- Oct 27, 2018
P4pro will not fly now due to it saying battery not connected when it is. Prongs are good on ac and battery. I even switched battery’s. It done this on last 2 flights but cleared up. I still have all constant red lights. I did a firmware update and IMU calibration. I have 10 flights with this craft and now I’m get discouraged. It may be something simple or do I need to take it back for exchange? All imput is appreciated. Thanks! Kenny in Texas.