Garmin Fenix 8 (47 mm) battery bug

Device: Garmin Fenix 8 (47 mm)
Issue Description: The device's battery drained unusually fast overnight.
Conditions:

Night mode was enabled.
All sensors for sleep tracking were active (e.g., heart rate monitoring, SpO2, etc.).
The battery dropped from 40% to 2% by 4 AM (starting from 10:00 PM), which is abnormal.
I’ve had the watch for 4 days, and the first 3 nights it performed normally. This is the first time this issue occurred, and it alarmed me. Without the watch's alarm, I would have been in trouble.
I switched from the Fenix 6, where I never encountered this issue.

Expected Behavior: The battery should have drained at a more typical rate during night mode.

0 dukeskd 9 months ago

What was the battery drain on the normal nights? I've had nights where it was 1% and others 5-6%

0 jeversace84 9 months ago

This was a known bug where battery would drain after recording an activity. Either give the watch a restart or get on the Beta project as its been fixed in the Beta (release to all watches is imminent im guessing).