I’ve never experienced that before watchOS 26 update.
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Ultra 2 drains more battery unused during night
- Thread starter kristof461
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I’ve never experienced that before watchOS 26 update.
Have you rebooted watch and phone?
Have you checked your background app refresh settings?
How does the iPhone fare during that time, any unusual drain?
iPhone 16 Pro with iOS 26 is pretty ok. I didn’t see any draining. I performed hard reset on iPhone but not on Apple Watch. I gave it a chance to index everything. I thought it was enough when next 3/4 night were fine. Unfortunately I was wrong. Today I hard reset AW and we will see.
Most app have background activity turned off. Not all of them but nothing has changed since previous watchOS. I don’t add any app etc.
Most app have background activity turned off. Not all of them but nothing has changed since previous watchOS. I don’t add any app etc.
When I wear my U2 for sleep tracking I lose around 10% of battery. So something is obviously going on, did you install 26.02 yet?
To be honest 10% isn’t that bad. What was previous result for you? My watch has been losing 6-7% with low battery mode and laying on a drawer.
Yes I just installed 26.0.2 but also hard reset it. So I won’t know what helped of any of that.
Yes I just installed 26.0.2 but also hard reset it. So I won’t know what helped of any of that.
With my U2 sleep tracking has always used around 8-10%, with my S7 around 15-20%.
Give it a week or so to really judge battery life.
Also, when I charge my U2 it’s always to 100% and I do that every other night after about 38hrs of continuous wearing it. The night it charges I wear my S7 for sleep tracking.
Yesterday everything is fine but I will keep an eye on that. I updated to 26.0.2 and did hard reset as mentioned before.
For now it looks like that my Apple Watch drains 3-4% per 2h. It means 50h-66h without workout (I am sick right now so I can’t check this one). Mostly in range of WiFi. Is it good or not…not bad for sure. Maybe even regular result.
For now it looks like that my Apple Watch drains 3-4% per 2h. It means 50h-66h without workout (I am sick right now so I can’t check this one). Mostly in range of WiFi. Is it good or not…not bad for sure. Maybe even regular result.
obviously usage models will be different, what I can tell you is that I charge my 2 yr old U2 to 100%, wear it for ~ 38hrs (without taking it off, yes, I wear it in the shower, and yes, used for sleep tracking) and my battery life at the end of those 38hrs is ~ 30-35% (was better when new and before watchOS 26), that includes 2 workouts of ~ 150 minutes total. so that averages to ~ just under 2% per hour. And I do not have cellular enabled.
Here we go again. Latest watchOS. Performed hard reset. And again 2/3 night with regular 7/8% drainage and then boom nearly 30% the next day. I will call Apple because something is off and now idea what it can be
If you’re not using it, turn WiFi off in watch settings and see if that helps some
Two days ago I saw that after a shower my watch lost 4-5%. So again something was wrong. I turned off wifi and it worked. But I wasn't sure if it was a wifi or just taping my watch. I made a phone call with Apple yesterday and they saw that something is off with battery. It looks like device is trying to sync something but they don't what. Maybe they need logs for that. Anyway they suggested to change region to US and back to native one.On iPhone and watch. Assistant said that it resets most stuck processes in the background. After that I left Ultra 2 for a night and it was fine but it's too soon judge
Did you do any long runs or races with the Apple Watch Ultra?
Had any apps ran in the background for a long time including any workout or health related apps?
I did some cycling or runs with ultra 2 but what’s is your point? There was no clear pattern why it drains more this day or another.
anyway. It looks like a tip from technician helped. I didn’t see any extended draining.
anyway. It looks like a tip from technician helped. I didn’t see any extended draining.
So how long did you race or ride with your Apple Watch Ultra 2?
Was low power mode used?
I didn't do any race or ride during the same day when AW was draining over night.
And yes I am using low power mode during workout.
Sleep tracking? Do you track workouts on a third party app like Nike Run Club or Strava, or use first party workout app? Usually with my series 6 it drains more on Nike Run Club if used alone without starting the run from my iPhone, over fitness+ or regular workout app.
Running beta watchOS 26.1, or public release?