14.20 Battery Drain

I'm on 14.20 since day 1 and I have no issues..

Something to do with your setup? Custom faces? Issue from mobile? Have you tried disconnecting for a day etc?

I am on 14.20 since day 1 too, with two FR955 Solars and there are issues. The new one is in all off communication losing about 6-7% percent as day. Quatro watchface...which sometimes refreshes once in 2 minutes.

Previous watch had 4-5%...till drain occurred. Today I tried to sync/change (setup) activity screens for the first time for some activities...it was loosing probably 5% in 30 minutes connected to a phone, unbelievable. Xiaomi on MIUI 14, Android 13.

Also annoying thing...setup activity screens on Garmin Connect - cannot open Pace fields + Other or Graphical fields when chosen show something completely different than selected. Why they don't allow it to do it in GC (Polar Flow, hello?) in a computer browser...it would be a breeze, doing it on a watch is a pain.

Losing 6 or 7% of battery life a day in smartwatch mode is what Garmin promises or not? 

Where is the excessive battery drain? 

There where it is not used as smartwatch, reading with understanding. ALL COMMUNICATION OFF, sync off, phone connection off, WiFi off, SpO2 on demand, Airplane mode ON, watch locked. Not touching a watch whole day, only to view a Morning report and lock it after that - looses 6-7% a day. I don't use sports watches as smartwatches.

In my case I use it as a 100% smartwatch with all the functions activated and it is consuming me 6.87% per day that is very consistent with what Garmin promises. 

Ive lost 10% (100-90%) over night. Connected to phone, regular watch face. SpO2 off. 

Thank you Garmin for happy Easter "surprise" - drained battery again. Charged (the new) watch for the third time since I got it yesterday morning, went for a 3 hour bike ride with Auto select and cadence sensor connected (had problem with HRM sensor/battery) so I used OHR. Lost 18%. Saved activity, turned off sensor search - a while later it lost 3% more.

Then long press and turned it off. Later when I fixed the Polar H7 connected it to a watch because I removed it earlier. No phone sync at this moment. Later I noticed it lost additional 3% in short period so I went to quick menu and turned it off that way. I forgot to turn it back on and did that just before the sleep at 11 pm. No phone connection, phone was off. Woke this morning with additional 20% battery lost during the night with every comm off...I mean wtf...Now I turned it off with a long press.

Has anyone on 15.09, who had previous drain, experienced the same with the latest beta? I will wait for stable version and return the watch again if this occurs again.

EDIT:

Today tested Varia RTL515 for 5 minutes. Turned them off (radar and light) in sensors, airplane mode ON - lost almost another 10% in 3 hours. No phone connection.

Likewise, Garmin 955 v14.20 previously I'd be losing around 0.3 - 0.4 % per hour with BT on, OHR, no SpO2, including around a 1 - 1.5hr activity daily. Now losing around 1% per hour or 22 - 25% per day! Needs to be fixed. 

OK, if I go to the GC My Day screen I can see that the app and device are syncing about once every 5 seconds. I've also checked my phone and Garmin Connect is the second most highly used app on the phone by battery consumption, which if you consider each sync lasts about a few seconds (as there's nothing really to sync) just shows how bad this issue is. I have uninstalled GC from my phone and that hasn't made any difference. Resetting the device itself (which is a huge PITA but, hey, if it helps) has no effect and the behaviour still exists. So, this is a bug either in the firmware on the device, or in GC.