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profdant139's avatar
profdant139
Explorer II
Nov 25, 2020

Battery failure puzzle: voltage good, little power

I have (or had!) two five year old group 31 NAPA deep cycle marine batteries, rated at 110 amp/hours each. They were not hooked up in parallel or series -- I use one at a time, swapping them out as n...
gkainz's avatar
gkainz
Explorer
Nov 26, 2020
Unless you don't have the physical room for both batteries, why not install a simple battery switch with A, B, A+B, Off positions and then just "twist the switch"?
Murphy (at least the one that lives with me) would say I would be switching batteries at 2am ... always!

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