Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
Do you have a voltmeter to check the voltage on the battery pack, and on each f the batteries? Does the charger run a full charge cycle , around 8 hours? Any one bad battery or connection will drop voltage to the cart, and will not let it have maximum power for hill.
What model Ezgo is this? RXV or TXT? Electric brake on drive motor?
I would get a cheap digital voltmeter, less than $10 at retail or auto supply, and do battery test , with unit off, and then run cart with meter attached with a set of alligator clipped jumpers and see what voltage does when driving under load condition.
48 volt , battery pack, fully charged will be around 54 volts. If this has the 6, 8 volt batteries, each will be close to 9 volts, if it has the 4, 12 volt batteries each will be over 13 volts.
Under load ,battery pack should not drop below the 48 volts.
NO, batteries do not need to be disconnected, just read from the two posts of each battery
I see question is still open, please rate to close.