I bought my 935 in February and never had an issue with the battery until two weeks ago. During the peak of my training (summer time) I was training 13h/14h a weeks with high GPS usage and many ANT+ devices connected like HR strap, power meter, smart trainer, cadence sensor. I would charge my watch only once a week and 99% of the time it still had some battery left.
Two weeks ago, I went for a run and I was caught off guard with the battery level: it was at 10% but I knew I had charged it recently. I didn't put too much thought at the time and went for my run. 2 mi (15 minutes) into my run, the watch was dead. Got home, completely charged it and then 3 days later the battery was already at 30%.
This has been my life recently. It's my off peak training and I'm only doing 4/5h a week but the battery doesn't last nearly as much.
I already tried the following things:
- Uninstalled ALL third-party apps, watch faces, data fields
- Hard reset (hold power button for 15 seconds)
- Connected and synced to Garmin Express to make sure updates didn't get stuck
My watch is running the latest version 11.0 since it came out (including the new GPS firmware).
Last night, after doing all the above, I went to bed with 100%. This morning I woke up with 83%. There's definitely something wrong.
I'm running, no pun intended, out of ideas. What should I do? Contact Garmin??
