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Thread: Charging Battery in Camper

  1. #1
    Join Date
    Jul 2006
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    Charging Battery in Camper

    I need some advice with multiple batteries. We're going away on the 27th and we share a camper with the father in law. He has since put a battery in the trailer for lights etc... How can I keep this battery charged?

    I have an old Pirahna Dual batt controller under the bonnet and an aux battery. WE also have a fridge, inverter and lights in the disco that run off the second battery.

    So how can I cheaply keep the camper charged, would putting the two aux batts in parallel work, maybe with a diode to stop it back feeding into the cars aux batt?

    Any Thoughts???

  2. #2
    Join Date
    Dec 2006
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    Narrogin WA
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    What about a solar panel? Ask at camping stores, or somewhere like Jaycar,

    Cheers Charlie

  3. #3
    Join Date
    Jan 1970
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    South Yundreup,WA.
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    Drivesafe does just such a kit, to charge off the car battery while driving. It is on my wish list.
    Other options are solar panels.
    It all depends what you want to run off of it.
    Cheers
    CraigE
    2011 Discovery 4 TDV6
    2009 DRZ400E Suzuki
    1956 & 1961 P4 Rover (project)
    1976 SS Torana (project - all cash donations or parts accepted)
    2003 WK Holden Statesman
    Departed
    2000 Defender Extreme: Shrek (but only to son)
    84 RR (Gone) 97 Tdi Disco (Gone)
    98 Ducati 900SS Gone & Missed

    Facta Non Verba

  4. #4
    Join Date
    Jan 1970
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    Free Again Thanks Dan
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    Quick fix one of them cheap 2 stroke 240v generators , some have 12v chargers as well get them from supercrap or bunnings
    $99 BARGAINS

  5. #5
    Join Date
    Jan 2007
    Location
    Perth, WA
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    Just been through the exact same thing myself, and have fitted an 80Ah deep cycle in the new camper trailer, plus have dual battery setups in both LR's.

    In the Defender, I have an SC80, which has two outputs, so one can charge the aux battery and the other can run to the back and charge the battery in the trailer.

    In the D3, I have a single output SC40 and an aux battery that it charges, which will run the fridge and a few sockets when I finish adding the wiring. While I could parallel the trailer battery off of this, all that's going to do is equalise both batteries to the lowest level until they are charged again....so I'm just not going to bother charging the trailer from the D3 for now, and if I really need to charge form it, I'll probably swap the SC40 for another SC80 in the future.

    However, neither will help charge the battery in the trailer when parked, and as this is where the trailer will spend most of it's time, I went with a solar setup to try and run everything during the day plus put some charge back in the battery. In addition, I'll keep a cheap generator in case we either get no sun or my maths turn out to be wrong and I still use more power than the panels make! A point worth mentioning though, is that you need to recharge deep cycle batteries properly, so unless the 12v output on the genny is designed to do this, you'd be better running the 240v output through a decent smart charger.

    After next week, I'll know if I made all the right choices!
    Jeff

    1994 300TDi Defender
    2010 TDV8 RRS

  6. #6
    Join Date
    Jan 1970
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    Queensland
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    Hi stubee, a simple but effective way to charge the camper trailer battery is to get a small 240vac battery charger and a 12v to 240vac inverter.

    When you pull up at night, connect the inverter to your auxiliary battery under the bonnet and run an ordinary 240vac extension cord from the inverter to the battery charger located near the camper trailer battery and let it charge over night.

    Disconnect everything in the morning and your auxiliary battery will charge up while your driving, ready for the next night.

    This set up is cheap, QUIET, and you can use all the gear for other jobs

    Cheers

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