we just bought a parago golf cart. We bought all new batteries for the cart. we have two problems now it wont go in reverse and its losing its power in less then an hours time. When we first get on its very strong and shows no sign of issues. But within a short time it gets slow an doesnt want to go. Yesterday it did this then it had power again after we had been off of it for a few hours. And it is taking over a day to charge the 3 batteries. Can anybody help?