Bad charger, Meter, or battery???

[Golf cart guy]

On charge voltages are important here. Although the reality is the gauge is more than likely at fault and just not resetting.

[2010PDS-Joe]

On the charger voltage is 40.3

[kernal]

Originally Posted by 2010PDS-Joe

On the charger voltage is 40.3

The charger is looking for 44-45 volts as the peak for a 36v pack.

If the battery meter you have is a Curtis model 906, it is looking for about 42.3v for 6 continuous minutes to reset to full. This meter is very common to EZGO carts and likely says EZGO on the meter. So the charger is running at a relatively high current for longer than it should because the the pack voltage is not rising as it should including not enough to reset the meter. This is a sign of failing batteries. Considering what you know about the history of the cart, the batteries probably started life as a quality, matched pack. They likely have been reasonably well maintained but used heavily. A high cycle count has just worn them out but they are all six going down together. That's my best guess with the information given.

[cgtech]

Originally Posted by kernal

The charger is looking for 44-45 volts as the peak for a 36v pack.

If the battery meter you have is a Curtis model 906, it is looking for about 42.3v for 6 continuous minutes to reset to full. This meter is very common to EZGO carts and likely says EZGO on the meter. So the charger is running at a relatively high current for longer than it should because the the pack voltage is not rising as it should including not enough to reset the meter. This is a sign of failing batteries. Considering what you know about the history of the cart, the batteries probably started life as a quality, matched pack. They likely have been reasonably well maintained but used heavily. A high cycle count has just worn them out but they are all six going down together. That's my best guess with the information given.

I agree... We went full circle back to post #2.