I did this too. I was also been told that its because downward vision does not work well in night or dim areas. I haven't tried but I guess try turning the downward sensors off. Here is my video of trying to hover at night
I turned it the mavic on with this battery. It does say 100% then I tried to charge it again for 30 min. The led lights up and blinking from led 1 to 4 like its charging it with no charge