It's time to replace the batteries in my boat and I'm trying to figure out which way to go. Right now it has two Farm & Fleet marine batteries that are cranking batteries. I'm assuming I need to go with one dedicated cranking battery and then a deep cell battery for sitting in the cove listening to the radio. I should mention I have an elaborate stereo system with two amps and I don't fish so there isn't a trolling motor. My question is how to wire in the new batteries. Right now both batteries go to a Perko switch and I can select 1, 2, or both. Do I simply make sure my stereo is wired into #2 and the starter is wired to #1? If I'm selected to #1 on the Perko switch when running the engine will the deep cell battery still charge? Just looking for a little guidance here. Thank you for taking the time to get me in the right direction. I forgot to mention I do not keep my boat in a slip and I don't have power capabilities where it is parked.