My Forerunner 945 battery level started going haywire when I tried to charge it this morning. I started to charge when the battery level was at about 50%; after half an hour, the level had only increased by about 3%.
I disconnected the watch did a reboot, now its showing about 70%. I tried charging it again, and after 5 minutes, the level shot up to 100%. I disconnected & did a hard reset, the level is now at about 80%.
This charge - disconnect - hard reset - charge again cycle was repeated a few more times. Finally as of now, the battery level has been stuck at 100% for more than 2 hours and won't change even after multiple reboots & hard resets.
Short of doing a factory reset, is there anything I can do to fix this problem?