woodscrew
Senior Member
I have a Xantrex model xc 2524 24 volt/25 amp battery charger that seems to be overcharging. It charges a pair of 8D house batteries that are set up for 24 volts. For years when we are plugged in at the dock with the charger on the house batteries stay at a constant 27.2 volts. About three days ago they are suddenly reading 29.5 volts (on the Link 2000 panel). There is very little draw on the house batteries when docked, just LED interior lighting. For now I am turning it off until the batteries cycle down to about 24.8 volts and turning it on until they hit about 27.5 volts.That's what they do when on the hook and are running the refrigerator and running lights . The batteries have never been cycled down past about 50%, and although six years old have not been discharged even to that level very often. These are lead acid batteries which have always been kept filled to the proper level with distilled water. I do see the temp sender on the battery terminal is cracked where the wire enters the plastic housing. Maybe that's the issue? The digital display in the charger stopped working last summer after we had some reverse polarity issues at the dock which turned out to be a loose ground in the dock pedestal. Also created an over voltage spike and multiple short term power failures. Maybe the unit is giving up the ghost after that abuse?