Thanks ill give this a try if its is any help the lift has gauge to tell battery life and this is not working either the it is charged but gauge is showing no life if I hook the battery to a different lift it says it is fully charged. I will try a another battery in the lift to see if it works but it is odd to me that the battery gauge would go out at the same time I am having this issue. has a Curtis 933 control with battery gauge. my meter shows 39v with no load ill try driving with it hooked up.