Corvette joe
New Member
Hey gang, quick question. I have 2 12v Lithium batteries hooked up in series for my trolling motor. Question is when I hook the charger up to the batteries, positive to positive, negative to negative, when I hook up the last negative to the second battery I get arcing. Can I use 1 ground for both batteries because they are hooked up in series? They seem to charge fine. Just waiting for the smart battery sense to arrive to confirm they are charging correctly. Thanks in advance