It would be interesting to see if the battery display is firmware problem or battery problem.
I like to have spare batteries and swap when needed but I also have external Anker batteries (6400mah) that I can mount on monopod or anywhere else.
Also, based on what I have read and watched before I expected way better gyro, it is just decent. All default setting, Gyro ON, at 1080p 60fps video is shaky or at least not that fluent like on the videos that some Youtubes presented.
I have made some videos with Git2 on monopod (slow walk down the street with steady hand) and video is shaky, maybe not too shaky enough not to see true benefit of the gyro.
Other than that, tested at night from hand and as a dashcam and quality is not good altough I knew that before.
I will test more this week and see how it goes.
Right now, I can say that is way better than Sjcams, I also like it more than YI camera, especialy because of LCD. With Hero4 I will not compare.
Other than that, its a good deal if somebody uses it from time to time or don't want to spend 3x more for Gopro.