Same for me- was experiencing 20% drain per hour on 10.1, upgraded to 10.2 and still at 100% an hour later. Also allowed me to charge to 100% which 10.1 wasn’t allowing.

https://preview.redd.it/f9bk1r8jfmwb1.jpeg?width=410&format=pjpg&auto=webp&s=478506a2b4c64b23dd9bcec529cc5945ed705712

I’ve got an Ultra 2 and experiencing bad battery drain- also have no idea what is going on with the charging graph thingy! Any one else getting this?