My electric cart not working

[Rich Allen]

Just picked up a golf cart from a friend . EZGO electric. Does not run correctly. Symptoms are weak batteries. I checked voltage from the neg tp pos terminals from the furthest batteries. Had 30vdc. Jacked cart up and checked from neg terminal to each high voltage terminal on the solenoids it was starting at around 6 at the first one and went up to 25 volts at the last one.

Any help would be nice.

Thanks

[cgtech]

CHARGE THE BATTERIES! They are WAY low. Check their water levels first, fill to "just above the plates". Then, charge them 5 more times. (drive to the end of your street then plug it in again, repeat 5 times). batteries are neglected, charge them again. you might not have much left to work with with your batteries, cycle them a few times

[Revolution]

I second the statements of Cgtech, 30 volts is dead dead. You might revive them with lots of charging. DO NOT OVER FILL, for the first few rounds watch the levels closely and only use distilled water always.

[Rich Allen]

ok thanks . what voltage should i be getting? I thought with 6 6volt batteries it should be 36 volts. Im i missing something?

[Volt_Ampere]

You need more resolution. 36V is a nominal but fully charged it's larger than that.

[teecro]

Originally Posted by Rich Allen

ok thanks . what voltage should i be getting? I thought with 6 6volt batteries it should be 36 volts. Im i missing something?

A fully charged set of battery in 36 volt configuration in 100 % tip top condition should read 36.2 to 36.4 volts.... At 36.3 volts you are at 50 % state of charge and that is considered the lowest you allow your pack voltage before recharging and this shortens their lives.... At 10 % remaining voltage would still be 34.5 volts... So 30 volts is dead dead dead....

[Rich Allen]

thanks. all the batteries were bone dry, filled them now on the charger.

[JohnnieB]

Originally Posted by Rich Allen

thanks. all the batteries were bone dry, filled them now on the charger.

Attached is a State of Charge chart.

The voltages on chart are At-Rest voltages, which means 12 hours after charger shuts of or 30 minutes after cart is driven

[scottyb]

I'm calling the battery abuse hotline
Fully charged and rested (settled)for 12 hours should net a reading of 38.2-.4. 100 minutes of operation should net a reading of 36v. This is about 50% depleted and this is where a healthy pack should be back on the charger.
But- for now do the multiple low discharge and recharge as GCT suggests until you have a healthy pack.

[Rich Allen]

Did the first charge up to 31.79 volts. On the charger again now . We shall see hope I dont need batteries