took my p3p for its second flight, everything fired up well and at about 100ft up I get a battery error! I bring the drone down, by now I'm freaking out as I'm bringing it down and hoping nothing bad will occur. luckily I brought it down in one piece but the problem was that the battery was not all the way in! I had done a check before flight and from what I can remember it was all the way in. Perhaps not and the vibrations from the motor loosened the battery more. Maybe this info can help others. I'm just really glad my drone is still in one piece.