Batteries keep running down

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09-11-2016, 06:41 PM

HillbillyJoe

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Batteries keep running down

I have a 2006 f350 superduty 6.0l diesel and if one of the batteries are bad will it drain the good battery...had them tested and one tested good but I keep having to charge them both

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09-11-2016, 07:44 PM

Slowpoke Slim

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Yes. If you run a bad battery in parallel with a good one, the bad one will kill the good one every time. Replace the bad one, before you end up having to replace both at the same time.

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09-11-2016, 07:49 PM

Just Strokin

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You should replace both batteries at the same time even if one checks good. The only time you only replace one would be were one battery is under 6 months to one year old.

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