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Thread: best way to manage 3 batteries?

  1. #1
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    best way to manage 3 batteries?

    I have an auxiliary battery in the Defender which is managed by a fairly old Pirhana dual-battery system. I'm now adding a camper with it's own battery running a fridge, HWS, diesel heater and lights. I plan on continuing to run the Engel in the vehicle as well as the camper's own fridge. I'm wondering how to keep the camper battery charged whilst travelling- I can hook up solar when parked.
    I have an Anderson plug at the rear of the vehicle which is connected to the auxiliary battery and there is an Anderson plug on the camper connected to the onboard battery. Would it be sufficient to connect the camper into the existing auxiliary system, or do I need some additional management gadget? Aux and camper batteries are both AGM.

  2. #2
    Narangga's Avatar
    Narangga is offline TopicToaster Silver Subscriber
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    I used a Traxide kit to handle that for me and it gave me an additional outlet inside the vehicle too.
    Cheers, Dale
    PIC - It comes with the Territory

    'The D3' - 2006 TDV6 HSE
    2008 Kimberley Kamper Sports RV
    Previously Enjoyed:
    2002 Adventure Offroad Campers 'Cape York'
    2000 D2 Td5 - plus!
    1997 Defender 110 Wagon - fully carpeted

  3. #3
    Join Date
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    I've got two leisure batteries that are wired parallel that go through a dc-dc charger, they are fairly close together and the cables would be no more than 400mm long.

    I'm not sure what the maximum distance between batteries would be before they'd be affected, maybe ask an auto electrician

  4. #4
    Join Date
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    If its all AGM dont overthink it...

    My previous configuration in the D4:
    - Primary AGM
    through Traxide USI160
    - 2x AGM underbonnet aux
    through Anderson connector to Van
    - 2x AGM 110ah house batteries

    And guess what, it worked perfectly.

  5. #5
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    Don’t need to do anything….just plug the trailer in.

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