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.

  • To be honest I think I'll leave it turned off now,I don't actually have any sensors.

    The only thing I've got is the Garmin Z30 range finder and I think with it being Bluetooth it should be ok.I tried it last night and with auto discovery off the paired rangefinder says searching and when I fire it,it connects instantly.

  • @lant, so with the autodiscovery=off option, you will be able to connect the sensor .. Just autodiscovery is blocked for new unpaired sensors .. , so there are no blockers for connecting devices( am I right ) , Bluetooth or Ant+. So, from your point of view, it's better than before? 

  • It seems to be a lot better,even with no activity. With the same settings last week apart from the auto discovery being on ,I was using more battery life.Its just actually gone down to 95 percent as we speak but I think 5 percent in 2 days is actually better than my Tactix 7.

    If the fix comes with a software update everything should be fine but until then I will leave it turned off as it doesn't t need to be on.

  • With Autodiscovery=OFF, after an activity with an external sensor I lost 3% of battery in 5 hours which is way too much (fenix 8 51mm). Had to do a restart. 
    Summary: deactivating autodiscovery does not solve the problem completely.

  • I don't have the problem

    But i don't install any updates since september. I use the software 9.20 on my fenix 8 amoled 51mm.

    I know, all updates cause drain battery with all fenix. I decided don't install any updates and i don't have any problems

    When the updates will be "stable", i will realize an update

  • Yes you have the the restart whi is really bad .. things is if hear rate sensor is working differently as other bluetooth device or its related to the ant+ issue .. i am doing same tests with logs so we will see what is happening after activity .. 

  • OK, something weird is going on with this watch. Battery drained this morning 4% in last 4 hours while yesterday battery drain was 4% in 24 hours. Funny part is Im using watch exact SAME way like yesterday. I did not changed or touched anything...... i have to say wtf?????

  • but did you use external sensor in activity ? for me for now activity without sensor is OK no increasing battery usage or draining ..
    today TEST: will go run using by wrist HR without stryd will then compare how battery consume will look. .. no restart after activity
    tomorrow TEST: run with HRM PRO plus without Stryd .. no restart after activity
    sarturday TEST: runb with HRM PRO plus with stryd .. no restart after activity

  • External sensor is contributing to the problem but it isn't the reason this drain is happening. I posted on other threads on this, it seems like there is some background process happening in the watch that just keeps draining the battery and this usually kicks off after an activity. 

    It doesnt matter if the activity is GPS or no GPS or sensors were used in my experience. 

    the advice you have given here is assuming we're over utilizing the watch and that drains the battery. That is not the case. Many of us are using the watch exactly the same day by day and when the drain starts, it doesn't matter what happens, it will keep draining until the soft reset of the watch.

  • Like I said two post up. Something started battery drain without activity, without BT, without wifi, without OX. Yeah I would say some background process, but what process if I didnt do anything on the watch.

    My last activity was on sunday, its on phone allready and didnt had any issue until today. I dont use any BT sensor at all, just the phone but I didnt connect it since sunday.