Since hernia surgery in December I’ve decided at 67 years old (68 in April) I’m going to get the boat serviced at the dealership. Its a sobering reminder that age (and gut) is now going to dictate what I can do going forward. The thoughts of lifting the 60 lbs. outdrive to replace the water pump impeller just wasn’t a wise decision. Anyway, I’m having the trolling motor batteries replaced with one 24 volt lithium battery. Anyone using lithium batteries in the boating world?