I left my GoPro Hero3 Black on my P2 for the few days and just went to download the video off of it and the battery is dead. So dead that it will not charge. With the USB plugged in it still will not let me download the files. The red lights on the GoPro light up but nothing on the screen. I will leave it plugged into the USB for a while and see if it recovers. Has anyone else had this happen to them? If so how did you fix it? I did purchase another battery and tried that and it works, so its not the GoPro it must be in the battery. Thanks for any input.