i had a guest 2 battery charger for years. i put a Dual 3 battery charger from Academy in when i changed to a 36v trolling motor and sold my guest to a friend. both are still doing fine. i do have to re-do the connections about once a year because of corrosion, but my boat hangs in slings over saltwater, so that might make the problem worse.
es le bon ton roulet