Originally Posted by GPS
Hello. I am coming from a single battery to the dual batteries. Can someone please confirm which positive and negative terminals I hook up to charge both batteries at the same time? Thanks.
Your dual 6 Volt batteries are for all purposes a single 12 Volt battery in two pieces. The same wires (and terminals) you use to power the trailer are the same ones you use to charge with. The wire between the two batteries only
connects to the + terminal on one and the - terminal on the other. No other wires should ever be connected to those terminals. Pretend you can't see that wire and terminals and perhaps it will make more sense.