Apple Watch Battery Drain Issues after Update

Since updating to WatchOS 10.0.1, the watch battery charges only to 80% overnight and the battery drains more quickly than before the update. I also updated my iPhone 14 pro to iOS 17 around the same time. Would this impact the watch battery?


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Posted on Sep 25, 2023 8:16 AM

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Posted on Nov 16, 2023 4:30 AM

As many here I was affected by the constant battery drain of approx. 5% per hour and I think I found what was causing this for me.

When I checked the Watch App on my phone ==> General ==> About it showed that it synced 15 photos even though I have not selected any photos or albums to sync.

Opening the photos app on the watch confirmed that and showed that there are no photos on the watch.

I then selected an album with one picture to sync and the photo count went up to 16. Next I created a photo watch face and set it to dynamic and suddenly the watch showed random pictures that I never selected to sync. I searched for these photos on my iPhone and deleted them from there until the watch only showed 1 picture being synced, which was the one from the album. I then changed the watch face back from dynamic to album and left the face on the watch.

I did this on Tuesday. Yesterday, on Wednesday my watch was at 37% after wearing it without additional charging for almost 17 hours. Usually it would have been dead after 14 hours max. Today I took the watch off the charger at 7:30, at 8:41 it jumped to 99% where it would have been at 94% or even less before and now at 12:30 it is still at 87% which is 2.6%/hour.

I think the constant photo sync would be a good explanation for this issue as the watch would constantly download new pictured from the phone and would index them. In addition to that it would also explain why not everyone is affected by this since this would not apply to people having their photo sync configured to sync specific albums rather than the watch syncing random photos when nothing is selected for the photo sync. And it would also explain why resetting the watch doesn't help to fix this issue since the watch would start randomly syncing photos again after the reset.

Might be worth to check/try for others.

800 replies

Oct 11, 2023 10:01 AM in response to madmath

Had a call with Support today - they recommendet to me to wait another week…. What else could I do :D

And they did some check on my watch (I think, they just collected logs) and saw that my battery had 79% health and suggested to replace it, if my watch won‘t recover within the next week.

Let me think.. either my watch had 100% battery health (16 hrs. duration) before the update and it - coincidently - dropped to 79% (3 hrs. duration) after the watchOS update… then I would be curious to learn the math, where 20% of 16 hrs. are 13 hrs., while 80% are 3 hrs.

In the other scenario the watch battery had about 80% before the update and lastet 16 hrs. and has 79% after the update and lasts now 3 hrs.

All this points to the update / software draining the batteries and won‘t get better, if I would replace the battery for 120€ as suggested.

I assume the watch would last 3.5 hrs with a new battery, I will lack the money and still can throw it into the duster.


Btw. today the watch died during my workout, after 44:37 minutes. It sucks…

Oct 26, 2023 8:39 AM in response to nelsonfromsarasota

I made an apple yesterday at the Apple Store, they ran some test on my Ultra battery. It passed, no issues.

It is giving me a message under battery that says it stopped charging at 81% due to temperature issues. I am using apple charger and cord.


The recommendation from the store was to call Apple tell them it is a temperature issue and that it is creating battery problems. I am doing the express repair since I have AppleCare and they will send me a replacement first and I will return mine. Then wait for them out come if what’s going on with the battery

Oct 30, 2023 2:29 PM in response to JGowins65

I have the same problem with a Series 8. I called Apple today and they determined that the hardware on my watch was fine. They basically said to suffer through it as best you can in low power mode, etc. and it will be eventually fixed in an update. Apparently, there's no way to view which app or feature is draining the battery on the watch or phone. I know these features used to be available but in the classic Apple style, removing features is considered progress.

Nov 1, 2023 1:34 AM in response to Maisy8811

i am extremely sad and troubled to see some posts here. kindly permit me to explain. a) the watch was working absolutely fine and after the update and the problem appeared someone accepted Apple's claim that they have to pay 330 bucks?!?!. really? b) The watch was working fine and the problem comes around and you either buy a new one or believe Apple's claims that it is a HW problem and better buy a new one! really!. I have been on this thread from the start and the user actions and reactions are utterly appalling. don't get me wrong ... I think the problem lies between Apple and 3rd party app developers, both or one side but I have solved and reported in this forum that my problem was solved when removing ALL apps that pertain to watch faces, and even some I have never ever used but where on the watch! if someone does not do this and continues to see the watch drain in a couple of hours or overheat... please consider this. Please turn off your phone and stow it away for a couple of days until this problem is solved. battery draining and overheating seriously damage the battery's health. guys and gals, please use common sense!

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Apple Watch Battery Drain Issues after Update

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