CTEK M300

The complete power battery charger.

The CTEK M300 (25A) is a powerful and complete 8-step, fully-automatic, switch mode battery charger that analyses, looks after, charges and maintains all types of boat batteries. The M300 is designed to take care of your service batteries and the M300 STARTER offers a constant maintenance battery charge for the starter battery. The M300 has been specially developed to make boat life safer and more convenient for today's boat owners.

CTEK M300

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Applications

  • Motorboat
  • Sailboat
  • Caravan

Features & Benefits

  • Eight step, fully automatic switch mode model.
  • 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.
  • Low back current drain, low ripple and input voltage independent (170-260V).
  • High efficiency: 85%
  • The charger can be connected for months, ideal for seasonal vehicles.
  • Compact design with mounting holes for permanent assembly.
  • Delivered with the M300 starter, an extra charger for your starter batteries, with the same specification as the XS 800
  • 5 year warranty.

Technical Data

Model CTEK M300
Input voltage AC 170-260VAC, 50-60Hz
Output voltage Nominal: 12V
Efficiency 85%
Charging voltage 14.4V, Temperature compensated
Charging current 25A max
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.
Type of batteries All types of 12V lead-acid batteries (Wet, MF, AGM and GEL).
Battery capacity 50-500Ah
Dimensions (L x W x H) 235x130x65mm
Insulation IP 44 (Outdoor use)***
Weight 1.4kg

*) Back current drain is what drains the battery if the charger is connected without the power cord connected.

**) Ripple denotes the amount of interference there is to the current and voltage. A high current ripple heats the battery and shortens its life. A linear charger has a current ripple of 70 - 400% which is much larger than the maximum 5% for a modern sealed battery. Voltage ripple could harm other equipment, which is connected to the battery.

The M300 delivers voltage and current with very low ripple. The battery gains a long service life and there is no risk of damage to other electronic devices connected to the battery.

***) IP 44 cannot be guaranteed unless the charger is positioned with its top or long side facing up.

For the technical data of the M300 starter, please see the XS 800.