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CTEK M300 - 40Ah upto 500Ah Battery Charger without Starter

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.

General Information
Ambient Temperature: -20C to +50C, output power is reduced automatically at high temperatures
Back current drain: <1Ah/month
Battery Capacity: 40_500Ah up to 500Ah for maintenance
Battery types: All types of 12V lead-acid batteries (WET, MF, Ca/Ca, AGM and GEL)
Brand: CTEK
Charger type: 8 step, fully automatic charging cycle
Charging current: 25A max
Charging voltage: 14.4 V
Current mains: 2.9A rms (at full charging current)
Dimensions: 235 x 130 x 65 mm
Frequency: 50_60Hz
Insulation Class: IP44
Min battery voltage: 2.0 V
Model: M300
Rated Voltage AC: 220_240VAC
Ripple: Less than 4% voltage
Volt: 12 V
Weight: 2.2 Kg