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Unread 08-10-2014, 09:24 AM   #1
Not Yet Wild
Join Date: Aug 2014
Posts: 1
Default battery charging issues

i have a 2002 club car. Its always ran fine and i do a lot of work myself. I had a battery go bad and my mechanic gave me another one to use while my new one was ordered. It was fine for about a week but then would not charge all the bars on my battery reader. I even came to see that after It had been charging all night long it was still kicked on charging the next morning but the meter bars never moved. I unplugged to research and plugged back up a day later and it charged fine. Then same thing, will not charge all the way. I now have a new battery and they others checked out ok, charger as well, but still will not charge. any suggestions? is it OBC? is there a simply way to bypass that and charge cart?
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Unread 08-10-2014, 10:11 AM   #2
Dazed & Confused
crash test dummy's Avatar
Club Car
Join Date: Nov 2011
Location: Z-HELLS FL
Posts: 14,409
Default Re: battery charging issues

bar meters are not very reliable use a DVM to check battery pack voltage

try resetting the OBC

Resetting the Club Car On board computer - reset the OBC

To reset the OBC the following must be done in this order:

If no Tow/Run Switch then skip that step

• Key Switch to Off
• Forward/Reverse to Neutral
• Tow/Run Switch to Tow
• Disconnect the Battery NEGATIVE (–) wire from the Battery Minus terminal on the battery pack.
• Put the Tow/Run to Run
• Forward/Reverse Switch to Reverse
• Key Switch to On
• Press the throttle pedal down (hold it to the floor)

The reverse buzzer will sound (sometimes) and go off in about 30 seconds.
Leave the cart like that for 5 min to cause the OBC to reset.
After 5 min release the throttle pedal

To reconnect the OBC back into the system:
• Key Switch to Off
• Forward/Reverse Switch to Neutral
• Tow/Run switch to Tow
• Reconnect the Batt – wire to the battery minus
terminal on the battery pack.
• Tow/Run switch to Run
• Key Switch to ON

if that doses not work then do by pass

to by pass OCB
DO AT YOUR OWN RISK.…do not attempt unless you are familiar with electricity and electronics!
There are two ways to force the charger to turn on regardless of the OBC.

The first method is to disconnect the cart’s gray wire at the fuse near the charger receptacle. Then using a jumper wire, connect the receptacle side of the fused connector to the cart’s negative battery terminal. This will energize the charger’s 48V relay. If the charger doesn’t come on, it could be bad connections, wiring or charger relay.

The second method is to open the charger and remove the 120V wires from the relay and jump these together. This totally bypasses the relay and the OBC wire.

(If charger comes on but the charger ammeter shows 0 amps, check the fuse at the charging receptacle under the clear plastic cover.)

Both of these methods should both be temporary measures for troubleshooting, or as an emergency method of charging the batteries when they have been discharged so far that the OBC will not charge them.

The OBC provides the optimum method of charging the cart’s batteries. If the OBC is bad, it should be replaced
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