Author [NL] [FR] [ES] [DE] [SE] [IT] Battery charging through the 'Live" 12v Din socket!  (Read 3234 times)

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  • Offline Peds8045

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    Battery charging through the 'Live" 12v Din socket!
    on: Aug 22, 2019, 05.39 pm
    Aug 22, 2019, 05.39 pm
    I have a peculiar problem when using my CTEK MX5.0 battery charger/conditioner.  :006:

    1. Up to last week i have had a flying lead from my battery terminals to a CTEK connector. When i connect the CTEK to the flying lead it works perfectly well and i get between 13.5 and 14.2v going into the battery. I'm happy with that.

    2. I purchased a Hella/DIN plug so that i can use the 'permanently live' 12v socket on the left of the engine and do away with the flying lead on the battery. With the CTEK flying lead (no charger connected) connected to the permanently live engine 12v socket i get 12.6v out of the battery as read on my Multimeter. If i apply a charging voltage to the battery terminals at the same time, i get between 13.6 and 14.2v on the engine 12v socket.

    3. When i connect the CTEK charger through the engine 12v socket, the CTEK does not apply any power to the battery even though my multimeter shows an output at the socket of 12.6v.

    Question...Is there a diode in the engine 12v socket circuit that provides one way power only, e.g power out only? I'm satisfied that the CTEK is working correctly and the fact that i get a voltage output of 12.6v from the engine socket through the CTEK flying lead means that the lead is also fine.

    I would appreciate any help on this but if all else fails, i'll just revert to having the CTEK flying lead connected directly to the battery terminals like i did previously.  Thanks in advance.  :002:

  • Offline Coconut   gb

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    Re: Battery charging through the 'Live" 12v Din socket!
    Reply #1 on: Aug 22, 2019, 05.50 pm
    Aug 22, 2019, 05.50 pm
    I charge my Battery using that DIN Socket, so it is definitely not a "one way power only" socket.

    The only thing I can think of is to double check the polarity of the connections from your Charger
    to the Fly lead / DIN Socket connection, and if those are OK, try disconnecting the Main battery,
    and with the Charger connected to the trophy DIN Socket see if there is Voltage at the Battery Leads.

    Cheers  :821:




    Last Edit: Jan 07, 2020, 06.33 pm by Coconut

  • Offline Peds8045

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    Re: Battery charging through the 'Live" 12v Din socket!
    Reply #2 on: Aug 22, 2019, 06.05 pm
    Aug 22, 2019, 06.05 pm
    Thanks fr the swift response. The polarity is correct as the CTEK shows a red reverse Polarity LED if its the wrong way round.

    I'll try your other suggestion tomorrow.

    Thanks.

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    Re: Battery charging through the 'Live" 12v Din socket!
    Reply #3 on: Aug 22, 2019, 08.24 pm
    Aug 22, 2019, 08.24 pm
    Problem solved  :002:

    One of the recessed male pins on the CTEK connector was oxidised and not providing a good connection. I cleaned up the male and female connectors and its now working.  :152:

  • Offline earthman   gb

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    Re: Battery charging through the 'Live" 12v Din socket!
    Reply #4 on: Aug 22, 2019, 08.28 pm
    Aug 22, 2019, 08.28 pm
    Good to hear that you sorted it, I've also been using that socket via a din to ciggy socket adapter, I were going to suggest you check the contacts there.

  • Offline Coconut   gb

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    Offline Coconut

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    Re: Battery charging through the 'Live" 12v Din socket!
    Reply #5 on: Aug 22, 2019, 08.29 pm
    Aug 22, 2019, 08.29 pm
    Glad it was something relatively simple !

    Thanks for the update.  :028:

    Last Edit: Jan 07, 2020, 06.32 pm by Coconut

  • Online MartinPope   gb

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    Re: Battery charging through the 'Live" 12v Din socket!
    Reply #6 on: Feb 04, 2024, 03.11 pm
    Feb 04, 2024, 03.11 pm
    I am assuming that the socket to charge into is the one down by my left knee and not the one at the back?

  • Offline Peds8045

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    Re: Battery charging through the 'Live" 12v Din socket!
    Reply #7 on: Feb 04, 2024, 03.22 pm
    Feb 04, 2024, 03.22 pm
    Yes, thatís correct. Itís permanently live so doesnít need the ignition on.