Cool idea with the solar cells. Keep us posted on how it goes Late breaking news- tried the Hero 3+ at 720P 60FPS and it recorded for 5 1/2 hours on that little lipstick battery. 22 files, 2.257Gb (19:53 minutes)/file, for a rate of 113.5Mb/minute of recording. This compares favorably the Hero 4 which sucked up 182.3Mb/Min at the same mode. Just not the camera for long duration recording. The Hero 3 does better yet but I don't have any data recorded and the camera is up at our Wisconsin office. I'm going to go buy a Hero 3 White tomorrow so I can do some testing here.