what gauge wire between two batteries?
I'm adding a second AGM battery to my truck camper. It's going to be under the bench seat in the back on the other side from the 1st battery. So their distance will be about at least 10-12 feet fro...
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Balanced wiring provides for the longest battery life for both charging and discharging. The current battery will supply or charge the most amps. This is due to the higher wire resistance to the remote battery. For your application balanced wiring doesn't seem practical so just use the largest wire possible.
