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New up to 4% per hour battery drain

Digeridoo
over 3 years ago

New battery drain up to 4% per hour rate started right after Course View maps update via Garmin Express 7.7.1.0. My watch was on SW 5.50 and I tried everything I know how to fix the battery drain (hard reset, music provider, maps re-installation, discharging to 0%), but without success. I even updated my watch to SW 7.20. Now my watch lasts 1-2 days without activity, BT, PulseOx.

Has anybody experienced a similar issue with battery drain last week?

Is there some new workaround to fix it?

Have you tried a full reset to defaults with or without success?

  • 0 over 3 years ago

    Same issue here since Saturday July 17. Charged the watch Friday Afternoon after a run using BT for music. Saturday night watch was at 5% battery with no activities recorded on the watch and Pulse OX off. Had to charge the watch again Monday 10% battery, and watch went from 23% around 2:00 am to dead at 5:00 am today (Wednesday). Powering off, soft reset had no affect on battery drain. In 40 minutes this morning battery went from 95 to 92 % in regular watch mode/no activity recording. 

  • 0 over 3 years ago

    OK, so, after losing 70%+ of my battery in 48 hours only doing one 4 mile run and one 1 mile walk, I called Garmin again.  Said, hey, your engineer put logging on my watch, and I told him what happened within the last 48 hours, thinking they could look at the logs and maybe see what happened.   Guy put me on hold for a good 5-10 minutes, came back, and offered to send me a new watch.  He didn't tell me who he spoke with or what that person said, but, I'm getting a replacement this Friday (doing an express replacement).  I'll report back if that fixes my issue.  

  • 0 over 3 years ago in reply to rtperna

    Congrats on the replacement, and hope that fixes the issues you're seeing. Please let us know!

    I just lost 10% battery on a 1-hour GPS activity during which BLE was on, but the phone was not present. Perhaps the watch increases transmit power when it can't connect to the phone. Which could also happen at night. I contacted Support yesterday and they would get back to me, but they haven't done that yet.

  • 0 over 3 years ago in reply to --

    With phone next to bed and BLE on, sleeptracking on but no PulseOx, acceptable battery use (7%) over the ~16 hours since last night's run. In my case everything points to the BLE phone connection. It has to be off, OR the phone has to be in reach.

  • 0 over 3 years ago in reply to --

    Just checked the battery drain while the watch is Off. With normal Power Off battery drain is the same - 5% per hour. With hard reset (press light button 10 sec) battery drain is 0%. Seems the battery is OK, but what do they do when the watch is off via normal Power Off? Garmin started mining coins?

  • 0 over 3 years ago in reply to Digeridoo

    Very interesting observation!

    (If someone finds this post as a result of a query about "sleep" - no need to read on, this is not about human sleep).

    I'm guessing, but I'd expect a'true power off' would, after saving the current state and switching most of the processor(s) off or putting it/them in deep sleep mode, only do some timekeeping and checking for keypresses to wake it up. That takes so little power it can stay for months in that state.

    So I guess (again..) that 'normal power off' is more like a suspend: current state still in memory, screen off, most/all sensors off/in deep sleep, and able to resume quicker than after a true power down. That should be way more energy-efficient than 5% per hour! Perhaps something doesn't enter low power mode when it should.

    (A good article about the different types of sleep modes is here.)

    It would be nice if we'd have more information on things like: Is this issue registered, is it worked on, when could a fix be expected? Is there a workaround? 

  • 0 over 3 years ago

    The new watch fixed all my problems.  Sleep and battery are both normal now.  10% drain a day doing nothing, just under 10% an hour with GPS/GLONASS activities.   Had it for 48 hours.  So we’ll see how it ages, but, looking good so far.  It’s a Rev D, just like my original one. 

  • 0 over 3 years ago in reply to rtperna

    Good to hear that's fixed. What a quick replacement!

    What firmware is on the watch? 7.20 as well? BTW, how do you see it's a Revision D? 

    Mine is still totally fine as long as the phone connection is disabled during the night. 

  • 0 over 3 years ago in reply to --

    It shipped with 6.2, but I updated it to 7.2 before use.  You can see the revision on the box itself.. that said, maybe it's the "revision D" of the box and not the watch?  LOL.  But no, all's well!  

  • 0 over 3 years ago

    After Factory Reset and sync via Garmin Connect and with stock settings (watch face, widgets etc.) the battery drain is the same 5% per hour. I give up.