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CTEK M300 12V 25 Amp Marine Battery Charger
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CTEK M300 12V 25 Amp Marine Battery Charger

CTEK M300 is a 25A smart charger designed for marine and motorhome permanent installation. It is an 8-step, fully-automatic battery charger developed to make boat & RV life more convenient. Included is a second charger for your starter battery.
NZ $670.00
Incl GST

CTEK charger features:

  • Eight step, fully automatic switch mode.
  • Revives, charges, checks and maintains virtually all types of 12V lead-acid batteries (Wet, MF, GEL and AGM) from 50Ah to 500Ah.
  • Desulphation mode with pulses.
  • Soft start for severely discharged batteries.
  • Recondition mode with controlled top charging recovers the capacity of a severely discharged battery.
  • Maintenance pulse charging increases battery life and gives superb performance.
  • Charges even drained batteries.
  • Temperature compensated for optimal charging voltage at all times.
  • The charger can be connected for months, ideal for seasonal vehicles.
  • Compact design with mounting holes for permanent assembly.


Technical specs:

  • Input voltage: 170-260VAC, 50-60Hz
  • Efficiency: 85%
  • Charging voltage: 14.4V, Temperature compensated
  • Back current drain: <2Ah per month
  • Ripple: <4%
  • Ambient temperature: -20°C to +50°C, output power is reduced automatically at higher temperatures.
  • Cooling Fan
  • Type of charger: Eight step, fully automatic, switch mode with pulse maintenance.
  • Battery capacity: 50-500Ah
  • Insulation IP 44 (Outdoor use)
2 yr warranty.


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