Charging 12V Battery?

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This topic contains 6 replies, has 4 voices, and was last updated by  Mo 3 months, 1 week ago.

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  • #30943

    Fred_Bristol
    Participant

    A recent edition of Transport Evolved dealt with charging the 12V battery of a Nissan Leaf from an external 12V charger. Has anybody tried this with a Renault Zoe? I imagine Renault wouldn’t approve.
    Fred

    #30944

    Mo
    Participant

    I had ‘check electrical system’ message on dash, disconnected negative post of battery and wrapped in plastic bag then charged as any 12V battery, no problem since.
    You do need to leave car door open while charging or it may lock (and alarm go off)
    That happened to me, I had to use the key located in the keycard to open the doors.

    #30946

    sandy
    Participant

    I recently bought a smart charger to revive my classic Minis battery, I’ve been thinking if it was worth disconnecting the Zoe 12v and giving it a nice healthy refresh but wondered if it was even worth it as CanZE shows it’s a healthy 13.1v all the time.

    #30950

    Fred_Bristol
    Participant

    First, thanks for your responses.

    What put me off charging the 12V battery when the orange spanner came up again was not knowing whether:
    a) disconnecting the 12V battery would cause problems with the computer or alarm systems
    or
    b) leaving the 12V battery connected and using my CTek charger (which is supposed to be safe with electronic systems) would cause problems.

    From what Mo says, disconnecting the battery does not cause problems if you take his precautions.

    Anybody else tried it?

    #30952

    Mo
    Participant

    The question of charging the 12v was raised by members on Renaut zoe owners club site, i posted same procedure there and others used it successfully.
    You do hear the computers start up when you reconnect after charging the 12v, I am sure my heating started working better as if the ‘reboot’ had sorted out an issue.

    Not advisable to charge while battery is left fully connected (ie not disconnecting the Negative terminal) apparently Zoe can wake and attempt to charge from 400v battery at any time, who knows what that would result in?

    #30960

    Trevor Larkum
    Keymaster

    who knows what that would result in?

    Entertainment?

    #30961

    Mo
    Participant

    who knows what that would result in?

    Entertainment?

    Of the Firework kind yeah 🙂

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