The Duel Pro XL charger that is in my boat is showing green lights on one side and 4 red lights on the other side. I came in from fishing Fri. plugged the charger in and today (Sat.) the lights are not the samer as usual. They usually go green about the same. There was a little corrosion on the neg. terminal could this have caused one of the batteries not to charge?
Thanks for any help.Stoner