ok was out flying the other day when all of a sudden my p2v fell out of the sky, looked at fvp monitor and it came up 'lost connection'. It was a fully charged battery all pre-flight checks was carried out i.e. compass calibration, homelock was set, set in GPS mode (nazam). Everything was ok for the first minute then it just fell for no reason. Had to have new casing, props and found out the camera cable had a broken wire, maybe caused by the crash but not sure. So new casing fitted then put battery in to test and no lights come on at all but power, now getting wifi and full camera tilt control, but no green and red lights. I've tried a different battery and still no green or red lights, so plugged it into the pc, went to dji assistant software, which is now saying non-dji batterys (which they are). Tried two more dji batterys all say the same thing non-dji battery. At one point I did have four red lights reading error. I have check all wiring and connections and everything is solid. I don't have a clue now, help needed.