I keep having a dead cranking battery on my crappie rig. I figured it was the battery not holding a charge, so i bought a new one end of september. This battery is connected to my lights, bilge, and two Lowrance HDS units. Also, the livewell timer. None of the switches are on. New battery was fine while i was taking it to the lake in october. It sat for a month and is stone dead. Charged it overnight and was all good again. Anyone have any input? Something is causing a drain. Switch is also off. Thinking of disconnect when not in use if i can not find the issue.