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 21, 2020 5:07 PM in response to dmkleist

Same here. Series 4; not cellular. I used to be able to play a round of golf using GolfShot and still have around 55% by the time I got home. I’m prompted for power reserve a little more than halfway through the round.


I saw that all apps were set for background refresh, I thought I turned most all of them on. Luckily, I can try again tomorrow.

Sep 22, 2020 12:52 AM in response to spnx2

You can fix this yourself. Although the problem should not be there in the first place.


For some unpairing and pairing again has worked. I suggest that and then afterwards turn the turn the power off first on the IPhone and then on the Watch. Wait 5 minutes then switch on the iPhone. When it has fully loaded switch on the Watch. My watch is absolutely fine after this. If anything the battery seemed to last longer yesterday than it used to for a normal day including having the hand washing reminder running although I don’t have the 20 second watch timer running.

Sep 22, 2020 3:43 AM in response to VEGANSofWW

If the fix hasn’t worked for you-


it might sound dumb, like when someone says ‘have you tried switching it off an on again’ , but be sure you are actually unpairing the watch from the iphone rather than just turning off it’s connection to the phone and reconnecting again. If you don’t have to frame the phone camera over the swirly galaxy thing on the watch face then you haven’t unpaired it.

If you did that and restored from your latest back-up rather than set up as a new watch and it still doesn’t make a difference to the battery you might need to try setting it up as a new watch.


i think if that still doesn’t work at least you’d have the back-ups there

Sep 22, 2020 5:29 AM in response to roger3622

This solution worked for my iPhone11 pro/Watch5(no cell)/Watch3(cell). I have two watches. The drain on Watch5 was horrible. The drain on Watch3 was not as much.


After updating the iPhone to iOS14, as with ANY Apple update, you must power down then up. Apple updates never seem to work right until after the power cycle anyway. I forgot to do this initially.


Unpair Watch5 and re-pair. I started with 76% battery and ended with 50% battery so putting on a charger might be wise. I didn’t. You won’t lose any data or exercise metrics. Make sure you have a recent backup. I have automatic backups so I had a recent backup.


After monitoring it for 2 days it appears the battery on Watch5 is back to normal. I have handwashing and animated emojis on also.


I was going to unpair/re-pair Watch3 BUT the battery on that seems back to normal after the above steps.


Conclusion: I do not know if it was the power cycles or the pair/re-pair or both that fixed the problem. I suspect the problem may be in iPhone since the Watch3 battery seems back to normal without unpair/re-pairing after I did the Watch5.





Sep 22, 2020 5:51 AM in response to dmkleist




AW5 2 months old, battery condition 100% and AW4 21 months old, battery condition 90%. After the update to WOS7, the battery on both watches quickly discharged.
In my case, it helped turn off the optimized charge on both watches and recharge the watch. At the same time, I turned off hand washing.
The consumption of the watch is similar to the state before the update.


Sep 22, 2020 7:04 AM in response to dmkleist

Seems as this is not only limited to the update of the watch OS 7

I Have the same problem with the old os on a relatives watch, not fully as bad as on my updated watch thou but after 30minutes of outdoor running her watch went from 95% to below 10.. ad her watch does not on run the latest watch os

So it might be a bug introduced earlier and inherited to the new OS where it got even worse.

with the new OS I had 50% battery after 4 hours use without any training or gps use.


As others mentioned, unpair/pair the watch as new device seems to solve the issue. I am still evaluating, but it looks ok after half a day use after re-pairing


Sep 22, 2020 2:47 PM in response to dmkleist

Same here on Series 4. Not willing to reset it as a new Apple Watch and lose everything I already have on it. Charged all night, started at 7am, only 1 workout for 30min, and it's 2:45pm and I'm at 27% battery after not having touched it otherwise. To someone else's comment about Handwashing Timer, mine is already off and still draining.


Incredible flop on Apple's part, hoping they fix this very soon.

Sep 22, 2020 2:48 PM in response to dmkleist

I also just did a few hours ago the unpair - restore from backup and it seems better now after just 2 hours. Have not done a workout yet or turned on handwashing or sleep timer. I will not be using sleep and probably not handwashing either. I have kept the screen display set to always on, on my Series 5 watch. Seems normal right now. Thanks everyone for all the comments and help.

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watchOS 7 Battery Drain

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