I went to take the boat out today and both of my batteries were dead. I have a dual battery setup w/ perko switch and both batteries were at 1.6v - no biggie i thought, i'll just charge these up and no prob - well I unhook the batteries and just for giggles I checked the voltage unhooked - main battery went up to 3.4v and 2nd battery went up to 4.8v - so since ALL of my switches and accessories were off, I'm wondering why there was still a draw on the batteries that made them both show 1.6v when they were hooked up? Could something be shorted out? For now I have both batteries unhooked and charging, just looking to you guys to see if anyone can shed some light on this 'mystery draw' i'm having (or imagining) while I wait for the batteries to charge. Any help/advice is greatly appreciated as always.