I moved my battery wires and connector outside of the body because it was such a pain using my 2700 MAh battery otherwise. Since the battery has been sitting in the battery compartment for several days, I didn't think to check the battery door. It isn't hard to figure out what happened. The door wasn't properly latched, the battery slid out and became disconnected and the quad fell about 30 or 40 feet. It broke one of my propeller guards, which I epoxied back together. I wish my GoPro had been recording.