I sent my P4 Pro controller in for service, twice, because the controller would not take a charge. First time, the battery was replaced and then returned ($190.). Battery ran down and would not take a charge. Returned for repair and the battery was replaced again. Also, the main board was ‘flowed’. Apparently this a common problem with the controllers. Haven’t had enough use to confirm the problem is fixed. I watched YouTube videos on the procedure to ‘flow’ the main board but didn’t feel comfortable doing it myself.