Fenix 8 Amoled 47mm - Battery Drain

Hi,

My Fenix ​​discharges very quickly. 20% per day without GPS workouts and without AOD. That's relatively high compared to my Epix 47mm.
Does anyone else have the same problem?
I hope that this will be fixed with the next firmware update.

  • I also enabled logging upon Garmin request and the drain kept going on v11.89 and v11.90 (Fenix8 Amoled 47). I just tested registering the watch to the beta program to see if any version currently in beta is solving this issue.

  • Fully charged mine yesterday. It said 29 days battery. All sensors turned off. 
    today it says 25 days.. draining far quicker than it was when I bought it! 

  • Similar issues with enduro 3. Garmin has enabled logging on my watch. I hope something identifies the drain

  • Same here. Same device. Started to happen just couple of days ago. Before it was all ok. Not working out today and had like 20% battery drop during just 8h since morning. 

  • Quick update and glance of « hope » : enrolled the F8 47 amoled to the beta program, currently running os v12.09 and back to a somewhat more acceptable 0.44% battery use /h or 12d/charge with overnight pulse oxymeter enabled and a few sensors like Stryd and devices like openrun paired but 0 activity (via the ConnectIQ "battery widget with instant charge detection" app)

    now this is in no way acceptable for a device at this level to be forced to run beta to just get within 20% of marketed abilities but that’s a start.

  • I started to experience battery drain on my f8 amoled after pairing and running with Coros hr monitor. Restarting the watch helps until I run again. Coros device is of course disabled when I am not wearing it and watch is not connected to it outside of running. Can I provide you any more information?

  • Just to add some info. I am on fw 11.90. 

    Also I just noticed that the watch is significantly colder when I restart it (I guess it does make sense that using more power does actually warm up the watch).  

  • My statistics for the past few days

    28.10.2024
    10:25 - 37% after soft restart
    13:29 - 36%
    14:50 - 36%
    16:52 - 36%
    ----
    29.10.2024
    6:50 - 35%
    11:00 - 34%
    13:15 - 34%
    15:45 - 34%
    20:35 - 33%
    ----
    30.10.2024
    10:00 - 31%, upgraded to 11.90
    13:30 - 30%
    14:00 - 30%
    16:30 - 30%
    20:00 - Sport activity with no sensors
    22:30 - 27%
    ----
    31.10.2024
    5:30 - 26%
    10:30 - 25%
    14:20 - 25%
    15:30 . 24%
    ----
    1.11.2024
    17:50 - 22%
    ----
    3.11.2024
    9:30 - 17%
    12:30 - 14% (1 hr outdoor GPS activity with 2 BT sensors)
    15:00 - 12% - noticed quicker battery drain and made a soft restart
    ----
    4.11.2024
    14:00 - 10%

  • I recently purchased a fenix 8 43mm, about a week ago. It updated to 11.9 immediately when I connected it to WiFi. I am shocked at how bad the battery life is. I experience a drain of 50% or so per day. I have to charge every day or every second day. I have switched off WiFi, notification center, 4s display timeout, tried so many options to preserve the battery but to no avail. I have now activated the beta software but obviously I am already on a later version than this suggestion. I have owned almost every fenix model since they were released and have never experienced the battery life to be this bad. Please fix this issue. The battery life is nowhere near what is advertised or evem that of the previous models but the price is significantly more expensive.