Forum Discussion

KenNTennessee's avatar
KenNTennessee
Explorer
Mar 15, 2014

Is it okay to link two batteries of unequal size?

We just bought a new travel trailer and it came with a dealer installed new 24MS battery, which does not have enough capacity for us as we do dry camping up to three days at a time. I am going to ins...
BFL13's avatar
BFL13
Explorer II
Mar 15, 2014
Isn't the MS a marine "starting" battery? You don't want to use that for your Rving, which calls for a "deep cycle" battery, but many have the hybrid deep cycle/starting type at least (such as that 27DC)

If that is a starting battery, then your dealer cheated you on the battery.

Anyway, going back to the question, yes you can parallel the same kind of batteries even if they have different capacities, such as a 24DC with a 27DC, as long as they are nearly the same age, and usage.

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