Hi There,
I too have observed that charging from 99% to 100% does take around 25-30 min. This could be a WP issue (Not sure and definitely not a pleasant customer experience). But the discharging from 100% to 99% happens so quick that even if not used for 15 min, it comes down to 99%-98%. I highly doubt it to be a normal behavior. But never the less, I do get more than a day of battery life with average day to day work life usage which is good as compared to my past Android experience...
Anyone has any update on this, pls do let us know...
-- Thanks!