I have a new Mavic air. I had been flying with my phone, but tried my iPad mini. I hadn't changed all of the settings to my liking yet, I was not too far away when the beeping 30% battery went off. I visually lost it for a minute, the next thing I knew was my battery said 16% and the drone decided it was landing. At 16% there was enough battery to get to my driveway. I jumped in my car and drove around the block and found it in good shape. At what percent does the Air give up returning and decide to land? I haven't heard this mentioned before.