Huge battery drain v2.66 firmware investigation

I notice my Venu 2 SQ Music (v2.66) started to have huge battery drain about week ago. Usually it has 5-10% battery decrease per night, but now it's 50%.

Gladly my girfriend has Venu 2 SQ Music as well but she does not update the firmware (her watch has v2.53).

I set all settings on both watch to equal and installed the same version (v5.5) of Garmin Connect app.

Results:

Firmware	Battery drain per night	Connect app	Auto Lock	SpO2	Android
v2.53	9%	v5.5	Disabled	On demand	v9.0
v2.66	54%	v5.5	Disabled	On demand	v14.0

I continue the investigation, next time will check with Auto Lock function enabled and equal Android versions.

VENU 2 SQ Music firmware v2.66 vs v2.53

Top Replies

1761239 1 month ago +1

Did anyone find any solution to this issue? Facing the same issue with my Venu sq 2 since around July. Started to happen suddenly. Tried all the options to troubleshoot but to no avail.

All Replies

0 4209445 1 month ago

Mine too! About a month or two ago. Same software version 2.66.

Update: tried hard reset but did not help. Garmin's planned obsolescence?

0 1761239 1 month ago

Did anyone find any solution to this issue? Facing the same issue with my Venu sq 2 since around July. Started to happen suddenly. Tried all the options to troubleshoot but to no avail.

0 4209445 4 days ago in reply to 1761239

Still waiting for Garmin to release a software update to fix this. I'm quite sure it's a software issue. My SQ2 is just 1.5 years old and therefore can't be battery chemistry issue. If so then Garmin watch batteries are the worst. My friend's old AppleWatch4 is still working fine.

0 3851152 1 day ago

One more affected Sq2 here.

I don't know when I got the 2.66 update but as of a few days ago, out of the blue, the watch lasts less than 24h on a full charge, after more than a year of 10+ days on each charge.

I haven't found any tool to troubleshoot battery health or internals, or track power consumption. Battery % is the only indication and it's not very useful…