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teksonic
teksonic

Posted: Thu Jul 31, 2008 12:36pm

Post Subject: Battery Banks

In the July issue of Canal Boat, Tony Brooks shows a picture of a battery bank of 6 batteries. All the negatives are connected together and all the positives are connected together, but there are also both neg and pos 'looping' connections between battery 1 and 3, battery 2 and 4, battery 3 and 5 and finally battery 4 and 6. Can you please tell me why these extra 'looping' cables are there? Duncan Caine

Tony-B
Tony-B

Posted: Thu Jul 31, 2008 1:27pm

Post Subject: Battery Banks

If you look at Howard Twigg's question you will see the answer. Basically its a library picture selected by the magazine who do not have the technical knowledge to evaluate it. Those loops, I suppose, are an attempt to minimise the voltdrop along the cables so that each batter gets exactly the same charging voltage and also feeds via the same resistance. The correct way to do it is to ensure the connecting cables are thick enough to give minimal voltdrop and then connect the positive lead to one end of the bank and the negative to the other. Although correct not so many boats are wired like this so oddities as shown in the picture keep cropping up. Tony Brooks

teksonic
teksonic

Posted: Thu Jul 31, 2008 2:06pm

Post Subject: Battery Banks

Thanks Tony

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