I've got a brand new htc M8 and enjoying it immensely, but there's one thing that's worrying me. My first three or four charges were very quick--an hour or so from 60-65% but over the last few days charging has become an ordeal. I've read numerous forums and tried a number of techniques, most recently discharging to 10% then recharging (which took nearly 9 hours). I went out this morning and returned with 85% remaining. Plugged it in and Dashclock forecast three hours and twenty minutes to regain that 15%.
I'm using the charger provided, but have tried a number of others as well.Any other ideas out there?