CTEK M25 - 12v 25a 8 Stage Marine Lead Acid Battery Charger

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The CTEK M25 is the ultimate charger for mid to large size boats with a 12v battery system. The M25 features state of the art 8 stage charging process, providing 25amps maximum charge output, the CTEK M25 is suitable for batteries between 30-450ahr batteries as well a maintaining up to 600ahr batteries. Now also compatable with modern LiFePO4 batteries.
The M25 has a long secondary cable with included temperature sensor, allowing for permanent installations for an ultimate charging solution irrespective of the weather conditions.

The M25 adopts CTEK's patented recondition mode. Reviving deeply discharged batteries, which can be an issue after a long day at sea. If you intend to say overnight on board, it is possible to switch the charger to night mode for silent charging.

The CTEK M25 battery chargers offer IP44 classification, which means the charger is suitable for outdoor use. The M25 does not have any galvanic currents and is fully compatible with the boats electronics. With the addition of reverse polarity protection, short circuit protection and no sparks, the CTEK M25 marine battery chargers is an essential companion for any marine enthusiast.


Input Voltage: 220-240v AC 50-60Hz
Charging Voltage Normal: 14.4v
Charging Voltage AGM: 14.7v
Charging Voltage Lithium: 13.8v
Charging Voltage Recondition: 15.8v
Min Battery Voltage: 2.0v
Charging Current: 25a Max
Back Current: <2ah / Month
Ripple: <4.5%
Charge Type: 8 Stage, fully automatic
Battery Types: Lead Acid and now LiFePO4 Batteries (Wet, MF, Ca/Ca, AGM, Gel and LifePo4)
Battery Capacity: 30-450ah and up to 600ah for Maintenance
Insulation Class: 1P44

Product brochure / datasheet can be downloaded by clicking the PDF icon just below the main image.


Product Videos

Model # 40-199
Barcode # 7340103401995


CTEK offers 5 year manufacturer warranty on this product. Warranty will be void if:

Charger has been used with much higher current and or voltage than designed for and specified in models specifications sheet.
Clear signs of heat on any of the CTEK casing, cables or circuitry.
Used with incorrect voltage or incorrect battery types.
Visible signs of impact or water damage.
CTEK product has been opened by a non CTEK authorised engineer or agent.

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