WatchOS 10.1 battery drain issue

If the battery drains too fast after an update, see all the replies to:

Battery Drain since watchos 7.4 - Apple Community

WatchOS 7.5 battery drain - Apple Community

FWIW, in some cases, unpairing the watch, completely erasing it, then pairing and restoring the backup will resolve the battery draining issue after an update. (Simply unpairing and pairing again may not work.)

Unpair and erase your Apple Watch - Apple Support

Also, some people have found that simply waiting a few days after an update resolves the battery draining problem.

For the people that this affected it killed the watch in 2 to 3 hours, made it overheat, etc. I uninstalled Moby Fox that I read about somewhere in the forums and it fixed my issue. I deleted it off the phone and the watch

***Update**** so i uninstalled the "Moby Face" app on my phone/watch and works perfectly fine now battery life on watch has been normal now. since charge to 100% on side here only at 55% after 36 hours of standy/low use

Also on wifes phone we updated the "Moby Face" app and couple of other minor apps and same result, all seems fine now charges ok and she had nearly 2 days now since charged to 100% so i dare say it will need a charge tonight when she gets home about 10.

I have unpaired, reset and reconfigured from scratch, but this time not installed the MobyFace app. Watch battery function seems to be restored to normal.

[Edited by Moderator] 

This happens when one of your apps isn't up to date for watchOS 10.1 The app is causing the battery drain. I was able to fix this problem by removing all of the apps that are not originally on the watch. Then you can add them one by one to find out which app is causing the battery drain.

Try rebooting your iPhone, but NOT your Apple Watch, and see if that helps. If you need to reboot both, reboot and unlock your Watch before rebooting your iPhone.

I’ve been reporting this issue consistently with system diagnostics since the 10.1 / 17.1 testing period, and throughout 10.2/17.2 testing as well; I can tell you it still isn’t fixed in the latest versions. The insidious part is that everything may appear normal for several hours or even several days, then out of the blue my battery drops from 80% to 20% in a matter of hours (on an Ultra 2). This has happened even while in Sleep Mode (iPhone nearby, no Always-On Display).

So far, rebooting my iPhone after my Apple Watch has seemed to keep the crazy battery drain at bay.

In addition to posting here, anyone experiencing this issue needs to provide feedback either at apple.com/feedback, or using the Feedback Utility; otherwise it will keep getting ignored.

I changed the watch face, I was using the pennut watch face I tried another and boom fixed

Battery drain is not the only problem. I can no longer switch between watch faces! And the timer has issues - there is no verbal acknowledgement by Siri that the timer is set.

Unpair your Watch, disconnect all the apps and then add the apps one by one, that have solved my problem.

I uninstalled mobyfox as others stated and fixed the issue of battery drain back to normal didn’t reinstall yet though to test if issue will return upon reinstall

Are you running Moby Fox? If so, uninstall it

I Have had this issue last few days, iWatch Series 9 - 45mm, installed update 10.1 Tuesday or Wednesday, didn't wear but noticed when i got back from doing some graft that day that it had drained completely, just sitting next to computer, last 2 days i have charged to full and timed the power loss and today done the same after doing the unpair, re-pair, restart etc. and still the same 25% loss in 30-40 minutes of sitting here on side of computer in a standby state, Also the wife updated her iWatch Series 9 - 41mm to 10.1 Thursday evening and voila same issue last 2 days, normally we get a full day+ before recharge prior to this update. So i have now just uninstalled the Moby face software on mine and i will try updating it on hers to see if either fixes the issue as people suggest, will update in 24 hours

When I look at my watch I can see that it loses connection to my iPhone and my WiFi network and reconnecting constantly making it overheat and drains my battery in a couple of hours. Apple needs to address this problem now.

Ever since the 10.1 update and the 17.1 update my watch and phone drain within a couple of hours while they are sitting idle. I have followed all of the recommendations and nothing. Apple has done nothing to correct the obvious flaws in both updates. If not resolved quickly, I’m considering getting rid of my all

of Apple Products and retuning to Android.