Buggies Gone Wild Golf Cart Forum - View Single Post

Fairtax4me · 08-21-2018, 08:45 AM

What year is the cart? What Charger do you have?
55V during charging is actually kinda low. Most 48v chargers are capable of bringing the pack up to 65V during charging, or more if necessary, in order to obtain a full charge. The voltage drops back down after the charger turns off and should settle to around 52-54V after 12 hours. The high voltage isn't anything to worry about.

The OBC is normally supposed to time out the charger at 16 hours. You should try resetting the OBC and charge again to make sure it turns the charger off. If it does not, the OBC failed while you were gone and is the reason why the batteries cooked dry. Fix the OBC issue before installing a new set of batteries.

If the batteries are still out-gassing after several hours they're toast. Some of the plates have arced to their respective neighbors internally and now have small areas of electrical conductivity between them. They're moving electrical current all the time and are slowly discharging themselves.

08-21-2018, 08:45 AM	#4
Fairtax4me Bonafide Nincompoop Join Date: Dec 2015 Location: Charlottesburg Va Posts: 8,987	Re: Battery Nightmares What year is the cart? What Charger do you have? 55V during charging is actually kinda low. Most 48v chargers are capable of bringing the pack up to 65V during charging, or more if necessary, in order to obtain a full charge. The voltage drops back down after the charger turns off and should settle to around 52-54V after 12 hours. The high voltage isn't anything to worry about. The OBC is normally supposed to time out the charger at 16 hours. You should try resetting the OBC and charge again to make sure it turns the charger off. If it does not, the OBC failed while you were gone and is the reason why the batteries cooked dry. Fix the OBC issue before installing a new set of batteries. If the batteries are still out-gassing after several hours they're toast. Some of the plates have arced to their respective neighbors internally and now have small areas of electrical conductivity between them. They're moving electrical current all the time and are slowly discharging themselves.