Forum Discussion

d-mac1's avatar
d-mac1
Explorer
Oct 17, 2014

12V Battery - Connect a dual purpose with a deep cycle?

One of my 12V dual purpose batteries has a bad cell and the other is fine. I've read on here that the dual purpose aren't preferred cuz we don't need the CCA for a genny so I'd like to replace the bad...
Ductape's avatar
Ductape
Explorer
Oct 17, 2014
Bad idea. Batteries in parallel should be similar age and condition. When the older battery has a cell go dead it will drag down and kill the newer battery if you're not lucky.

If your compartment will accomodate best thing would be 2 6V GC batteries and go series.

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