depends on irradiance data (PVGIS / MCS) the site has not sourced. The checker takes daily solar input as a reader-entered figure and says where an authoritative figure could come from.","evidence":"unverified","implemented":false,"not_implemented_reason":"Requires irradiance data (PVGIS / MCS) not sourced for v1; a '100 W panel = 30 Ah/day' rule of thumb has no published source. Spec section 2.1.4.","value":null,"jurisdiction":null,"ui_label":"Solar input: enter your own daily figure; no yield estimate is published here","sources":[{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Datasheet-12,8-&-25,6-Volt-lithium-iron-phosphate-batteries-Smart-EN.pdf","document_title":"Victron Energy datasheet: 12,8 & 25,6 Volt Lithium-Iron-Phosphate Batteries Smart","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","absent":true,"clause":null,"jurisdiction":null,"hosted_by":"manufacturer","note":"Checked 2026-09-16: no battery or inverter manufacturer document read publishes a UK daily solar yield figure; none would be expected to. An authoritative irradiance source (PVGIS or MCS) was not consulted for this release and no rule of thumb is adopted."}],"checked":"2026-09-16","note":null,"type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":[],"distributor_hosted":false,"evidence_grades":[],"anchor":"#S10-solar"},{"id":"S2","checker":"battery_size","statement":"230 V loads are converted to 12 V battery current by dividing the appliance power by the inverter's published efficiency, and the inverter's published zero-load draw is added for every hour the inverter is switched on. The checker must use the figures for a named inverter model; where the reader names none it uses the Phoenix Inverter 12/375 VE.Direct figures below and says so. Efficiency is published as a maximum ('Max. efficiency'); no efficiency-versus-load curve is published, so the conversion is a best case.","evidence":"manufacturer","implemented":true,"not_implemented_reason":null,"value":{"default_model":"Phoenix Inverter 12/375 VE.Direct","max_efficiency_pct":89,"zero_load_w":5.6,"eco_zero_load_w":0.9,"formula":"battery_ah = (load_w / (efficiency_pct/100) * hours_on_load + zero_load_w * hours_inverter_on) / 12"},"jurisdiction":null,"ui_label":"Inverter efficiency is the maker's published maximum, not an average; zero-load draw added per hour on","sources":[{"field_group":"value.max_efficiency","url":"https://www.victronenergy.com/upload/documents/Datasheet-Phoenix-Inverter-VE.Direct-250VA-800VA-EN.pdf","document_title":"Victron Energy datasheet: Inverters VE.Direct 250VA - 1600VA, 230V and 120V, 50Hz or 60Hz","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"Max. efficiency: 87 / 88 / 88% | 89 / 89 / 90% | 90 / 90 / 91% | 90 / 90 / 91% | 91 / 91 / 92% | 92%","clause":"Specification table, row 'Max. efficiency'; columns 12/250, 12/375, 12/500, 12/800, 12/1200, 12/1600 (each cell 12 V / 24 V / 48 V)","jurisdiction":null,"hosted_by":"manufacturer","note":"Row header is 'Max. efficiency': the figure is a peak, not an average, and no load curve is published in this datasheet. Column alignment confirmed by reading-order text extraction."},{"field_group":"value.zero_load_w","url":"https://www.victronenergy.com/upload/documents/Datasheet-Phoenix-Inverter-VE.Direct-250VA-800VA-EN.pdf","document_title":"Victron Energy datasheet: Inverters VE.Direct 250VA - 1600VA, 230V and 120V, 50Hz or 60Hz","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"Zero-load power: 4,2 / 5,2 / 7,9W | 5,6 / 6,1 / 8,5W | 6 / 6,5 / 9W | 6,5 / 7 / 9,5W | 10 / 11 / 12W | 12W","clause":"Specification table, row 'Zero-load power'; same columns","jurisdiction":null,"hosted_by":"manufacturer","note":"A separate row 'Default zero-load power in ECO mode (default retry interval: 2,5 s, adjustable)' gives 0,8 / 1,3 / 2,5W for 12/250 and 0,9 / 1,4 / 2,6W for 12/375; the checker uses the non-ECO figure unless the reader says ECO mode is on."}],"checked":"2026-09-16","note":"The datasheet URL is named '250VA-800VA' but the document read covers 250VA to 1600VA. Where a charger/inverter record publishes its own figures the checker uses those and names the model.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["victronenergy.com"],"distributor_hosted":false,"evidence_grades":["manufacturer"],"anchor":"#S2"},{"id":"S3","checker":"battery_size","statement":"Where an appliance maker publishes no duty cycle (compressor running-time share) the checker says so and treats the published figure as what it is: a rated current is an upper bound, a 24-hour average is an average under the maker's stated test condition. The checker never assumes a duty cycle. Assuming one is a site policy of refusal, not a standard.","evidence":"convention","implemented":true,"not_implemented_reason":null,"value":null,"jurisdiction":"Site policy","ui_label":"No duty cycle published for this appliance: shown as the maker's figure, not adjusted. Assuming a duty cycle is a convention, not a standard","sources":[{"field_group":"value","url":"https://www.thetford.com/app/uploads/2025/10/7.1_Thetford_12V-Refrigerators_2026_EN_LR.pdf","document_title":"Thetford, 12V Compressor refrigerators (2026 range product sheet)","document_date":"2025-07","document_edition":"072025","checked":"2026-09-16","evidence":"manufacturer","quote":"Energy Consumption ** (kWh/24h) 0.32 | Average Ampere Usage** (Ah/24h) 25.6 | ** According IEC62552-2020 part 3.","clause":"T1090-E specification column and footnote **","jurisdiction":null,"hosted_by":"manufacturer","note":"Thetford is the one maker in the survey that names the test standard behind its 24-hour consumption figure. Figures for T2095-E, T2120-C and T2138-C carry the same footnote."},{"field_group":"value","url":"https://media.dometic.com/externalassets/dometic-coolmatic-crx-50-e_9600028416_75862.pdf","document_title":"Dometic CRX (CRX50, CRX65, CRX80, CRX110, CRX 140) Compressor refrigerator Installation and Operating Manual","document_date":null,"document_edition":"(c) 2020 Dometic Group","checked":"2026-09-16","evidence":"manufacturer","quote":"Power consumption: 40 W | Rated current 12 Vg: 5.0 A","clause":"13 Technical data, CRX 50 column","jurisdiction":null,"hosted_by":"manufacturer","note":"The manual publishes a rated current and a power consumption for the CRX 50 and no duty cycle, running-time percentage, 24-hour average or test standard. Two-column table flattened to one line; figures unchanged."},{"field_group":"duty_cycle","url":"https://media.dometic.com/externalassets/dometic-coolmatic-crx-50-e_9600028416_75862.pdf","document_title":"Dometic CRX (CRX50, CRX65, CRX80, CRX110, CRX 140) Compressor refrigerator Installation and Operating Manual","document_date":null,"document_edition":"(c) 2020 Dometic Group","checked":"2026-09-16","evidence":"manufacturer","absent":true,"clause":"13 Technical data","jurisdiction":null,"hosted_by":"manufacturer","note":"Checked 2026-09-16: no duty cycle, running-time share or energy-consumption test standard is stated anywhere in the EN section of the manual."}],"checked":"2026-09-16","note":"Spec section 2.1.6 calls this the largest error source in the calculator. The Dometic CRX manual was read on media.dometic.com (manufacturer host), not the distributor copy the spec cites.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["thetford.com","media.dometic.com"],"distributor_hosted":false,"evidence_grades":["manufacturer"],"anchor":"#S3"},{"id":"S4a","checker":"battery_size","statement":"Effective capacity of a lead-acid battery falls as discharge current rises. Victron publishes this as a table of effective capacity against discharge time for its AGM and Gel Deep Cycle batteries, with the rated capacity referring to the 20-hour discharge (0,05 C). The checker applies a record's own table where one is published; this Victron table is the labelled fallback for AGM and Gel.","evidence":"manufacturer","implemented":true,"not_implemented_reason":null,"value":{"rated_at":"C20","rated_current_c":0.05,"agm_deep_cycle_pct":{"20h":100,"10h":92,"5h":85,"3h":78,"1h":65,"30min":55,"15min":42,"10min":38,"5min":27},"gel_deep_cycle_pct":{"20h":100,"10h":87,"5h":80,"3h":73,"1h":61,"30min":51,"15min":38,"10min":34,"5min":24}},"jurisdiction":null,"ui_label":"Effective capacity vs discharge time: Victron AGM/Gel Deep Cycle Table 1 (fallback where the battery's own table is not published)","sources":[{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Datasheet-GEL-and-AGM-Batteries-EN.pdf","document_title":"Victron Energy datasheet: Gel and AGM Batteries","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"The rated capacity of Victron AGM and Gel Deep Cycle batteries refers to 20 hour discharge, in other words: a discharge current of 0,05 C.","clause":"6. Battery Discharging Characteristics","jurisdiction":null,"hosted_by":"manufacturer","note":"Spec quotes this as section 6; confirmed."},{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Datasheet-GEL-and-AGM-Batteries-EN.pdf","document_title":"Victron Energy datasheet: Gel and AGM Batteries","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"The effective capacity decreases with increasing discharge current (see table 1). Please note that the capacity reduction will be even faster in case of a constant power load, such as an inverter.","clause":"6. Battery Discharging Characteristics","jurisdiction":null,"hosted_by":"manufacturer","note":null},{"field_group":"value.table","url":"https://www.victronenergy.com/upload/documents/Datasheet-GEL-and-AGM-Batteries-EN.pdf","document_title":"Victron Energy datasheet: Gel and AGM Batteries","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"Discharge time (constant current) / End Voltage V / AGM 'Deep Cycle' % / Gel 'Deep Cycle' %: 20 hours 10,8 100 100 | 10 hours 10,8 92 87 | 5 hours 10,8 85 80 | 3 hours 10,8 78 73 | 1 hour 9,6 65 61 | 30 min. 9,6 55 51 | 15 min. 9,6 42 38 | 10 min. 9,6 38 34 | 5 min. 9,6 27 24 | 5 seconds 8C 7C","clause":"Table 1: Effective capacity as a function of discharge time (the lowest row gives the maximum allowable 5 seconds discharge current)","jurisdiction":null,"hosted_by":"manufacturer","note":"Header 'Discharg time' is misspelt in the PDF; corrected here. End-voltage column values read from layout extraction."}],"checked":"2026-09-16","note":"Applies to Victron AGM and Gel Deep Cycle. For any other lead-acid record the checker shows this table as a named fallback and says the battery's own figures are not published. The datasheet prints no document date or revision.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["victronenergy.com"],"distributor_hosted":false,"evidence_grades":["manufacturer"],"anchor":"#S4a"},{"id":"S4b","checker":"battery_size","statement":"Peukert's equation Cp = I^n x t relates capacity to discharge current. The exponent n can be derived from two published capacity ratings at different discharge times (typically the 20h and 5h ratings). Where a battery record has two or more rated points the checker derives n from them.","evidence":"manufacturer","implemented":true,"not_implemented_reason":null,"value":{"formula":"Cp = I^n * t","n_from":"two published rated points, e.g. C20 and C5"},"jurisdiction":null,"ui_label":"Peukert exponent derived from this battery's two published ratings (Victron BMV-712 method)","sources":[{"field_group":"value","url":"https://www.victronenergy.com/media/pg/BMV-712_Smart/en/battery-capacity-and-peukert-exponent.html","document_title":"Victron Energy, BMV-712 Smart manual, 8. Battery capacity and Peukert exponent","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"Peukert's equation is stated below: Cp = In x t","clause":"8. Battery capacity and Peukert exponent","jurisdiction":null,"hosted_by":"manufacturer","note":"The n is a superscript in the source (I to the power n); the formula for n itself is rendered as an image on the page."},{"field_group":"value","url":"https://www.victronenergy.com/media/pg/BMV-712_Smart/en/battery-capacity-and-peukert-exponent.html","document_title":"Victron Energy, BMV-712 Smart manual, 8. Battery capacity and Peukert exponent","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"To calculate the Peukert exponent you will need two rated battery capacities. This is usually the 20h discharge rate and the 5h rate, but can also be the 10h and 5h, or the 20h and the 10h rate.","clause":"8. Battery capacity and Peukert exponent","jurisdiction":null,"hosted_by":"manufacturer","note":null}],"checked":"2026-09-16","note":"Spec cites 'BMV-712 Smart manual section 8'; confirmed.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["victronenergy.com"],"distributor_hosted":false,"evidence_grades":["manufacturer"],"anchor":"#S4b"},{"id":"S4c","checker":"battery_size","statement":"Where a lead-acid battery publishes only one capacity rating the checker uses Victron's default Peukert exponent of 1.25 and labels it as the manufacturer's approximate default for 'most lead acid batteries', never as this battery's figure. Victron's own caveat that the exponent is 'no more than a rough approximation of reality' is carried with it.","evidence":"manufacturer","implemented":true,"not_implemented_reason":null,"value":1.25,"jurisdiction":null,"ui_label":"Peukert n = 1.25: the manufacturer's approximate default for most lead-acid batteries, not this battery's figure","sources":[{"field_group":"value","url":"https://www.victronenergy.com/media/pg/BMV-712_Smart/en/battery-capacity-and-peukert-exponent.html","document_title":"Victron Energy, BMV-712 Smart manual, 8. Battery capacity and Peukert exponent","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"The default setting in the battery monitor for the Peukert exponent is 1.25. This is an acceptable average value for most lead acid batteries.","clause":"8. Battery capacity and Peukert exponent","jurisdiction":null,"hosted_by":"manufacturer","note":null},{"field_group":"value","url":"https://www.victronenergy.com/media/pg/BMV-712_Smart/en/battery-capacity-and-peukert-exponent.html","document_title":"Victron Energy, BMV-712 Smart manual, 8. Battery capacity and Peukert exponent","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"Please note that the Peukert exponent is no more than a rough approximation of reality. In case of very high currents, the battery will give even less capacity than predicted by a fixed exponent.","clause":"8. Battery capacity and Peukert exponent","jurisdiction":null,"hosted_by":"manufacturer","note":"Spec quoted this from 'the Peukert exponent...'; the sentence begins 'Please note that'."},{"field_group":"value","url":"https://www.victronenergy.com/media/pg/BMV-712_Smart/en/all-features-and-settings.html","document_title":"Victron Energy, BMV-712 Smart manual, 7.2.6. Peukert exponent","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"Set the Peukert exponent parameter according to the battery specification sheet. If the Peukert exponent is unknown, set it at 1.25 for lead-acid batteries and set it at 1.05 for lithium batteries. A value of 1.00 disables the Peukert compensation.","clause":"7.2.6. Peukert exponent (setting 05; default 1.25, range 1.00 - 1.50, step 0.01)","jurisdiction":null,"hosted_by":"manufacturer","note":null}],"checked":"2026-09-16","note":"Only used when S4b cannot run (fewer than two published rated points). The output must name the default and Victron's caveat.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["victronenergy.com"],"distributor_hosted":false,"evidence_grades":["manufacturer"],"anchor":"#S4c"},{"id":"S4d","checker":"battery_size","statement":"For lithium (LiFePO4) batteries Victron's guidance is a Peukert exponent of 1.05 unless the battery supplier advises otherwise, i.e. effectively no rate derating at leisure discharge rates.","evidence":"manufacturer","implemented":true,"not_implemented_reason":null,"value":1.05,"jurisdiction":null,"ui_label":"Peukert n = 1.05 for lithium: Victron's default unless the battery supplier advises otherwise","sources":[{"field_group":"value","url":"https://www.victronenergy.com/media/pg/BMV-712_Smart/en/configuration.html","document_title":"Victron Energy, BMV-712 Smart manual, 4.6. Make Lithium settings (if needed)","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"Set the Peukert exponent at 1.05, unless the battery supplier advises otherwise.","clause":"4.6. Make Lithium settings (if needed)","jurisdiction":null,"hosted_by":"manufacturer","note":"Spec attributes this sentence to section 8 (battery-capacity-and-peukert-exponent.html); it is in section 4.6 of the configuration page. Section 8 contains no 1.05."},{"field_group":"value","url":"https://www.victronenergy.com/media/pg/BMV-712_Smart/en/all-features-and-settings.html","document_title":"Victron Energy, BMV-712 Smart manual, 7.2.6. Peukert exponent","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"If the Peukert exponent is unknown, set it at 1.25 for lead-acid batteries and set it at 1.05 for lithium batteries.","clause":"7.2.6. Peukert exponent","jurisdiction":null,"hosted_by":"manufacturer","note":null}],"checked":"2026-09-16","note":"Where a LiFePO4 record publishes its own rate behaviour the checker uses that instead.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["victronenergy.com"],"distributor_hosted":false,"evidence_grades":["manufacturer"],"anchor":"#S4d"},{"id":"S5-la","checker":"battery_size","statement":"Lead-acid usable capacity = nameplate x 50% depth of discharge. The 50% figure is the depth of discharge the NCC Verified Leisure Battery Scheme uses to rate every class of leisure battery, and Victron describes it as 'generally accepted'. It is an industry convention with a UK scheme's test basis behind it, not a standard.","evidence":"convention","implemented":true,"not_implemented_reason":null,"value":0.5,"jurisdiction":"UK scheme test basis (NCC) plus one manufacturer's stated convention (Victron)","ui_label":"50% depth of discharge: NCC scheme test basis and a manufacturer convention, not a standard","sources":[{"field_group":"value","url":"https://www.thencc.org.uk/consumer-advice/verified-battery-list/","document_title":"NCC, Verified Battery List (consumer advice page with scheme class definitions)","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"scheme","quote":"Minimum Life Cycles at 50% Depth of Discharge (Cycles)","clause":"Class table column header","jurisdiction":null,"hosted_by":"scheme","note":"Every class (A, B, C) is defined by a minimum number of life cycles at 50% depth of discharge. The earlier quote 'Life Cycles 50% DoD' is the column header of the October 2023 Class A PDF, not of this web page; corrected 2026-09-16."},{"field_group":"value","url":"https://www.thencc.org.uk/consumer-advice/verified-battery-list/","document_title":"NCC, Verified Battery List (consumer advice page with scheme class definitions)","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"scheme","quote":"NCC Verified leisure batteries are tested by the manufacturer and verified by the NCC taking into account their minimum capacity minimum and their minimum life cycles at 50% depth of discharge, into 1 of 3 classes.","clause":"Introductory paragraph","jurisdiction":null,"hosted_by":"scheme","note":"'minimum capacity minimum' is as printed on the page."},{"field_group":"value","url":"https://www.thencc.org.uk/media/bbxfsm2x/class-a-batteries.pdf","document_title":"NCC Verified Leisure Battery Scheme October 2023, Class A","document_date":"2023-10","document_edition":"October 2023","checked":"2026-09-16","evidence":"scheme","quote":"Life Cycles 50% DoD","clause":"Column header, NCC Verified Leisure Battery Scheme October 2023, Class A","jurisdiction":null,"hosted_by":"scheme","note":null},{"field_group":"value","url":"https://www.victronenergy.com/blog/2015/03/30/batteries-lithium-ion-vs-agm/","document_title":"Victron Energy blog: Batteries: Lithium-ion vs AGM (John Rushworth)","document_date":"2015-03-30","document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"It is generally accepted that the most economic and practical depth of discharge (DOD) for an AGM battery is 50%.","clause":null,"jurisdiction":null,"hosted_by":"manufacturer","note":"Victron's own words 'generally accepted' describe a convention, not a standard."}],"checked":"2026-09-16","note":"Where a battery record publishes its own DoD guidance, the checker shows the record's figure alongside this default and names both.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["thencc.org.uk","victronenergy.com"],"distributor_hosted":false,"evidence_grades":["scheme","manufacturer"],"anchor":"#S5-la"},{"id":"S5-li","checker":"battery_size","statement":"LiFePO4 usable capacity = nameplate x 80% depth of discharge as the economic working figure. Victron states 80% DOD is used for LFP, and its LFP Smart datasheet publishes cycle life at 80%, 70% and 50% DoD (2500 / 3000 / 5000 cycles to 80% of nominal capacity). Deeper discharge is survivable but costs cycles.","evidence":"manufacturer","implemented":true,"not_implemented_reason":null,"value":0.8,"jurisdiction":null,"ui_label":"80% depth of discharge: Victron's working figure for LiFePO4; 2500 cycles @80%, 3000 @70%, 5000 @50% (LFP Smart datasheet)","sources":[{"field_group":"value","url":"https://www.victronenergy.com/blog/2015/03/30/batteries-lithium-ion-vs-agm/","document_title":"Victron Energy blog: Batteries: Lithium-ion vs AGM (John Rushworth)","document_date":"2015-03-30","document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"For Lithium-iron-phosphate (LiFePO4 or LFP) which is the safest of the mainstream Li-ion battery types, 80% DOD is used.","clause":null,"jurisdiction":null,"hosted_by":"manufacturer","note":null},{"field_group":"value.cycle_life","url":"https://www.victronenergy.com/upload/documents/Datasheet-12,8-&-25,6-Volt-lithium-iron-phosphate-batteries-Smart-EN.pdf","document_title":"Victron Energy datasheet: 12,8 & 25,6 Volt Lithium-Iron-Phosphate Batteries Smart","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"CYCLE LIFE (capacity ≥ 80 % of nominal): 80 % DoD 2500 cycles | 70 % DoD 3000 cycles | 50 % DoD 5000 cycles","clause":"Battery specification table, CYCLE LIFE rows","jurisdiction":null,"hosted_by":"manufacturer","note":"Row labels and values confirmed from two independent text extractions; the ≥ glyph confirmed present in the PDF text."},{"field_group":"value.cycle_life","url":"https://www.victronenergy.com/upload/documents/Datasheet-12,8-&-25,6-Volt-lithium-iron-phosphate-batteries-Smart-EN.pdf","document_title":"Victron Energy datasheet: 12,8 & 25,6 Volt Lithium-Iron-Phosphate Batteries Smart","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"Capacity loss (per 100 cycles, @ 25 °C, 100 % DoD): \u003c1 %","clause":"Battery specification table, VOLTAGE AND CAPACITY rows","jurisdiction":null,"hosted_by":"manufacturer","note":"Shows 100% DoD is survivable; the same row format is given for Energy loss."}],"checked":"2026-09-16","note":"Where a LiFePO4 record publishes its own DoD guidance the checker shows the record's figure alongside and names both. The datasheet prints no document date.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["victronenergy.com"],"distributor_hosted":false,"evidence_grades":["manufacturer"],"anchor":"#S5-li"},{"id":"S6a","checker":"battery_size","statement":"Battery capacity varies with temperature. Where the battery's maker publishes capacity at stated temperatures the checker uses those figures and names the temperature. Victron's LFP Smart datasheet publishes nominal capacity at +25 °C, 0 °C and -20 °C for every model.","evidence":"manufacturer","implemented":true,"not_implemented_reason":null,"value":{"example_model":"LFP Smart 12,8/100","ah_at_c":{"0":80,"25":100,"-20":50}},"jurisdiction":null,"ui_label":"Capacity at the maker's published temperatures (this battery's own figures)","sources":[{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Datasheet-12,8-&-25,6-Volt-lithium-iron-phosphate-batteries-Smart-EN.pdf","document_title":"Victron Energy datasheet: 12,8 & 25,6 Volt Lithium-Iron-Phosphate Batteries Smart","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"Nominal capacity @ 25 °C* / Nominal capacity @ 0 °C* / Nominal capacity @ -20 °C*: LFPSmart 12,8/100: 100 Ah / 80 Ah / 50 Ah","clause":"Battery specification table, VOLTAGE AND CAPACITY rows","jurisdiction":null,"hosted_by":"manufacturer","note":"Other models: 12,8/50 50/40/25 Ah; 12,8/160 160/130/80 Ah; 12,8/200 200/160/100 Ah; 12,8/330 330/260/160 Ah. The asterisk footnote in the same block reads 'Discharge current 1C'."}],"checked":"2026-09-16","note":"The checker never interpolates between published points or extends beyond them; it shows the nearest published temperature and names it.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["victronenergy.com"],"distributor_hosted":false,"evidence_grades":["manufacturer"],"anchor":"#S6a"},{"id":"S6b","checker":"battery_size","statement":"A numeric temperature derate for lead-acid capacity is NOT applied. Both manufacturer documents checked publish the effect only as a graph: Victron's Gel/AGM datasheet states capacity 'reduces sharply at low temperatures' and shows Fig. 1; GS Yuasa's NP application manual presents Figure 7 with no table. Reading a number off a graph would breach brief rule 8. The checker reports the direction of the effect and says the figures are not published numerically.","evidence":"unverified","implemented":false,"not_implemented_reason":"No manufacturer publishes a numeric lead-acid temperature derate table in the documents read on 2026-09-16 (Victron Gel/AGM datasheet section 8 and GS Yuasa NP Application Manual Figure 7 are graphs only). Brief rule 8: never read a number off a graph.","value":null,"jurisdiction":null,"ui_label":"Lead-acid capacity falls in the cold; the makers publish this only as a graph, so no number is applied","sources":[{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Datasheet-GEL-and-AGM-Batteries-EN.pdf","document_title":"Victron Energy datasheet: Gel and AGM Batteries","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"As is shown by the graph below, capacity reduces sharply at low temperatures.","clause":"8. Effect of temperature on capacity; Fig. 1: Effect of temperature on capacity","jurisdiction":null,"hosted_by":"manufacturer","note":"Graph only; no table of capacity percentage versus temperature is printed."},{"field_group":"value","url":"https://gsyuasa-es.com/Downloads/NP_Application_manual.pdf","document_title":"GS Yuasa, NP series sealed rechargeable lead-acid battery Application Manual","document_date":"2000-05","document_edition":"Rev. - 5/00","checked":"2026-09-16","evidence":"manufacturer","quote":"At higher temperatures, the electrical capacity that can be taken out of a battery increases. At lower temperatures, the electrical capacity that can be taken out of a battery decreases. Figure 7 shows the temperature effects in relation to battery capacity.","clause":"Temperature characteristics; Figure 7. TEMPERATURE EFFECTS IN RELATION TO BATTERY CAPACITY","jurisdiction":null,"hosted_by":"manufacturer","note":"Graph only; no numeric table. gsyuasa-es.com is GS Yuasa Energy Solutions, a maker's domain."},{"field_group":"value.numeric_table","url":"https://www.victronenergy.com/upload/documents/Datasheet-GEL-and-AGM-Batteries-EN.pdf","document_title":"Victron Energy datasheet: Gel and AGM Batteries","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","absent":true,"clause":"8. Effect of temperature on capacity","jurisdiction":null,"hosted_by":"manufacturer","note":"Checked 2026-09-16: no numeric capacity-versus-temperature table for lead-acid in this datasheet."}],"checked":"2026-09-16","note":"If a lead-acid record ever publishes a numeric table, that record's figures may be used under S6a.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["victronenergy.com","gsyuasa-es.com"],"distributor_hosted":false,"evidence_grades":["manufacturer"],"anchor":"#S6b"},{"id":"S6c","checker":"battery_size","statement":"A LiFePO4 battery must not be charged below its published minimum charge temperature. Victron's LFP Smart batteries publish Charge: +5 °C to +50 °C and Discharge: -20 °C to +50 °C. The checker shows the record's own published window and flags cold-weather charging where it is below the minimum.","evidence":"manufacturer","implemented":true,"not_implemented_reason":null,"value":{"example_model":"LFP Smart range","charge_min_c":5,"charge_max_c":50,"discharge_min_c":-20,"discharge_max_c":50},"jurisdiction":null,"ui_label":"Charge temperature window as published by this battery's maker","sources":[{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Datasheet-12,8-&-25,6-Volt-lithium-iron-phosphate-batteries-Smart-EN.pdf","document_title":"Victron Energy datasheet: 12,8 & 25,6 Volt Lithium-Iron-Phosphate Batteries Smart","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"Operating temperature: Discharge: -20 °C to +50 °C Charge: +5 °C to +50 °C","clause":"Battery specification table, OPERATING CONDITIONS, Operating temperature row","jurisdiction":null,"hosted_by":"manufacturer","note":null}],"checked":"2026-09-16","note":"Safety-relevant: a LiFePO4 record without a published charge_temp_min_c must list the gap (validator rule).","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["victronenergy.com"],"distributor_hosted":false,"evidence_grades":["manufacturer"],"anchor":"#S6c"},{"id":"S7","checker":"battery_size","statement":"A lead-acid battery fails prematurely through sulfation if it is habitually left partially charged or operated in deficit for long periods. The checker uses this to explain why lead-acid banks that are rarely fully recharged should be sized and charged conservatively; it is a stated manufacturer position, not a number.","evidence":"manufacturer","implemented":true,"not_implemented_reason":null,"value":null,"jurisdiction":null,"ui_label":"Lead-acid left partially charged fails early through sulfation (Victron)","sources":[{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Datasheet-12,8-&-25,6-Volt-lithium-iron-phosphate-batteries-Smart-EN.pdf","document_title":"Victron Energy datasheet: 12,8 & 25,6 Volt Lithium-Iron-Phosphate Batteries Smart","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"A lead-acid battery will fail prematurely due to sulfation: If it operates in deficit mode during long periods of time (i.e. if the battery is rarely, or never at all, fully charged). If it is left partially charged or worse, fully discharged (yacht or mobile home during wintertime).","clause":"Why lithium-iron-phosphate? / Rugged","jurisdiction":null,"hosted_by":"manufacturer","note":"Two bullet points flattened into one line; wording unchanged."},{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Datasheet-12,8-&-25,6-Volt-lithium-iron-phosphate-batteries-Smart-EN.pdf","document_title":"Victron Energy datasheet: 12,8 & 25,6 Volt Lithium-Iron-Phosphate Batteries Smart","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"A LFP battery: Does not need to be fully charged. Service life even slightly improves in case of partial charge instead of a full charge. This is a major advantage of LFP compared to lead-acid.","clause":"Why lithium-iron-phosphate? / Rugged","jurisdiction":null,"hosted_by":"manufacturer","note":null}],"checked":"2026-09-16","note":"Statement comes from a lithium battery datasheet comparing chemistries; it is Victron's first-party position and is labelled as such.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["victronenergy.com"],"distributor_hosted":false,"evidence_grades":["manufacturer"],"anchor":"#S7"},{"id":"S8","checker":"battery_size","statement":"The answer is expressed as required nameplate Ah at a named C-rate, never as a bare Ah figure. Victron states most Ah ratings are specified at the 20 hour rate; Banner publishes three capacities (5 h / 20 h / 100 h) for each Energy Bull battery and notes that leisure battery capacity is also provided on the basis of a 5-hour discharge. A bare number is therefore ambiguous.","evidence":"manufacturer","implemented":true,"not_implemented_reason":null,"value":{"output_rate_default":"C20","also_show":["C5","C100"]},"jurisdiction":null,"ui_label":"Required Ah stated at a named rate (C20 unless the battery record publishes a different headline rate)","sources":[{"field_group":"value","url":"https://www.victronenergy.com/blog/2015/03/30/batteries-lithium-ion-vs-agm/","document_title":"Victron Energy blog: Batteries: Lithium-ion vs AGM (John Rushworth)","document_date":"2015-03-30","document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"Most Ah ratings of batteries regardless of type are specified at the 20 hour rate.","clause":null,"jurisdiction":null,"hosted_by":"manufacturer","note":null},{"field_group":"value","url":"https://www.akkumulatorhaz.hu/datasheet/BANNER-Energy-Bull.pdf","document_title":"Banner GmbH, Energy Bull product brochure, Technical data and information","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"Typ / Info / Box / Ah 5 h / Ah 20 h / Ah 100 h: 957 51 4K / H8 / L5 / 75 / 100 / 110","clause":"Technical data and information (Energy Bull table)","jurisdiction":null,"hosted_by":"distributor","note":"Banner-authored brochure (Banner GmbH imprint, Linz) read from a distributor server; bannerbatteries.com presented a TLS certificate for banner1.abm.at on 2026-09-16 and could not be read; no Energy Bull brochure link was found on bannerbatterien.com. Flagged for re-sourcing."},{"field_group":"value","url":"https://www.akkumulatorhaz.hu/datasheet/BANNER-Energy-Bull.pdf","document_title":"Banner GmbH, Energy Bull product brochure, Technical data and information","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"While the capacity of starter batteries is given in terms of a 20-hour discharge, the capacity of a leisure battery is also provided on the basis of a 5-hour discharge. For example, in five hours a 75Ah battery can lose 15A in discharge current.","clause":"Banner Tip! sidebar, capacity calculator page","jurisdiction":null,"hosted_by":"distributor","note":null},{"field_group":"value","url":"https://www.bannerbatterien.com/en/Battery-knowledge/51-Hobby-and-leisure-batteries-for-long-term-discharge","document_title":"Banner Batterien, Battery knowledge: Hobby and leisure batteries for long-term discharge","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"If the average power-on time is approx. 5 hours, the K5 is used. If it's approx. 20 hours, the K20 is used and if approx. 100 hours, the K100.","clause":null,"jurisdiction":null,"hosted_by":"manufacturer","note":"Maker's own domain; confirms Banner publishes and uses three rates (K5, K20, K100). Same page: 'Required battery: Energy Bull 96801 K5 = 180 Ah'."}],"checked":"2026-09-16","note":"Derived from spec section 1.1. The checker shows the required Ah at C20 and, where the battery record publishes other rated points, at those too.","type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["victronenergy.com","akkumulatorhaz.hu","bannerbatterien.com"],"distributor_hosted":true,"evidence_grades":["manufacturer"],"anchor":"#S8"},{"id":"S9-margin","checker":"battery_size","statement":"A blanket '+20% for battery ageing' design margin is NOT applied. No manufacturer document read publishes a design-margin figure; the 20% is a convention. If offered at all it is a reader-adjustable margin defaulting to 0 and labelled as the reader's own figure.","evidence":"unverified","implemented":false,"not_implemented_reason":"No published manufacturer figure for a design or ageing margin was found on 2026-09-16; the widely repeated 20% is a convention, and Banner's own calculator uses a 1,7 factor instead. Spec section 2.1.4.","value":null,"jurisdiction":null,"ui_label":"Ageing margin: no published figure; enter your own (default 0)","sources":[{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Datasheet-GEL-and-AGM-Batteries-EN.pdf","document_title":"Victron Energy datasheet: Gel and AGM Batteries","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","absent":true,"clause":null,"jurisdiction":null,"hosted_by":"manufacturer","note":"Checked 2026-09-16: the Victron Gel and AGM datasheet publishes service life versus temperature (Table 2) and cycle life versus DoD (section 9) but no sizing or ageing design margin."},{"field_group":"value","url":"https://www.victronenergy.com/upload/documents/Datasheet-12,8-&-25,6-Volt-lithium-iron-phosphate-batteries-Smart-EN.pdf","document_title":"Victron Energy datasheet: 12,8 & 25,6 Volt Lithium-Iron-Phosphate Batteries Smart","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","absent":true,"clause":null,"jurisdiction":null,"hosted_by":"manufacturer","note":"Checked 2026-09-16: the Victron LFP Smart datasheet publishes cycle life to 80% of nominal capacity but no sizing or ageing design margin."},{"field_group":"value","url":"https://www.akkumulatorhaz.hu/datasheet/BANNER-Energy-Bull.pdf","document_title":"Banner GmbH, Energy Bull product brochure, Technical data and information","document_date":null,"document_edition":null,"checked":"2026-09-16","evidence":"manufacturer","quote":"As a rule, 70% should be taken as a safety factor.","clause":"Energy Bull capacity calculator page: 'Watt : Volt = Ampere x Hours x Safety factor = Battery capacity in Ah ... 650 : 24 = 27 x 5 x 1,7 = 230Ah (K20)'","jurisdiction":null,"hosted_by":"distributor","note":"Banner's own calculator uses a 1,7 safety factor, which is a different figure from the repeated 20% and is Banner's convention for its own sizing tool, not a published ageing figure. Recorded to show that makers disagree; not adopted."}],"checked":"2026-09-16","note":null,"type":"rules","first_checked":"2026-09-16","last_checked":"2026-09-16","age_days":1,"stale":false,"unverified":false,"freshness":"verified","freshness_label":"verified 16 September 2026","absences":[],"absence_by_gap":{},"source_hosts":["akkumulatorhaz.hu"],"distributor_hosted":true,"evidence_grades":["manufacturer"],"anchor":"#S9-margin"}]}