CTEK M15 12V 15A Marine Battery Charger

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Product Description

CTEK M15 12V 15A Marine Battery Charger, 5 Year Warranty. The M15 charges a wide range of marine batteries quickly and effectively.

Robust and flexible.

The M15 is the perfect 15A battery charger for all boat owners. It has a range of functions, including a Recond mode for reconditioning deeply discharged Wet and Ca/Ca batteries, and a temperature sensor which optimises the charge if the temperature deviates from +25ºC. It also has a Lithium* mode for lithium* ­batteries. The M15 comes with a long 4m ­cable with M10 eyelets for easy installation on your boat. *) 12V lithium batteries (LiFePO4, Li-Fe, Li-iron, LFP)

  • Dedicated Lithium* mode
  • Compatible with batteries from 28Ah to 300Ah (20Ah to 280Ah lithium*).
  • Recond program for deeply discharged batteries
  • AGM program for AGM batteries
  • Fully automatic and easy to use. Simple to connect, spark proof and reverse-polarity protected.
  • Compact tough design
  • IP44 rated, making it suitable for outdoor use
  • 5-year warranty
*12V lithium batteries (LiFePO4, Li-Fe, Li-iron, LFP)


CTEK Product Card

CTEK Product Manual



Brand CTEK

GTIN 7340103401889

Warranty Period: 1 Year

Product Category Battery Chargers

Output Current Rating (Amps) 15

Model M15

Charger Voltage 12V

Insulation Class IP44

Back Current Drain Corresponding to less than 2Ah/month

Input 220–240VAC, 50–60Hz, 1.8A max

Battery Types WET, MF, AGM, GEL, LiFePO4

Start Voltage 2.0V

Output System Voltage 12V

Output 14.4/14.7/13.8/15.8V, 15A max

Ambient Temperature -20˚C to +50˚C

Battery Capacity Lead-acid battery types: 28-300 Ah. | LiFePO4: 20-280Ah.


CTEK 8 Step Charging


Customer Reviews

CTEK M200 Marine Charger is fantastic Review by
I have the CTEK M200 permanently fixed to my fishing boat to charge and maintain my start and accessories batteries. Its compact design makes it easy to find a place to mount the unit and with four meters of cable it doesn't have to be in battery compartment.The 15 amp capacity fully charges the two batteries overnight and i leave it connected when the boat is not being used to maintain the batteries at full charge thus extending battery life not to mention, no nasty surprises at the boat ramp.After some research i choose the CTEK due to its simplicity, quality and waterproof design.Happy Boating
(Posted on 26 December 2018)

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Product Q&A

Ask Us a Question
  • What size battery charger do I need for my lead acid battery I have in my camper?

    A good battery charger rule of thumb for charging a lead acid battery, is using a charger with output current (amps) of 10-20% of the battery total stored capacity (Ah).

    So, for example if the battery is 12V 100Ah, the charger need to be minimum of 10A and maximum of 20A.  Often splitting the difference at 15% (so a 12V ~15A charger) is a good option. Happy charging!


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