I was flying my P3P yesterday and after an uneventful flight, I changed the battery with a second battery and flew until approximately 1/4 of the battery was used. It was a windy day and I had enough so I then landed the P3, powered off the controller AND P3 and placed it in my Go Pro Professional case leaving the battery in the P3 (clearly off though). A few hours later, I opened the case and the bird was extremely hot to the touch and the battery was as well. A coworker was in the room and I let them feel the extreme heat as well. I carefully checked to see if the unit was left on and it was not as my coworker witnessed as well. I'm currently updated to the latest firmware and have not experienced any other type of problem. I'm concerned because it became dangerously hot and now I'm wondering if it caused damage to any of the circuitry or parts in the P3 let alone the status of that battery. Has anyone experience overheating batteries before? Any feedback would be most appreciative.