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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Also, I presume the batteries would be discharged evenly and should be hooked up in parallel. Any reason to have them swap positions every so often?
This is the whole issue with batteries in the same circuit but in different locations, the discharge and charge will be unequal unless large cable is used.
FWIW, I have two banks of batteries and one bank is located 6' from the distribution and charging location. The other bank is within 1'. I chose to use 1/0 cable for the farther location and all is functioning correctly.
If you only use small draw devices like lights and water pumps, etc. you can get by with smaller wire. You will also need to budget time for charging so that both batteries get an equal charge.
There is no reason I can think of to swap locations if both batteries are the same.
Edit: In this Northstar Laredo, two batteries are located next to each other:
If it's at all possible to locate your batteries in the same compartment, it would be the most advantageous. Maybe it's possible to build a shelf to accommodate the second battery?
