Does a pontoon boat need 2 batteries if only starting, lights, radio, and bait aerator are used?
I would like to use one for starting , the other for accessories.” NO. A second battery is not a requirement. Thousands of pontoon boats are built every year with a single battery, but the first electrical system upgrade is almost always a second battery. “Why have a selector switch with a VSR? Where are batteries grounded on a pontoon?” I would not recommend a selector switch combined with VSR. It is too easy to put the switch in the BOTH position and defeat the purpose of the VSR. I would use a marine On/Off switch to provide a master disconnect for the system. When the switch is OFF, the system will not discharge. Never use the metal frame of your pontoon boat as the ground. Connect all grounds for the boat at a common ground buss near your battery(s) and run individual cables from the buss to each battery. “Last suggestion, could it be possible for you to have simple wiring diagrams for connecting all of the electrical devices that you mention, as I said before not too familiar wit
