I took my Quad out to Sand Key park to fly this weekend and almost had a total loss. I love to fly it out over the water and track Jet Skis or moving boats. I was flying as normal, probably 100 or so yards out over the water and decided it was time to bring it back home. Flipped the button back to home lock, pulled the joystick towards me and it seemed to be limping back towards me. As it got closer I noticed it was spinning and acting erratic so I switched back to control and piloted it back. It still was wobbly and spinning as I landed. When it was on the ground I noticed the battery door was open and the battery was half hanging out. Needless to say it was scary watching it flutter over the ocean. Sad to say, had it dropped into the Ocean I would have wiped a tear away, drove home, got on Amazon and ordered another.