Leisure Power Check

Leisure battery chargers, by the charging profile the maker publishes

Compare 16 mains chargers by their published charge profiles, voltages and sources. A missing profile is an evidence gap, not a claim that a charger cannot be used with that chemistry.

Read the four onboard charger evidence cards, including battery-pairing statements, document differences and vehicle evidence.

9 publish a LiFePO4 profile

5 carry the absence line

9 select the profile by hand

The chargers

ChargerOutputStagesFlooded profileEFB profileAGM profileGel profileLiFePO4 profileSelectionTemperature compensationPrice bandWhere soldSource
CTEK CS ONE (Gen 2)
Latest source check 4 November 2026 · IP65
ctek.com
8 A No published stage count found (checked 4 November 2026). Published
12 V: WET, MF, Ca/Ca, AGM, EFB, GEL, LiFePO4 (APTO adaptive; no voltage published)
Published
12 V: WET, MF, Ca/Ca, AGM, EFB, GEL, LiFePO4
Published
12 V: WET, MF, Ca/Ca, AGM, EFB, GEL, LiFePO4
Published
12 V: WET, MF, Ca/Ca, AGM, EFB, GEL, LiFePO4
Published
APTO technology automatically adapts charging to any 12V battery, including lithium* — *) 12V lithium batteries (LiFePO4, Li-Fe, Li-iron, LFP)
Selected automatically Yes (built in) £199.90 to £199.90
seen 4 November 2026
  • CTEK UK shop £199.90 checked 4 November 2026 Could not be established
CTEK CS ONE (GEN 2) product sheet (UK-EN), Technical data, Manufacturer document, checked 4 November 2026
CTEK LITHIUM XS
Latest source check 4 November 2026 · IP65
ctek.com
5 A 8 step, fully automatic charging cycle No published charge profile found (checked 4 November 2026). No published charge profile found (checked 4 November 2026). No published charge profile found (checked 4 November 2026). No published charge profile found (checked 4 November 2026). Published
Charging voltage 13.8/14.4 VDC; Battery types 12V LiFePO4 batteries; ABSORPTION Declining current 13.8V; MAXIMIZATION Max 14.4V; FLOAT 13.6V
abs. 13.8 V · float 13.6 V
Fixed profile No published temperature compensation statement found (checked 4 November 2026). £109.90 to £109.90
seen 4 November 2026
  • CTEK UK shop £109.90 checked 4 November 2026 Could not be established
CTEK LITHIUM XS Manual (UK-EN), Technical specifications, Manufacturer document, checked 4 November 2026
CTEK MXS 10
Latest source check 4 November 2026 · IP65
ctek.com
10 A Fully automatic 'connect and forget' 8 step charging Published
Charging voltage 14.4/14.7/15.8/13.6 V; Battery types 12 V: WET, MF, Ca/Ca, AGM, GEL. The product page does not label which voltage belongs to which program.
No published charge profile found (checked 4 November 2026). Published
12 V: WET, MF, Ca/Ca, AGM, GEL; 'an AGM option'
Published
12 V: WET, MF, Ca/Ca, AGM, GEL
No published lithium charge profile found (checked 4 November 2026). Selected manually Yes £179.90 to £179.90
seen 4 November 2026
  • CTEK UK shop £179.90 checked 4 November 2026 Could not be established
CTEK — MXS 10 UK product page, Technical specification, Battery types, Manufacturer document, checked 4 November 2026
CTEK MXS 5.0
Latest source check 4 November 2026 · IP65
ctek.com
5 A 8 step, fully automatic charging cycle Published
Normal battery program 14.4V/5A. Use for WET batteries, Ca/Ca, MF, GEL batteries and many AGM batteries.
abs. 14.4 V · float 13.6 V
Published
BATTERY TYPES All types of 12V lead-acid batteries (WET, MF, Ca/Ca, EFB, AGM and GEL)
Published
AGM option 14.7V/5A. Use for charging most AGM batteries like Optima and Odyssey.
abs. 14.7 V · float 13.6 V
Published
Normal battery program 14.4V/5A. Use for WET batteries, Ca/Ca, MF, GEL batteries and many AGM batteries.
abs. 14.4 V · float 13.6 V
No published lithium charge profile found (checked 4 November 2026). Selected manually Yes (built in) £89.90 to £89.90
seen 4 November 2026
  • CTEK UK shop £89.90 checked 4 November 2026 Could not be established
CTEK MXS 5.0 Manual (UK-EN), Charging programs table, Manufacturer document, checked 16 September 2026
Halfords Smart Battery Charger 6A
Latest source check 4 November 2026
halfords.com
6 A 7-stage charging cycle for lithium batteries and a 9-stage cycle for lead acid/AGM batteries Published
a 9-stage cycle for lead acid/AGM batteries
No published charge profile found (checked 4 November 2026). Published
a 9-stage cycle for lead acid/AGM batteries
No published charge profile found (checked 4 November 2026). Published
a 7-stage charging cycle for lithium batteries
Not stated No published temperature compensation statement found (checked 4 November 2026). not recorded

No UK retailer link recorded.

Halfords — Choose the right battery charger for your car, Manufacturer document, checked 4 November 2026
NOCO Genius10 UK
Latest source check 4 November 2026 · IP65
no.co
10 A No published stage count found (checked 4 November 2026). Published
12V: 14.5V | 10A | Up To 230AH Batteries (Wet Cell, Gel Cell, Enhanced Flooded, Maintenance-Free and Calcium)
abs. 14.5 V
Published
12V: 14.5V | 10A | Up To 230AH Batteries
abs. 14.5 V
Published
12V AGM: 14.8V | 10A | Up To 230AH Batteries
abs. 14.8 V
Published
12V: 14.5V | 10A | Up To 230AH Batteries
abs. 14.5 V
Published
12V LITHIUM: 14.6V | 10A | Up To 230AH Batteries
abs. 14.6 V
Selected manually Yes (built in) £116.68 to £116.68
seen 4 November 2026
  • Tayna Batteries £116.68 checked 4 November 2026 No affiliate programme found
NOCO GENIUS10 User Guide & Warranty, Charging Modes, Manufacturer document, checked 4 November 2026
NOCO Genius5 UK
Latest source check 4 November 2026 · IP65
no.co
5 A No published stage count found (checked 4 November 2026). Published
12V: For charging 12-volt Wet Cell, Gel Cell, Enhanced Flooded, Maintenance-Free and Calcium batteries. 14.5V | 5A | Up To 120Ah Batteries
abs. 14.5 V
Published
12V: 14.5V | 5A | Up To 120Ah Batteries (Enhanced Flooded named)
abs. 14.5 V
Published
12V AGM: For charging 12-volt AGM batteries. 14.8V | 5A | Up To 120Ah Batteries
abs. 14.8 V
Published
12V: 14.5V | 5A | Up To 120Ah Batteries (Gel Cell named)
abs. 14.5 V
Published
12V LITHIUM: For charging 12-volt lithium-ion batteries, including lithium iron phosphate. For use on batteries with Battery Management Systems (BMS) only. 14.6V | 5A | Up To 120Ah Batteries
abs. 14.6 V
Selected manually Yes (built in) £69.22 to £69.22
seen 4 November 2026
  • Tayna Batteries £69.22 checked 4 November 2026 No affiliate programme found
NOCO GENIUS5 User Guide & Warranty, Charging Modes, Manufacturer document, checked 4 November 2026
Ring SmartChargePro 25 (RSCPR25)
Latest source check 4 November 2026
ringautomotive.com
25 A The Ring Automotive SmartChargepro range are all Multi-Stage battery chargers. (eight numbered stages: Desulphation, Soft start, Bulk charge, Absorption, Equalisation, Battery test, Recondition, Float) Published
Lead Acid (Wet) — Bulk and absorption 14.7v (RSCPR824: 29.4v), recondition up to 16v (RSCPR824: 32v)
abs. 14.7 V
No published charge profile found (checked 4 November 2026). Published
AGM — Designed for AGM batteries and applies a maximum charge of 14.4v (RSCPR824: 28.8v)
abs. 14.4 V
Published
Gel — Designed for Gel batteries and applies a maximum charge of 14.1v (RSCPR824: 28.2v)
abs. 14.1 V
No published lithium charge profile found (checked 4 November 2026). Selected manually Yes (optional external) not recorded

No UK retailer link recorded.

Ring SmartChargePro Instructions (RSCPR7/10/15/25/35/50/824), Battery Chemistry Selection, Manufacturer document, checked 4 November 2026
Sargent EC155 on-board charger / power supply
Latest source check 4 November 2026
sargentltd.co.uk
Document differences
Issue 2: 12 A / 155 W shared supply; CAT017: 14.5 A / 200 W. Hardware revision applicability is unresolved. See the onboard evidence card; no automatic current comparison.
See both sources
fixed voltage battery charger / power converter ... supplies 13.8V DC Issue 2 names standard lead-acid batteries and a fixed-voltage 13.8 V supply; CAT017 names Flooded/AGM and lists the mains charger as '200W @14.5A/13.8V (max)'. Document applicability remains unresolved.
Document scope and sources
EFB is not named separately in Issue 2 or CAT017 (both re-read 4 November 2026). This is not an incompatibility finding.
Document scope and sources
CAT017 names AGM, subject to confirmation for the particular battery. Do not apply this undated sheet to every EC155 revision.
Document scope and sources
Issue 2 permits gel conditionally, depending on the battery documentation. This is not a universal gel profile approval.
Document scope and sources
No lithium statement found in Issue 2 or CAT017 (both re-read 4 November 2026); this does not establish incompatibility.
Document scope and sources
Fixed profile No published temperature compensation statement found (checked 4 November 2026). £331.25 to £331.25
seen 4 November 2026
Sargent EC155 Power Control System — User Instructions, Issue 2, 3.4 Battery, A) Type / Selection, Manufacturer document, checked 4 November 2026
Sterling Power Pro Charge Ultra PCU1220 (12V 20A)
Latest source check 4 November 2026 · IP22
sterling-power.com
20 A multi stage charge performance ... (IE, Fast charge, absorption, float, etc) Published
Open | Sealed lead: Preset-1 14.8 VDC 13.6 VDC; Preset-2 14.4 VDC 13.6 VDC (Charging DC Voltage, Float DC Voltage)
abs. 14.8 V · float 13.6 V
No published charge profile found (checked 4 November 2026). Published
AGM: Preset-1 14.3 VDC 13.3 VDC; Preset-2 14.6 VDC 13.6 VDC
abs. 14.3 V · float 13.3 V
Published
GEL: Preset-1 14.0 VDC 13.7 VDC; Preset-2 14.4 VDC 13.8 VDC
abs. 14 V · float 13.7 V
Published
Lithium 0 deg C **: Preset-1 14.25VDC 13.5 VDC, Preset-2 14.6 VDC 14.0 VDC; second Lithium 0 deg C ** row: Preset-1 14.4 VDC 13.8 VDC, Preset-2 CUSTOM - Li (**Lithium battery charging must be used in conjunction with a battery balancer)
abs. 14.25 V · float 13.5 V
Selected manually Yes (optional external) £348.38 to £348.38
seen 4 November 2026
Sterling Power Pro Charge Ultra Instructions (2022+ model), Front panel item 10 table (p.07) and Battery Type Profiles table (p.10), Manufacturer document, checked 4 November 2026
OptiMate 6 Ampmatic
Latest source check 4 November 2026 · IP54
optimate1.com
5 A 9-step 12V 5A sealed battery saving charger & maintainer Published
1 x 12V STD / AGM-MF / GEL; CHARGE 14.4V; Float voltage setting: 13.6V
abs. 14.4 V · float 13.6 V
Published
Automatically charge, test and maintain any size 12V AGM, GEL, EFB or STD starter or deep cycle battery (product page; the instructions list STD / AGM-MF / GEL only)
Published
STD / AGM-MF / GEL (single automatic program)
abs. 14.4 V · float 13.6 V
Published
STD / AGM-MF / GEL (single automatic program)
abs. 14.4 V · float 13.6 V
No published lithium charge profile found (checked 4 November 2026). Fixed profile Yes (built in) £114.99 to £114.99
seen 4 November 2026
OptiMate 6 Ampmatic — Instructions for use, Cover, Manufacturer document, checked 4 November 2026
OptiMate Lithium 4s 5A
Latest source check 4 November 2026 · IP54
optimate1.com
5 A 10 STEPS No published charge profile found (checked 4 November 2026). No published charge profile found (checked 4 November 2026). No published charge profile found (checked 4 November 2026). No published charge profile found (checked 4 November 2026). Published
1 x 12.8V (4 x 3.2V cells) LiFePO4; program chart 14.4V / 13.6V; leaflet: 'voltage controlled between 14.0 and 14.3V' (absorption pulses), 'float charge periods at a voltage of 13.6V'
abs. 14.4 V · float 13.6 V
Fixed profile Yes (built in) £119.99 to £119.99
seen 4 November 2026
OptiMate Lithium 4s 5A — Instructions for use, Cover and program diagram, Manufacturer document, checked 4 November 2026
Victron Blue Smart IP22 Charger 12/20 (1)
Latest source check 4 November 2026 · IP22
victronenergy.com
20 A 6-stage adaptive (3 stage for Li-ion) Published
MODE button to set: NORMAL (14,4 V) / HIGH (14,7 V) / RECONDITION / LI-ION. Float Normal: 13,8 V High: 13,8 V. Victron names the modes Normal/High rather than by chemistry.
No published charge profile found (checked 4 November 2026). Published
Normal: 14,4 V High: 14,7 V (absorption); Normal: 13,8 V High: 13,8 V (float). No mode is assigned to AGM specifically.
Published
Normal: 14,4 V High: 14,7 V (absorption); Normal: 13,8 V High: 13,8 V (float). No mode is assigned to Gel specifically.
Published
Li-ion: 14,2 V (absorption); Li-ion: 13,5 V (float); Li-ion: 13,5 V (storage). HTML manual table gives Li-ion float 'N/A', storage 13.5V.
abs. 14.2 V · float 13.5 V
Selected manually Yes (optional external) £156 to £156
seen 4 November 2026
Blue Smart IP22 Charger 230 VAC datasheet, Specification table, 12 V columns, Manufacturer document, checked 4 November 2026
Victron Blue Smart IP65 Charger 12/15
Latest source check 4 November 2026 · IP65
victronenergy.com
15 A 7-stage adaptive (4 stage for Li-ion) Published
Charge voltage 'absorption' Normal: 14,4 V | High: 14,7 V; Charge voltage 'float' Normal: 13,8 V | High: 13,8 V. Victron names the modes Normal/High rather than by chemistry; flooded lead-acid is named as suited to the integrated modes.
No published charge profile found (checked 4 November 2026). Published
Normal: 14,4 V | High: 14,7 V (absorption); 13,8 V (float). AGM is named as suited to the integrated modes; no mode is assigned to AGM specifically.
Published
Normal: 14,4 V | High: 14,7 V (absorption); 13,8 V (float). Gel is named as suited to the integrated modes; no mode is assigned to Gel specifically.
Published
Li-ion: 14,2 V (absorption); Li-ion: 13,5 V (float, datasheet) — the HTML manual table gives float 'N/A' and storage 13.5V for Li-ion.
abs. 14.2 V · float 13.5 V
Selected manually Yes (built in) £102.82 to £102.82
seen 4 November 2026
  • 12 Volt Planet £102.82 checked 4 November 2026 Programme exists, rate not published
Blue Smart IP65 Charger datasheet (230 VAC), Specification table, 12 V column, Manufacturer document, checked 4 November 2026
Victron Blue Smart IP67 Charger 12/25 (1)
Latest source check 4 November 2026 · IP67
victronenergy.com
25 A 6-stage adaptive (3 stage for Li-ion) Published
Normal: 14,4 V High: 14,7 V (absorption); Normal: 13,8 V High: 13,8 V (float). Victron names the modes Normal/High rather than by chemistry.
No published charge profile found (checked 4 November 2026). Published
Normal: 14,4 V High: 14,7 V (absorption); 13,8 V (float). No mode is assigned to AGM specifically.
Published
Normal: 14,4 V High: 14,7 V (absorption); 13,8 V (float). No mode is assigned to Gel specifically.
Published
Li-ion: 14,2 V (absorption); Li-ion: 13,5 V (float); Li-ion: 13,5 V (storage). HTML manual table gives Li-ion float 'N/A', storage 13.5V.
abs. 14.2 V · float 13.5 V
Selected in the maker’s app Yes (built in) £148.80 to £148.80
seen 4 November 2026
  • 12 Volt Planet £148.80 checked 4 November 2026 Programme exists, rate not published
Blue Smart IP67 Charger 230 VAC datasheet, Specification table, 12 V columns, Manufacturer document, checked 4 November 2026
Victron Skylla-IP44 12/60 (1+1)
Latest source check 4 November 2026 · IP44
victronenergy.com
60 A 7 stage adaptive (lead-acid); 'Charge algorithm, Li-Ion 3 stage, with on-off control or CAN bus control' (datasheet) / 'Four stage charge curve for Lithium Iron Phosphate (LiFePo4) batteries' (manual) Published
2 Default setting — ... Rolls Marine (flooded), Rolls Solar (flooded) — 12 V 14,4 / 13,8 / 13,2
abs. 14.4 V · float 13.8 V
No published charge profile found (checked 4 November 2026). Published
2 Default setting — Gel Victron deep discharge, Gel Exide A200 / AGM Victron deep discharge / Stationary tubular plate (OPzS) / Rolls Marine (flooded), Rolls Solar (flooded) — 12 V 14,4 / 13,8 / 13,2; 3 AGM spiral cell / Rolls AGM — 12 V 14,7 / 13,8 / 13,2
abs. 14.4 V · float 13.8 V
Published
1 Gel Victron long life (OPzV) / Gel exide A600 (OPzV) / Gel MK — 12 V 14,1 / 13,8 / 13,2
abs. 14.1 V · float 13.8 V
Published
7 Lithium Iron Phosphate (LiFePo4) batteries — 12 V absorption 14,2, float n.a., storage 13,50; 'Constant current is applied until absorption voltage is reached (14,2 V / 28,4 V).'
abs. 14.2 V
Selected manually Yes (optional external) not recorded

No UK retailer link recorded.

Skylla-IP44 Manual (EN NL FR DE ES IT), 3.3 Battery selection, Manufacturer document, checked 4 November 2026

“Published” means the maker names a profile for that chemistry in its own manual or datasheet. An absence line means the document was checked on the date shown and names none; it is never a statement that the charger cannot be used with that chemistry. Retailers with and without affiliate programmes are listed on the same footing.

Onboard chargers: what the documents establish

Four evidence cards for Sargent, CBE and Schaudt units. Start with the model and suffix on the fitted charger. A control-panel name or vehicle year cannot identify it reliably.

Charger specifications, battery-maker statements and vehicle-handbook references answer different questions. Both the applicable charger instructions and the exact battery requirements must be satisfied. A voltage match alone is not compatibility approval.

CBE CB522-LT

A dedicated 12 V lithium charger with documented stage timing and cold-current reduction. The sensor arrangement and exact battery requirements still need checking.

Document and model scope. Manual edition 04/2019, cod. 000241a, Rev.00. This is not CB516, CB516-3 or CB516/24V. A separate hardware revision was not established. Hardware revision: not established.

Published figures and evidence gaps

Profile scope

  • 12 V lithium charging sequence. Check the complete stage sequence against the exact battery requirements, including any BMS and temperature restrictions.

Battery pairing statements

No statement found. No exact battery-model pairing approval was established. The stated 14.5 V stage needs checking against the chosen battery’s requirements.

Scope: Exact battery model.

CBE CB522-LT Battery Charger — User Manual

Vehicle evidence

No verified vehicle-model or model-year fitment is recorded for this card. Check the actual fitted unit.

Still to establish

Exact battery approval; Verified vehicle fitment.

Do not treat reduced charging below freezing as an instruction that the selected battery may be charged there.

Could not be re-read (500) on 2026-11-04: https://cbe.it/en/asset-frontend-path/eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpZCI6Mjg3ODN9.-yPlyS4nO6dxi0-J8HMkooKpVPjPvC5ZP7D-r4DoQ0M

These documents do not provide an automatic current comparison or approval of an installation.

Source documents, editions and checked dates

  1. CBE CB522-LT Battery Charger — User Manual — 04/2019; cod. 000241a; Rev.00. English pp7–9.

    Source read 20 September 2026. Manufacturer endpoint read on 20 September; a repeat request on 21 September returned HTTP 500. This failure does not refresh the read date. Requests on 4 November 2026 (curl and browser) also returned HTTP 500; www.cbe.it now redirects to alko-tech.com ('CBE is now AL-KO VT'), whose battery-charger page does not list the CB522-LT.

  2. CBE CB522-LT Battery Charger — User Manual — 04/2019; cod. 000241a; Rev.00. English pp7–9.

    Source read 4 November 2026. Manufacturer-authored document hosted by a distributor. CBE-authored document hosted by Camping Langhans. Cover and English pp7–9 visually checked: same printed edition identifiers. Byte identity with the earlier manufacturer-hosted copy has not been established.

Schaudt EBL119 / with OVP

This manual specifies gel and AGM profiles with different voltage and duration. It supplies no lithium pairing statement.

Document and model scope. English manual dated 15.09.2015, 811.0421 BA/EN. The manufacturer index uses product 9110421. Later handbook selections are not merged into this edition. Hardware revision: not established.

Published figures and evidence gaps

Profile scope

  • Gel.
  • AGM.

Battery pairing statements

No statement found. No lithium pairing approval was established in the checked manual.

Scope: Lithium battery pairing.

Schaudt EBL119 / EBL119 with OVP — Instruction Manual

Vehicle evidence

Generic handbook only: Dethleffs motorcaravans — multiple models, 2022 handbook. A generic handbook includes an EBL119 section. It does not establish exact model/year fitment for an individual vehicle. The handbook discusses a lead-acid selection as well; do not transfer that selection into the 2015 manual’s gel/AGM profile data.

Dethleffs Motorcaravan Owners Handbook

Still to establish

Exact vehicle fitment; Lithium battery pairing; Hardware revision.

Figure 3 in the EBL119 manual has an EBL30 caption. The mismatch is retained as a source caveat; no EBL30 specifications are imported.

These documents do not provide an automatic current comparison or approval of an installation.

Source documents, editions and checked dates

  1. Schaudt EBL119 / EBL119 with OVP — Instruction Manual — 15.09.2015; 811.0421 BA/EN. pp9–10, §§5.2–5.3.

    Source read 4 November 2026.

  2. Dethleffs Motorcaravan Owners Handbook — Motorcaravan 22-02-FR; 2022. §9.8, pp165–167.

    Source read 4 November 2026.

Sargent EC155PSU

Two Sargent documents give different power, current and battery-capacity ranges. Identify the fitted unit before relying on either set of ratings.

Document and model scope. Issue 2 is the June 2013 instruction edition, applicable to EC5x revision-2 control panels. It does not identify a PSU hardware revision. The CAT017 sheet does not establish a hardware boundary. Hardware revision: not established.

Existing comparison-table entry

Unresolved document differences

  • Unresolved: no documented PSU revision boundary connects these different ratings. Current matching is unavailable.
  • Preserve each document’s rating; do not silently replace one with the other.
  • The capacity ranges and chemistry guidance differ between documents.

Published figures and evidence gaps

Profile scope

  • Fixed-voltage supply. The available output is shared with leisure loads; this is not a battery-only multi-stage rating.

Battery pairing statements

No statement found. No exact lithium-battery pairing approval was established from the checked sources. Check both applicable charger instructions and the chosen battery requirements.

Scope: Exact lithium battery pairing.

Sargent EC155 Power Control System — User Instructions; Sargent EC155 Power Supply Unit System Kits

Vehicle evidence

No verified vehicle-model or model-year fitment is recorded for this card. Check the actual fitted unit.

Still to establish

PSU hardware revision; Exact battery approval; Verified vehicle fitment.

A control-panel revision is not a charger revision. Confirm the rating plate and applicable instructions for the actual PSU.

These documents do not provide an automatic current comparison or approval of an installation.

Source documents, editions and checked dates

  1. Sargent EC155 Power Control System — User Instructions — Issue 2, June 2013. pp1–2, §3.1; p4, §3.4.

    Source read 4 November 2026. Section 3.1 on p2 states 155 W; the p1 introductory description instead says 150 W. These are document statements, not a measured output.

  2. Sargent EC155 Power Supply Unit System Kits — CAT017; publication date not stated. p1, specification table and battery footnote.

    Source read 4 November 2026.

Sargent PX300

Sargent gives conditional lithium guidance and Fogstar names the Drift family. Published current figures have different stated scope and unresolved revision applicability.

Document and model scope. Hardware revision is unstated in the checked support pages and Swift handbook. A control panel or system-family name is not a charger revision. Hardware revision: not established.

Unresolved document differences

  • Sargent states 20 A charging current; Swift states 25 A shared supply output. Their measurement scope differs and revision mapping is unresolved. They are not interchangeable limits, so no automatic current comparison is offered.

Published figures and evidence gaps

Profile scope

  • Published boost and float. Matching voltages alone do not establish approval for a battery or an installation.

Battery pairing statements

Conditional manufacturer statement · charger maker. Sargent discusses lithium batteries conditionally and asks the reader to obtain confirmation from the chosen battery manufacturer.

Scope: PX300 with a suitable internal-BMS leisure lithium battery. Its list of supported power-system families is not vehicle fitment evidence.

Sargent — I would like to fit a Lithium battery

Published pairing statement · battery maker. Fogstar explicitly names PX300 compatibility for Drift batteries. The statement does not enumerate every battery generation or charger hardware revision.

Scope: Fogstar Drift family + Sargent PX300. Confirm the exact battery requirements and fitted charger; this family statement is not whole-vehicle approval.

Fogstar Drift Knowledge Hub

Vehicle evidence

Handbook association: Swift Monza, 2025 handbook. The handbook identifies PX300 alongside MC100/MC200/EC940 system components. The handbook warns that specifications may change. This is not a VIN-specific fitted-unit guarantee, or evidence for other Swift ranges or years.

Swift Monza Owners Handbook

Still to establish

Charger hardware revision; Exact battery-generation scope.

Confirm the actual fitted rating and the exact battery model with the manufacturers before relying on a current figure.

These documents do not provide an automatic current comparison or approval of an installation.

Source documents, editions and checked dates

  1. Sargent PX300 — 20amp, 3-Stage Battery Charger — Live support page; undated. Specification table and feature list.

    Source read 4 November 2026.

  2. Sargent — I would like to fit a Lithium battery — Live support article; undated. Lithium battery guidance.

    Source read 4 November 2026.

  3. Fogstar Drift Knowledge Hub — Live FAQ; undated. PX300 compatibility and charger settings questions.

    Source read 4 November 2026.

  4. Swift Monza Owners Handbook — Issued 2025; Part No. 1453854. p1; p63 system components; p75 charger specification.

    Source read 4 November 2026.

What the makers say about using the wrong profile

CTEK CS ONE (Gen 2):

WARNING! Do not apply RECOND mode on the following types of batteries: - Lithium: LiFePO4 - Lead Acid: GEL or AGM

CTEK LITHIUM XS:

The LITHIUM XS charger model is designed for Lithium-ion batteries using LiFePO4 technology only. Please check with the battery manufacturer for details. Do not use the LITHIUM XS charger for any other battery technology.

CTEK MXS 10:

The charger is designed for charging only batteries according to the technical specification. Do not use the charger for any other purpose. Always follow battery manufacturers' user and safety recommendations.

CTEK MXS 5.0:

The charger is only designed for charging batteries according to the technical specification. Do not use the charger for any other purpose. Always follow battery manufacturers’ user and safety recommendations

NOCO GENIUS10UK:

CAUTION. USE THIS MODE WITH EXTREME CARE. THIS MODE SHOULD ONLY BE USED WITH 12-VOLT LITHIUM BATTERIES THAT HAVE A BUILT-IN BATTERY MANAGEMENT SYSTEM (BMS).

NOCO GENIUS5UK:

CAUTION. USE THIS MODE WITH EXTREME CARE. THIS MODE SHOULD ONLY BE USED WITH 12-VOLT LITHIUM BATTERIES THAT HAVE A BUILT-IN BATTERY MANAGEMENT SYSTEM (BMS). LITHIUM-ION BATTERIES ARE MADE AND CONSTRUCTED IN DIFFERENT WAYS AND SOME MAY OR MAY NOT CONTAIN A BATTERY MANAGEMENT SYSTEM (BMS). CONSULT THE LITHIUM BATTERY MANUFACTURER BEFORE CHARGING AND ASK FOR RECOMMENDED CHARGING RATES AND VOLTAGES. SOME LITHIUM-ION BATTERIES MAY BE UNSTABLE AND UNSUITABLE FOR CHARGING.

TecMate (OptiMate) OptiMate 6 Ampmatic TM180 / TM182 (UK):

DO NOT USE FOR NiCd, NiMH, Li-Ion OR NON-RECHARGEABLE BATTERIES.

TecMate (OptiMate) OptiMate Lithium 4s 5A TM290 / TM294 (UK):

AUTOMATIC CHARGER ONLY FOR 12.8V LIFEPO4 (LITHIUM IRON PHOSPHATE ) BATTERIES. A rechargeable LIFEPO4 battery should comply with IEC62133*. DO NOT USE FOR NiCd, NiMH, Lead-Acid or any other type of Li-Ion or NON-RECHARGEABLE BATTERIES.

Ring Automotive RSCPR25:

In addition to the battery types and capacity detailed in the specifications, the charger is suitable for the following only: • Charging only a single battery at any one time • Charging rechargeable lead acid (wet), Gel, AGM and calcium batteries with 6 cells

Sargent Electrical EC155 Power Supply Unit (EC155PSU):

For optimum performance and safety it is essential that only a proprietary brand LEISURE battery is used with a typical capacity of 75 to 120 Ah (Ampere / hours). A normal car battery is NOT suitable.

Sterling Power Pro Charge Ultra PCU1220:

Charging a battery at an incorrect voltage could cause damage or degradation to your system. If you are unsure, please consult your battery manufacturer. If you are charging multiple battery banks that all have different chemistries and recommended charge voltages, please charge all banks at the lowest common charge voltages.

Victron Energy Blue Smart IP22 Charger 12/20 (1):

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 'Operation > Charge modes' section and the battery manufacturer's recommendations for more information.

Victron Energy Blue Smart IP65 Charger 12/15:

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 'Operation > Charge modes' section and the battery manufacturer's recommendations for more information.

Victron Energy Blue Smart IP67 Charger 12/25:

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 'Operation > Charge modes' section and the battery manufacturer's recommendations for more information.

Victron Energy Skylla-IP44 12/60:

Before the main battery is connected to the charger, make sure the charger is set to the correct battery type.

Both the applicable charger instructions and the exact battery requirements must be satisfied. If they disagree, obtain manufacturer confirmation; do not silently choose one voltage. The battery dataset records absorption and float voltages per battery where published, and the absence line where not.

How this list was compiled

Common questions

Does a matching voltage prove an onboard charger is compatible with my lithium battery?

No. The onboard evidence cards keep charger specifications, battery-maker statements and vehicle-handbook associations separate. Both applicable charger instructions and exact battery requirements must be satisfied. A family-scoped pairing statement does not cover every battery generation or installation. Missing lithium guidance is an evidence gap, not incompatibility; unresolved ratings are not used for automatic current comparisons.

Which leisure battery chargers publish a lithium (LiFePO4) charge profile?

9 of the 16 chargers indexed publish a LiFePO4 profile in the maker’s own documentation: CTEK LITHIUM XS; NOCO Genius10 UK; NOCO Genius5 UK; OptiMate Lithium 4s 5A; Sterling Power Pro Charge Ultra PCU1220 (12V 20A); Victron Blue Smart IP22 Charger 12/20 (1); Victron Blue Smart IP65 Charger 12/15; Victron Blue Smart IP67 Charger 12/25 (1); Victron Skylla-IP44 12/60 (1+1). 5 carry the line “No published lithium charge profile found (checked 4 November 2026).”. An absence is not a statement that the charger cannot be used with lithium; it means no profile was found in the particular documentation checked.

What is the difference between a charger’s amps and its charge profile?

Retailers list output current and the number of stages. The profile is the set of voltages the charger applies for a given chemistry: absorption, float and storage. Two 15 A chargers can apply different voltages, and makers publish different charge voltages for different chemistries. This page lists the chemistries each maker actually publishes a profile for, with the voltages where printed.

What happens if I use the wrong profile for my battery chemistry?

CTEK’s own documentation for the CS ONE (Gen 2) says: “WARNING! Do not apply RECOND mode on the following types of batteries: - Lithium: LiFePO4 - Lead Acid: GEL or AGM” (checked 4 November 2026). Where a maker publishes no such warning, that is recorded as an absence, not as safety.

Do these chargers pick the profile automatically?

9 of the 16 select the profile manually (a button or switch), 2 automatically or through the maker’s app, and the rest are fixed or unstated. Each row names the method the maker publishes. Where a profile must be selected by hand, the manual is the authority on which setting matches the battery.

Are these ratings or recommendations?

Neither. Nothing on this page is a score, a rating or a “best”. Each row is what the maker publishes, quoted with a source URL and the date it was checked, and the retailer rows are listed in the same order whether or not a retailer has an affiliate programme.

Why does the mains charger matter if the van charges from the alternator?

A lead-acid battery left partially charged fails early through sulfation, in Victron’s published words. A mains charger with the right profile on hook-up or at home is the route to a full charge and float. The alternator route is covered on the split charge relay or DC-DC charger page.

Where next

This site publishes what manufacturers and standards bodies have published. It does not design electrical installations and is not a substitute for a competent auto electrician or a habitation check.