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Hi, I have a 12v solar panel/controller/battery system in two buildings about 7 meters apart from each other and there is a 2 x 6 mm2 (AWG 9) cable between the buildings. I would like to connect the systems together so that both panels (facing different directions) could charge both batteries.
Is it OK if I use the cable to connect the batteries in parallel, i.e., to use one wire of the cable to connect + terminals of the two batteries and the other wire to connect - terminals of the two batteries?
Is it OK if I use the cable to connect the batteries in parallel, i.e., to use one wire of the cable to connect + terminals of the two batteries and the other wire to connect - terminals of the two batteries?