Help with dual battery wiring




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  1. #1
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    Default Help with dual battery wiring

    Hi Gents could somebody please help me out. What is this in the pic attached I think it's a solenoid of sorts. I bought my bakkie with it already installed and it leads to a female Anderson plug on the load body in the van. If somebody could tell me what it is and how it works that would be great! Thanks.
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  2. #2
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    Default Re: Help with dual battery wiring

    It is a Cole Hersee solenoid - http://colehersee.com.au/switches/solenoids/

    It disconnects your main battery from the load in the back. Typically operated via a signal from the ignition.

  3. #3
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    Default Re: Help with dual battery wiring

    Yes, as far as I know it prevents any load on the auxiliary batteries in the back from drawing power from your starter motor in the engine bay while allowing the alternator to charge the auxiliary batteries in the back (or trailer etc.)
    Answering the call of the wild is just so much beter than answering the telephone.
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  4. #4
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    Default Re: Help with dual battery wiring

    http://www.nationalluna.com/intelsol.htm

    above explains, same thing
    Lusted for a Landy but the Pajero was sexier and bigger in the right departments, just like my Missus.

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    1998 Blister Fender Pajero 3500 24V (PAJ) (Sold)

  5. #5
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    Default Re: Help with dual battery wiring

    Ok thanks. So if I connect it to my second battery as well as my solar controller will the alternator damage my solar controller in any way when I drive the bakkie and charge the battery? Or should I diconnect my solar controller. Also does the solenoid stop my fridge from drawing power from the crank battery?

  6. #6
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    Default Re: Help with dual battery wiring

    Shari, you have asked five questions at once, you sound like my MIL

    What you see is a feed with a switch in between. You have your crank battery, that feeds to the solenoid whose job it is to feed the aux battery and provide a disconnect between the crank and aux.

    The solar controller should be connected to the aux battery only and should only be fed from a solar panel.

    Please go here and do some homework before you blow us all up

    http://www.4x4community.co.za/forum/...ry-for-camping
    Lusted for a Landy but the Pajero was sexier and bigger in the right departments, just like my Missus.

    2004 Gen 3. 3.8i petrol V6 (PAJTU)
    1998 Blister Fender Pajero 3500 24V (PAJ) (Sold)

  7. #7
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    Default Re: Help with dual battery wiring

    My solar controller is permanently connected to the aux battery and has been for a long time without any problems at all.
    The aux battery is permanently connected via the solenoid to the alternator. Also no problem.
    I don't think you have any reason for concern.
    Answering the call of the wild is just so much beter than answering the telephone.
    ISUZU KB 280 DT LE NOW POWERED BY THIS AMAZING COMMUNITY
    Modified Glider Hunter trailer fitted with RTT.
    Platkar = Chevy Spark 1.2

  8. #8
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    Default Re: Help with dual battery wiring

    Just completed my first weekend of Solar power. Mine is connected as per Peter.
    No problems.
    # 5 Mitsubishi Pajero GLS 2015
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  9. #9
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    Default Re: Help with dual battery wiring

    Thanks for all the help guys.

  10. #10
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    Default Re: Help with dual battery wiring

    My solar controller is connected to my Aux directly

    My feed is into an NL powerpack directly from the crank which has the solenoid inside.
    Lusted for a Landy but the Pajero was sexier and bigger in the right departments, just like my Missus.

    2004 Gen 3. 3.8i petrol V6 (PAJTU)
    1998 Blister Fender Pajero 3500 24V (PAJ) (Sold)

  11. #11
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    Default Re: Help with dual battery wiring

    Quote Originally Posted by Sharl View Post
    Ok thanks. So if I connect it to my second battery as well as my solar controller will the alternator damage my solar controller in any way when I drive the bakkie and charge the battery?
    NO
    Or should I diconnect my solar controller.

    NO

    Also does the solenoid stop my fridge from drawing power from the crank battery?
    No the solenoid stops the crank from drawing from the aux. If the fridge was connected to the crank without an aux, the solenoid would do nothing, but check your fridge to see if it has a setting, usually low, medium, high to prevent battery drain.

    You could run your fridge from the female BH in the load bin off the crank, or you could run it from the aux and just dedicate the BH to feed the Aux battery.
    Lusted for a Landy but the Pajero was sexier and bigger in the right departments, just like my Missus.

    2004 Gen 3. 3.8i petrol V6 (PAJTU)
    1998 Blister Fender Pajero 3500 24V (PAJ) (Sold)

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