watchOS 7 Battery Drain

I updated my series 4 Apple Watch to WatchOS 7 today. I use my watch all day and usually have about 30% battery left when I go to bed and start changing. Today my phone got to 10% by 2:30 pm! Why is this drawing so quickly?

Posted on Sep 17, 2020 2:59 PM

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Posted on Sep 20, 2020 10:01 AM

I had the same issue on my Apple Watch Series 4 after updating to iOS7. I tried shutting down background app refresh, and ensured sleep app and hand washing apps were off.


This didn't fix issue so I read on some other forums about repairing to your iPhone. So I did a reset on my watch. I restored using the same backup I just reset and today the problem seems to be gone. After a 2hour walk I have only went down 13% which is normal level. When I was running out of battery my watch was showing a 35% drop after my walk.


if restoring from the backup didn't work I was going to try setting up as new watch but obviously I didn't have to go that far.

874 replies

Sep 22, 2020 10:23 AM in response to dmkleist

So I think I’m zeroing in on something here:

Apple just had a service outage that lasted for a bit. During that time my battery drain was significantly SLOWER than when it was restored. Now that my battery is draining super fast and I did the whole:

  • unpair
  • set up as new
  • power off phone
  • power off watch
  • power both back up


When I look at Battery on my watch, you can see the slope of the power drain changed during the outage and started to drop off again. I think this is tied to some apple services.

Oct 8, 2020 10:00 PM in response to foxEone

There is a cure for this which has worked for me and others and it was posted in this forum. I claim no ownership of it and it is replicated below and thank the originator for it. You may find that rebooting your iMac is needed after you have done this.


Apple Watch - Computer Unlock


  1. Open "Keychain Access"
  2. In "View", enable "Show Invisible Items"
  3. Search for "Auto Unlock"
  4. You should see a whole bunch of application passwords for "Auto Unlock: XXXX's ..."
  5. Select all records and delete (this will reset/disable auto unlock on other Macs if you use multiple Macs)
  6. Whilst still in "Keychain Access", search for "AutoUnlock" (no space)
  7. There should be 4 entries for "tlk" "tlk-nonsync" "classA" "classC"
  8. Select 4 records and delete (don't worry if they re-appear, the system repairs this automatically)
  9. Open "Finder" and navigate to "~/Library/Sharing/AutoUnlock"
  10. There should be two files "ltk.plist" and "pairing-records.plist"
  11. Delete both files
  12. Open "System Preferences" and try enabling auto unlock. You may need to enable it twice, the first attempt will fail.


Oct 14, 2020 9:55 AM in response to Nodak7

For my AW4 the unpairing/repairing/restoring watch from backup and then powering iPhone off then watch seemed to do the trick I guess - I mean should I pat my head and rub my stomach in a circle at the same time too??? No noticeable battery degradation with new 7.0.2 update so far.


However, the CONTACTS have been removed for my Complications on the Infograph watch face so that's LAME. Apple fixes one thing and then screws up another. Honestly, are they for real??? Is there a team of monkeys working around the clock on this stuff???

Nov 17, 2020 1:51 PM in response to dmkleist

Apple Watch 5 same problem, since last update, battery draining fast, no gps maps logged in activity tracker when you do a run or cycle, run or walk work out, I did the unpair and restore from back up on phone and watch, it fixed the map logging in the activity tracker when you use the Apple workout app but I used to get 2 days from the battery, now I get about two thirds of a day out of the battery.

if you use the Nike app to do a run, it no longer displays the gps map route to the activity app, you can only see it in the Nike app.

i notice the Bluetooth from watch to ear buds is also no longer as reliable as it once was, often drops mid jog now where it never did before.

Dec 11, 2020 11:38 AM in response to Yosemite1937

Hi there I've posted before. The specific problem I've had is that the watch will run for between 30 mins and an hour during a workout and then shut down and restart showing only reserve power, and after a protracted saga with Apple support staff and the watch going back twice and them agreeing that the battery itself is fine I finally connected with a fourth senior adviser who tackled the case and arranged a straightforward replacement (under warranty).


The problem I described above has been reported by a number of other people, and seems to be different from the general problem of rapid battery drain, but was made worse when OS 7 was installed.


People also say that unpairing and re-pairing helps, and that waiting a few days for the watch to settle down helps.


People also say that regarding the problem I described they have even had replacement watches and experienced the same problem


And a number of people reckon the problem is to do with both the watch and the paired phone, and may even go wider than that, that they are all interconnected and there's some deep bug


So I just received my replacement watch (and if you're having trouble with the Apple customer advisers, persist. I've found they vary from not at all helpful and obstructive to very helpful)


I've taken on board the suggestion that the problems can be to do with both the watch and the paired phone, so I've completely wiped my 6S phone and restored it from backup. it's on OS 14.2. I did this before attempting to pair with the watch.


Now I've paired it with the new replacement watch (running OS 7.1, which it came installed with).


I'm expecting the battery drain to be high for a couple of days from what others have said as the watch configures itself.


And then I'll go for a long run and see if it works any better . . . and report back on what happens!

Sep 18, 2020 5:07 PM in response to Blucil27

Just piling on here. Series 5 Cellular, I wear my watch 22/7, charging in the morning when I first wake up to 100% and then going all day and thru the night until the next morning. I would usually have around 20% left in the morning. Never had an issue until WatchOS 7 install. Yesterday and today my watch was completely dead and shut down by 3pm. No AOD and today I tried turning off hand washing to see if that helped, made no difference. Clearly an issue.


My Series 6 should arrive tomorrow, will be curious to see if the problem persists with the new one!?!


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watchOS 7 Battery Drain

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