Golf Cart Batteries Fully Charged But No Power. A golf cart battery is supposed to charge and discharge and recharge again in that cycle while it last. Acid-based batteries are typically used for electric golf carts and must be recharged in order to work properly.

2 Your Golf Cart loses power very quickly. Use the multimeter across the battery posts of each golf cart battery individually. Batteries are fully charged and in good condition.
Put it away over night.
Do not leave batteries discharged for any length of time. Test with someone elses charger. The cart runs fine unless I fully accelerate which cause the cart to shut down. Batteries should be charged after each use.
