Just a wee querie....

Discussion in 'Motorhome Chat' started by con-tiki, Mar 28, 2012.

  1. con-tiki

    con-tiki Funster

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    I have just bought a new 125ah leisure battery, as the leisure battery I have in use is 75ah. Am I right in thinking that I shouldn't connect the 2 in parallel (parallel....makes me think of the Austrian ski school....lol ) Sorry the mind just wandered a bit....Not very good with electrikery....

    Shirl
     
  2. Jim

    Jim Ringleader

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    Hi Shirl, I point people to this article, it's great http://www.marxrv.com/12volt/12volt.htm
     
  3. pappajohn

    pappajohn Funster Life Member

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    Hi Shirl.

    providing your 75ah battery is still in good condition there's no reason not to connect the 125ah to it in parallel.
    connecting in parallel will produce just one large 200ah battery.
    if the original is faulty in any way the pair will not fully charge and discharge quickly, even though the 125ah is new.

    connected in series will undercharge a 125ah and at the same time will overcharge the 75ah and would need 24v charger anyway.
     
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  4. Incamania

    Incamania Funster

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    Paralleling 2 x 12 volt Batteries

    Hi
    Last year I went down this route and also posted a note on this forum, if you visit Kemo Germany at http://www.kemo-electronics.eu they have a small unit which allows same voltage batteries of differing capacities to be safely connected to a single source. There's a technical info sheet to explain all.
    I sent for one, cost about £15 if I remember correctly. They also have an efficient english Q & A email response.
    The unit is called a 2 ACCUMULATOR CHARGER.
    Hope this helps
    Incamania
     
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  5. spannermanwigan

    spannermanwigan Read Only Funster

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