I took off in a Cessna in Hawaii. 60 knots full flaps. Set my alarm for 5 hours while it flew a diagnal from the northwest corner to the southeast corner. Woke up. Turned it around and went back to sleep. landed it 10 hours after take off. It was plugged in all night on night mode, sound way down and dimmed. I was still at 100% battery when I wole up. If I left the screen on bright and day mode I would probably not of made it. Wanted to see how the iPad would handle that long of flight for global. Worked great.