The controller works perfectly and customer support and the warehouse shipping people did a fantastic job trying to get it to us quickly because of the delays caused by the holidays. We used it to replace a J2CB-001which is a CONTOLLER and BATTERY CHARGER that is no longer available. You CAN NOT charge the battery with the controller unit only so, depending on your situation, you may also have to order a separate charger. The only thing wrong with our J2CB-001 is that you could no longer lower the lift down so we are able to reattach and charge when needed. It is a bit inconvenient to have to do it that way, but it works and we continue to use our 25 year old Electric Invacare lift.