All ActivityMost RecentMost LikesSolutionsRe: Disconnecting Battery When Plugged in for long periodsI had a WFCO 8955 converter in my 2004 Outback fiver. My batteries were just 2 years old. Two 12v deep cycle marine batteries. The converter boiled them. It wouldn't go into the absorb stage. Replaced it with a PD 4655. The swap took all of an hour. Put 2. 6v golf cart batteries in. All seems well, goes through all 4 stages on its on. No over heating of wires and fans haven't come on yet.