I have a 3 month old Phantom 4 Pro V2 with 3 batteries. After flying my drone for a month, I got an error message when inserting Battery 1. It said, no battery is detected, the drone can not takeoff. Please install battery properly. I was still able to use my 2 other batteries. Now, all of them have the same error warning. In spit of this, the drone starts up normally with all lights flashing, beeping sounds, and the cooling fans work. I can also rotate camera with controller. To this day, it won’t fly. Any one out there with this problem, please help. Thanks.