My 1990 Yamaha G2 36 volt electric golf cart rear wheels will turn fine when the rear of the cart is jacked up, but when the weight is on the wheels then it barely moves. I have checked all of my batteries and I have cleaned all wires, terminals and connections on all the batteries and motor. My voltage is as follows:
All load tests were for 10 seconds.
Battery pack surface charge: 38.60 volts
Battery pack surface charge under load: 36.10 volts
Battery 1: 6.38 volts
Battery 1 under load: 6.10 volts
Battery 2: 6.41 volts
Battery 2 under load: 6.12 volts
Battery 3: 6.43 volts
Battery 3 under load: 6.13
Battery 4: 6.29 volts
Battery 4 under load: 5.98 volts
Battery 5: 6.44 volts
Battery 5 under load: 6.13 volts
Battery 6: 6.36 volts
Battery 6 under load: 6.03 volts
What can be my problem? Any advice or suggestions will be greatly appreciated!
All load tests were for 10 seconds.
Battery pack surface charge: 38.60 volts
Battery pack surface charge under load: 36.10 volts
Battery 1: 6.38 volts
Battery 1 under load: 6.10 volts
Battery 2: 6.41 volts
Battery 2 under load: 6.12 volts
Battery 3: 6.43 volts
Battery 3 under load: 6.13
Battery 4: 6.29 volts
Battery 4 under load: 5.98 volts
Battery 5: 6.44 volts
Battery 5 under load: 6.13 volts
Battery 6: 6.36 volts
Battery 6 under load: 6.03 volts
What can be my problem? Any advice or suggestions will be greatly appreciated!