CTEK M300 Marine Battery Charger (M300)

Manufacturer: Ctek Marine Chargers
Part Number: CTEK M300
Weight: 2.20kg
Dimensions: 235.00mm (L)
130.00mm (W)
65.00mm (H)
Battery Types : All types of 12V lead-acid batteries (WET, MF, Ca/Ca, AGM and GEL)
Charging Voltage : 14.4V
Volt: 12V
Charging Current : 25A max
Min Battery Voltage : 2.0V
Rated Voltage AC : 220–240VAC, 50–60Hz

Price excludes VAT


Complete marine charging for large boats

M300 is the charger we recommend for boats with large battery banks. The charger has a four metre long secondary cable and a temperature sensor for optimised charging irrespective of temperature, which gives extra flexibility in permanent installations. M300 is a fully automatic eight-stage charger that supplies 25 A and is ideal for batteries between 40 and 500 Ah. 

M300 analyses whether the battery can accept and retain the charge, it removes harmful lead sulphate crystals, gives an effective charge and automatically switches to safe maintenance charging when the battery is fully charged. 

The practical Recond mode reconditions the battery following deep discharge cycles, which can occur after a long day at sea. If you intend to stay overnight onboard you can switch to Night mode for silent charging.

IP44 classification means M300 is approved for outdoor use. It does not generate any harmful galvanic currents, is fully protected from producing voltages that can damage the vehicle’s electronics and has been developed to offer safe charging: non-sparking, reverse polarity protection and short circuit proof. M300 comes with a five year guarantee.

Eyelet M10 (10,4 mm)
Temp sensor on cable.
  • Technology

    Volt: 12V
  • Charging current: 25A max
  • Charger type: 8 step, fully automatic charging cycle
  • Battery capacity: 40–500Ah up to 500Ah for maintenance
  • Functions

    RECOND: Recondition of deeply discharged batteries
  • Auto: Fully automatic for optimal charging
  • Fully Charged Battery / Maintenance Charging
  • 12V: For all lead-acid batteries
  • Temperature sensor
  • NIGHT: charging at reduced power and with deactivated fan for 8 hours