Battery/hella plug /fridge issue





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  1. #1
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    Default Battery/hella plug /fridge issue

    Hi all
    Please can someone help me problem solve this issue.
    I have a 105 dual battery setup in my hilux running from front to a hella plug in the back.
    I am running a 74 liter national Luna fridge freezer.
    run it at 2 degrees and -3 respectively.
    when Iím driving the fridge seems to run fine , however when I stop for more than an hour the fridge basically stops working.
    1. New battery installed
    2. fridge recently serviced
    3. green run light stays on
    4. NO flashing fault light

    this weekend I ran the fridge using my same 12 v cable on a camping trailer and the fridge/freezer worked perfectly.

    im now lost for ideas ? Perhaps cable running from battery to hella to small ?
    why would it then run fine while driving ?

    thanks in advance

  2. #2
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    Default Re: Battery/hella plug /fridge issue

    Presume the second battery is in the engine bay?

    Does the fridge have a low power cut off and what is it on? If its on high, then it will cut fairly early to protect that battery. Change it to medium or even low so long as that second battery is oslated from starter.
    2007 Jeep Grand Cherokee 3.0 CRD Overland - GDE Eco Tune + 2" Lift on 265/70/17 BFG KO2's
    2017 Venter Savuti + Tentco Jnr, Dometic CF50 Fridge + Snomaster Battery Box
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  3. #3
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    Default Re: Battery/hella plug /fridge issue

    Check the Hella plug female connection. With vibration, the little 'jaws' on the inside lose their grip.
    Be careful, don't stick a screwdriver in there while it is powered up.
    Then, replace with Brad Harrison plugs.

    Hilux 3.0 D4D "Goldilocks" - Rigged for overlanding
    ORRA Callsign: X130
    Passionate about alternative energy

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  5. #4
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    Default Re: Battery/hella plug /fridge issue

    The system can loose quite a bit of power on bad connections and one thing to remember with dc is wires to be as thick as possible and short as possible.

  6. #5
    Join Date
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    Default Re: Battery/hella plug /fridge issue

    When engine is on your system volts is higher than on engine off and battery alone.

  7. #6
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    Default Re: Battery/hella plug /fridge issue

    Can you measure the supply when engine is running, and when the fridge stops working?

  8. #7
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    Default Re: Battery/hella plug /fridge issue

    Quote Originally Posted by Quiksilver View Post
    Presume the second battery is in the engine bay?

    Does the fridge have a low power cut off and what is it on? If its on high, then it will cut fairly early to protect that battery. Change it to medium or even low so long as that second battery is oslated from starter.
    Thanks. Yes I have tried medium and low settings to no avail

  9. #8
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    Default Re: Battery/hella plug /fridge issue

    Quote Originally Posted by K2l2h2r1 View Post
    When engine is on your system volts is higher than on engine off and battery alone.
    Thank you

  10. #9
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    Default Re: Battery/hella plug /fridge issue

    Quote Originally Posted by K2l2h2r1 View Post
    The system can loose quite a bit of power on bad connections and one thing to remember with dc is wires to be as thick as possible and short as possible.
    Thank you

  11. #10
    Join Date
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    Default Re: Battery/hella plug /fridge issue

    Quote Originally Posted by Subok View Post
    Check the Hella plug female connection. With vibration, the little 'jaws' on the inside lose their grip.
    Be careful, don't stick a screwdriver in there while it is powered up.
    Then, replace with Brad Harrison plugs.
    Thanks.

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