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Compass Marine How To | all galleries >> Welcome To >> Installing A Marine Battery Charger > Parallel Batteries - Incorrect Wiring
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Parallel Batteries - Incorrect Wiring

I have used my battery tester many times in scenarios like this and in every example I see the bank unevenly balanced and the batteries show it under testing. I have a battery tester than can show me the differences in a bank of batteries wired like this, and it does matter. Do not just connect your charge sources or loads to one end of a bank.

But, you don't need to take my word for it this is what Odyssey Battery (EnerSys) has to say about properly connecting batteries in parallel:


"Typically the positive and negative leads to the load are taken from the same battery; usually the leads from the first battery are used. This is not a good practice. Instead, a better technique to connect the load is to take the positive lead from one end of the pack (the first or last battery) and the negative lead from the other end of the pack."

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