This is probably a stupid question but I don't want to screw something up. I have two 12 volt trolling batteries wired parallel...doubling the amperage but not the volts. I want to get a 2 bank battery charger to make life easier...right now I have a charger for each and unhook them after every trip to charge them. My question is...with the 2 bank charger will I still have to unhook them from each other every time I charge them? Thanks fellas!!