Since 2 days my Forerunner 935 drains from 100% to 1% within 8 hours or so without starting any activity. Tried a software update to 8.0 ...didn't help. Tried a factory reset (and restored settings.fit and .fit Files from /Sports/) and it didn't help. Went back to standard watchface without any improvement. Anyone else experiencing this? Is my battery dieing after less than 6 months of light use?
Had the same problem with my Fenix3 years ago. Reason was a *.bak-File in the Garmin-Directory which shouldn't be there. Deleting this file did the job...
