Well, after a week of trouble free flying, I tried to fly through a path in a wooded area...I underestimated a low branch and...Flip! Not to bad, it fell about 6 - 7 feet. Strange, its a phantom 2 and the battery was ejected? I plugged the battery back in, had some red lights. After awhile they seemed to go away and flash green. Some questions--- 1. Is it normal for the battery to be ejected? 2. What were the red lights?(i'm in naza mode) 3. I was flying in a field and got a gps lock. In the forest the quad felt different...is this because of loss of GPS? The lights were still green. 4. The phantom has dust all over it from the crash. whats the bwest way to clean it 5. anything I should check before next flight?