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The battery life on my S7 seems to have returned to normal in the 2 full days since it upgraded to 10.1
 
For me, if anything, 10.1 has improved battery life on my Ultra 2. I’ve just past 60 hours and have 30% battery left. Now I’ve been busy the last days so only time for a couple of short workouts, but still, I was not expecting to approach 60+ hours on a single charge
 
Turning off the wifi seems to help, give that a try.

This morning my new Ultra 2 (got it last week) lasted some 4h after having lasted for more than 48h in the days prior to making the 10.1 update. Yesterday night after the update it took forever to charge and then died during the night.

Battery health is 100% so this looks very much like a software issue... Don't lose your time reinstalling etc — there has to be an update soon.

But do try turning off the wifi, now it's still at 100% after 1h.
It was not the wifi, it may have been a third-party app (removed some). I am still on the same charge as yesterday, still at 66%. Maybe it just needed some time to shape up.
 
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10.2 beta 1 and no apps installed same battery drain on my S5 (10%-12% per hour aprox). And the weather complication bug come back. Incredible, it's a joke apple.
 
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For me, if anything, 10.1 has improved battery life on my Ultra 2. I’ve just past 60 hours and have 30% battery left. Now I’ve been busy the last days so only time for a couple of short workouts, but still, I was not expecting to approach 60+ hours on a single charge
How did you get 60 hours? What is your configuration?
 
How did you get 60 hours? What is your configuration?
Modular Ultra, only things I have changed is that I turned off the daylight sensor - I’m outside all the time, I don’t need the watch to tell me that. And I disabled ‘show now playing’ on the watch. Have complications for temperture, calendar, battery, workout, timer and music. Middle complication is heart rate from Athlytic. Display brightness is set to middle. I put it on the charger after 62 hours, still had 24% battery left.

IMG_0134.jpeg
 
Turning off the wifi seems to help, give that a try.

This morning my new Ultra 2 (got it last week) lasted some 4h after having lasted for more than 48h in the days prior to making the 10.1 update. Yesterday night after the update it took forever to charge and then died during the night.

Battery health is 100% so this looks very much like a software issue... Don't lose your time reinstalling etc — there has to be an update soon.

But do try turning off the wifi, now it's still at 100% after 1h.
I don’t see how it can be. My ultra 2 has been perfect free since I got it on release day. I only have three 3rd party apps installed but everything is turned on and battery life is superb. I’m losing less than one percent per hour I don’t use it intensively and only for notifications etc but it is outstanding. If it’s a software issue, then why is it not affecting all watches?
 
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Chiming into say I had the same problem - watch was not charging even on the charger after updating to 10.1. I removed all 3rd party apps and it seems to be fixed and battery drain is normal. I don't have any of the 3rd party apps I've seen listed in this thread; it would be nice to be able to pinpoint what's causing it.
 
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Re-paired, restored, back on charge overnight (SE Gen 1 on 88% battery health). Took it off at 5:17am (UK) and it went from 100% to 40% in an hour. Spent a while on Apple's support chat who were completely and utterly useless. They insisted on sending me guides on battery usage and how to update firmware never once acknowledging a bug in the OS and the fact the issue only occurred post update even though I spelled it out for them....
Try removing the third party apps. That worked for me when everything else failed.
 
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If it’s a software issue, then why is it not affecting all watches?

I would ask the other way round: if it would be an hardware issue, every watch of a kind would be affected (assuming e.g. that there are no regional differences).
So the only difference between watches of a kind is the installed software and the configuration (which is also software).
 
Had some problems with mine before 10.1. Now after 20 hours down to 22% so I probably got another 5 hours of juice which is typical for me with a battery capacity of 80%.
 
I would ask the other way round: if it would be an hardware issue, every watch of a kind would be affected (assuming e.g. that there are no regional differences).
So the only difference between watches of a kind is the installed software and the configuration (which is also software).
I agree about the configuration, but we are on the same release of OS software.
I think it’s apps on their watches and on their phones that they are mirroring on their watches
 
I’ve been quite disappointed with battery life since the update. However, I seem to have found which app for me is the culprit.

I do not have Apple Music, and instead rely on the old school music sync through iTunes. I have over 6k songs, however obviously I do not need that much on my watch. I had a Smart Playlist on my phone that was basically top 1000 most played songs. In my watch Music app settings, this is what I selected as the only music I wanted synced to my watch. This has worked fine since I got my series 8.

After I upgraded my watch to WatchOS 10 I noticed I was getting a third of the battery life I used to get. Like in 10 hours I would go from 100->10% without using the watch at all. No fitness, music, nothing.

Well digging around trying to troubleshoot, I looked in my watch settings -> general -> about. It showed my watch as having over 3k songs on it. Now mind you nothing changed in my music settings. The ONLY playlist I was syncing was 1000 songs long, and Recent Music was disabled. I also noticed that that song number would sometimes go up or down depending on when I opened the About menu. Something was definitely wrong there.

I reset my watch from scratch (no backup) and reset everything back to where it was. Seemed to work fine for 24 hours, however shortly, I’d see the battery issues return.

I tried syncing different playlists, loading less music onto my phone, etc. I verified that the playlist was fully synced while it was on the charger (according to the Settings -> Music) to make sure it wasn’t needing to sync in the background. I even disabled Music background activity. Setting it up multiple times as new didn’t work either. Every time I’d load songs onto my phone my watch would start to poorly perform.

The only thing that has worked so far is to remove the Music app from my phone (since you can’t keep it uninstalled from the watch separately)

While this seems extreme, I give you the below screenshots from my watch battery timeline. The first shows how bad this was. Every day the drain would be horrible. The second shows what it looked like after deleting Music. You can totally see the inflection change. (The screenshots overlap a bit in time) Ever since I’ve deleted music, no more battery problems.

I’m sure there’s some stuck music service that’s doing this, but there’s nothing I can tell that I’m able to do to stop it.

Update for any of you who had battery issues like me stemming from the music app.

The issue turned out not to be the app itself, but specific playlists that were causing my issues. I manually added playlists one by one to my watch. Once I found the offending ones, I removed them, and haven’t had issues since.
 
My wife updated her iPhone XR to 17.1 yesterday but left her Watch on 9 and lost 50% of her battery overnight, which has never happened before.
 
I don't understand what people mean by "turn off 3rd party apps". Does it mean to turn off background refresh?

on another note, I found another two issues with my iPhone 10.1:

1. overheating while charging (with the original Apple charger): it is so bad that the watch never reaches 100% charge, usually reaching 80%. Also, that affects the attempts to update the phone (I'm trying to install the 10.2 public beta) because either the watch is too hot to have something installed, or it runs under 50% so quickly that the installation is never complete.

2. The Bluetooth connection is unstable. If I go to the BT settings in the watch, even if the watch is connected to the iPhone, it does not list the devices and it shows only the "Searching" text with the spinning cursor next to it.

Has anyone else found similar problems?
 
I unpaired and setup as a new Watch on Friday or Saturday running 10.1.
This seems a bit steep to drop from 92% to 68% in just under 5 hours, with no workouts or cellular-only time or any media or calls.
Do these energy curves seem unusually steep to anyone else?

incoming-C32E1CAF-2D87-4EA7-BD7A-0BA410E9FD3B.PNG
 
Do these energy curves seem unusually steep to anyone else?
That curves look like mine - and I am unhappy, too. That's the reason why I wait on 10.0.1 (AW5) and fear, that newer versions are worse.
I had my bread-baking-day yesterday. And I made my observation again, that extensive use of timers drains my battery extremely: 70% in 5 hours.
 
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deleting all 3rd party apps definitely helped. just slept 8 hours and lost 8% battery sleep tracking; yesterday, if anything my battery was better than 10.0.1. The day before with third party apps installed it was dead by dinner.
 
As I can't believe a 3rd party app can drain battery in background (due to watchOS design and rules), I suspect deleting the apps has, by side effect, "repaired" a broken sync process between watch and iPhone.
It would be interesting to reinstall the apps, one by one and see how it goes.
 
Hello everyone. I thought the problem
Was the watchOS 10 but it was the battery. Charge your Apple Watch to 100 and turn it off. Leave it like that for 8 hours. Turn on and see the battery level. Mine was 70% so I went to an Apple store
 
That curves look like mine - and I am unhappy, too. That's the reason why I wait on 10.0.1 (AW5) and fear, that newer versions are worse.
I had my bread-baking-day yesterday. And I made my observation again, that extensive use of timers drains my battery extremely: 70% in 5 hours.
Wow. Well, I do use a fair number of timers from the stock timer app throughout the day. But ideally, that shouldn’t be a big battery tax.
 
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