This may have been addressed before. I am completing a 57 km shoreline assessment for a client, which means I am flying over water 100% of the time, taking off and landing on a boat. Quite a daunting affair, but I am getting pretty comfortable at it and the video downlink definitely helps. Anyways, I was clipping along at a pretty good rate and was about to bring it in when it just stops moving forward, it moves in every direction except forward. So my anxiety level raises slightly but manage to bring it back out to the water. As I'm nearing the boat I notice I'm getting flashing rear red lights, alternating with the normal green... But my battery was reading 60%.. As it gets closer it triggers auto-descent. Luckily I have 3.04 so I can fight it and get it back to the boat... Do you think a connection problem? Bad battery? Other error?