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Battery Drain

KMcA
over 2 years ago

Previous questions directed me to a locked thread.  

My 255 was at 100%. I went to an event for 1:30.  When I got home I was at 82%. It kept dropping rapidly.   I restarted the watch which seemed to get it out of its funk, but what if it had been during a race? I got the Garmin after my Apple did this during a couple of races.  

Is there a fix?

  • 0 over 2 years ago

    Other than the one time dropping nearly 20% in a few hours, the glitch has not reappeared.  I wear it on 3 or 4 hour runs, tracking activity and sometimes with music, but not receiving texts, and I lose just a few percent of battery.  

    Whatever happened that time seems to have been an isolated event (hopefully!)

  • 0 over 2 years ago

    Battery is at least worse than expected or as advertised. With just one workout (1 to 2 hours) in 7 days, the battery does not last longer than a week, no music playback and besides, just "normal" usage as a watch, which means only the half of the advertised runtime. This is disappointing. 

  • 0 over 2 years ago in reply to Mat990

    Agree, I guess in the advertisement they just used ideal conditions, such as no activity, no step/sleep tracking, no heart rate monitoring, no music, no connectivity and alert, no pulse ox, etc.

    In my case (255s music) normal usage has steps, sleep, heart rate tracking, ~1 hour connectivity with phone, ~40 minutes of indoor workout, and a simple watch face. This usage can take up to 12% / day (maybe 255 only ~10%). 

    I don't know about other users that can take less battery consumption with more activity compared to my case.
    For me, overall for 255s music can be used around ~8 days until the battery is empty, if I used more features like GPS, more time connectivity with smartphone, and music, I guess only 5 days usage.

  • 0 over 2 years ago in reply to 4983492

    Every day 2 hours of activities, always measuring pulse also during night, only thing is that I take care of the watchface not to be updating all the time seconds or some always changing data.

    Usage 12% per day.

    Normal usage plus battery saver through the night 7% per day.

    I would say as expected if there is no sudden drain.

  • 0 over 2 years ago

    Hello all,

    Please see the FAQ below which should give some more details about battery life:

    Forerunner 255 Series Battery Life Assumptions

  • 0 over 2 years ago

    If you feel that your device is operating outside of these battery life expectations, please answer the following:

    1. May we, if necessary, have permission to email you?
    2. May we, if necessary, have permission to view/access your Garmin Connect account?
    3. In what country do you live?
  • 0 over 2 years ago in reply to Garmin-Kevin

    1. Yes
    2. Yes
    3. Germany

  • 0 over 2 years ago

    Note change in beta FW 13.15 - " Improves the syncing of settings between the device and Garmin Connect Mobile." . I expect this will address the battery drain issue for many, including me. Will try and post results here.

  • 0 over 2 years ago in reply to GS

    I also received the update. I am looking forward for the results!

  • 0 over 2 years ago in reply to GS

    No success. Changed data fields in activity screens using GCM, and lost 4% in 42 min (what I might expect to lose in a full day without activity). So, for me, the battery drain issue still exists and is directly related to using GCM to change settings (data screens) on the watch.

    As stated previously, workaround is just to use watch to change settings, not GCM.

    Did the 15 sec hard reset (hold Light button), and should be back to normal. If not, I will post here again.