M300

The ideal choice for larger marine batteries

M300

The ideal choice for larger marine batteries

M300

The ideal choice for larger marine batteries
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Product information

  • Product information

    The ideal choice for larger marine batteries

    Compact, tough and powerful

    The M300 is recommended for boat owners who need quick and effective charging for larger service batteries.

    The 12V, 25A M300 is the ideal choice for recovery charging and maintaining all types of marine batteries from 40Ah up to 500Ah. It has a range of functions, including a Recond mode for reconditioning deeply discharged batteries, and a temperature sensor which optimises the charge if the temperature deviates from +25ºC. It also has a special Silent Night mode which reduces the noise of the fan by lowering the output power during periods of low energy consumption, such as at night. The M300 comes with a long 4m cable with eyelets for easy installation on your boat.

      ;*;Charges and maintains batteries from 40Ah up to 500Ah. ;*;Recond program for deeply discharged batteries ;*;Analysis step to check if battery can hold its charge ;*;Temperature compensated ;*;Short circuit proof
        ;*;Compact tough design ;*;Silent Night mode ;*;IP44 rated, making it suitable for outdoor use ;*;Safe spark free operation ;*;5-year warranty
        Technical information
        Input
        170–260VAC, 50–60Hz, 2.9A max
        Output
        14.4V, 25A max
        Back current drain*
        Corresponding to less than 2Ah/month
        Ambient temperature
        -20˚C to +50˚C
        Battery types
        All types of lead-acid batteries, 12V, WET, MF, AGM, GEL
        Battery capacity
        40–500Ah
        Warranty
        5 years
        Insulation class
        IP44
        User manual

        M300-safetyinstruction-au-EN.pdf

        M300-manual-AU-EN.pdf
      • Inside the box
        Product sheet

        M300-Productsheet-low-UK-EN.pdf
        FAQ
        Temperature LED is lit   ×
        Explanation M200 and M300 purchased before 2012:The temperature sensor is broken. The charger still works, but without temperature compensation.

        Explanation M200 and M300 purchased from 2012 and later: This is normal, the LED is on indicating that the temperature sensor is activated.
        Temperature LED is flashing   ×
        Explanation M200 and M300 purchased from 2012 and later: The temperature is above + 65 °C. The charging is interrupted. Press the MODE button to restart charging when the temperature has dropped below + 65 °C.
        The error LED is lit   ×
        Explanation 1: Reverse polarity.
        Test: Make sure that the + cable/clamp is connected to the + terminal and the – cable/clamp is connected to the – terminal.

        Explanation 2: Loads are connected to the battery which requires more power than the charger can provide.
        Test: Turn off or disconnect the loads when charging.

        Explanation 3: The clamps are short circuited in Supply mode.
        Test: Separate the clamps.
        No LED is lit when the charger is connected only to the power outlet   ×
        Explanation: One of the LED’s at the lower row should light up when the charger is connected to the power outlet.
        Test: Make sure that there is power from the power outlet.
        is lit for 4 hours and then turns into error mode   ×
        If the battery voltage is not above 12,5V after 4h the charger will turn into error mode, because the voltage has not increased in the way it should have done.

        Explanation 1: The battery is too large in relation to the capacity of the charger.
        Test: Make sure that the battery/batteries size is not larger than the recommendations.
        Test: Try to restart the charger because the charger might need more time to charge the battery.

        Explanation 2: Larger loads are connected to the battery.
        Test: Disconnect the battery and try to charge it without the loads.
        Test: Try to restart the charger because the charger might need more time to charge the battery.

        Explanation 3: If the battery is warm and/or is boiling heavily during the charging, it is most likely due to a defective cell in the battery.
        Test: Change the battery.
        The charger has gone into maintenance mode but cannot see that the recond is completed?   ×
        The Recond program starts with the normal charging program but has a recondition phase inserted after the charging, automatically followed by the maintenance mode. The Recond light “R” on the upper row may be tricky to see, as it will be lit after the third charging lamp, and turns off after the recondition is done, (lasts 0,5h – 4h) and after that the 4th, green maintenance light will be lit.
        is flashing, then turns into error mode   ×
        Explanation: The battery is probably too sulphated to revive. The battery is faulty and it is time to change it.
        No LED’s are lit on the top row when the charger is connected to both the power outlet and the battery   ×
        The LED’s on the bottom row are lit and you can change charging mode. None of the LED’s in the top row, indicating charging status, are lit.

        Explanation: The battery voltage could be under 2+/-0.5V.
        Test: Test the charger on a fresh battery.
        is lit and then turns into error mode   ×
        The analysis phase is testing if the battery can retain the charger given.

        Explanation 1: Large loads are connected to the battery and are draining the voltage.
        Test: Disconnect the battery and try charging again.

        Explanation 2: The battery cannot retain the charge given.
        Test: The battery needs replacing.
        No LED is lit when the charger is connected only to the battery   ×
        Explanation: The plug has to be connected for the LED to be lit.