watchOS 26 Drastically Draining Battery

I have a Series 6 watch. Even with a Battery Health of 80% it would make it through at least 26 hours of use. After the upgrade to watchOS 26, that dropped to less than 20 hours.


Chasing a fix I went into settings and turned OFF:

  • Always On
  • Allow Live Activities
  • Background App Refresh
  • Reduced Haptics from Prominent to Default
  • Music - Auto Download
  • Messages - Notification Off
  • Stand Reminders
  • Likely more I don't recall at the moment


So, with 26, I have lost functionality over what I had and still get barely 20 hours.


The battery discharge graph shows no spikes. Just a steady decline. With no detail on what App(s) are consuming battery it is a shot in the dark on trying to resolve the issue.


Looking at the Watch app on my iPhone, under General > Diagnostic Logs there are a large number of entries. When you click on the Download icon the files don't appear to be stored anywhere under the Files (or new Preview) such that they can be opened and read.


Looking for any thoughts I may have missed in trying to restore the life and use of my watch.

Apple Watch Series 6, watchOS 26

Posted on Sep 18, 2025 7:43 AM

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Question marked as Top-ranking reply

Posted on Oct 10, 2025 4:33 AM

This might some people, after days of having a quick draining battery on my series 6 watch, i found that i had apps open in the back ground, To see open apps on your Apple Watch, quickly double-press the Digital Crown

One of them was a golf app that was probably use the GPS on the watch all day everyday, once i closed all the apps it was back to normal.

Strangely turning the watch off and on didnt close the apps, they were still open in the back ground.

i did check the diagnostic logs and shared them to gemini AI to find out what was causing the issue and it was something constanly pinging the gps location

68 replies

Sep 25, 2025 10:45 PM in response to TrafGib

Thought I’d chime in as well. I have an OG Ultra 1. Before watch OS 26 I was able to charge every other night (of course some variation depending on activity level). And on average the watch would be about 20% when I’d charge it. It’s still not terrible, however I’m finding it dies before I can make it to that second night, at around 9pm.


Of course I could change to a “charge every night” schedule. But the point is I’m annoyed my watch has lost about 25% capacity from an update that hasn’t really provided me any benefits.

Sep 26, 2025 10:00 AM in response to TrafGib

Honestly, nothing works. I think it is shady that Apple won't admit the problem. I spent over three hours in all with different customer service people trying to fix this. No one admits it is an issue caused by the update. They all just try to get me to replace my battery.


I got so frustrated I am trying out the AmazeFit bip 6. It has a lot of great features and 10 day battery life! Going well so far!

Oct 4, 2025 10:02 PM in response to TrafGib

I have 6. series watch 44mm and before update I wear watch all night and day and charge after workout on 7pm. When they are 100% charge, i took it to bed and they work another day. After 26.0.2 on morning after sleep I have 25-30% battery, so need charge, after charge i have 5-6 hour until watch are on zero. Update its terrible. I try unpair, I try restart, nothing help.

Oct 12, 2025 12:42 AM in response to TrafGib

I’m having the same issue over here with a series 8. Two days ago this stupid thing started draining and being dead within the same day. By this I mean I’m up at 3 am ands it’s dead within 12 hours. Powering off and everything. I have 85% battery health. I’ve taken some of the suggestions here and hopefully it helps. If Apple is doing this to force users to buy new and they don’t fix the issue. This long time Apple user will change to other options for everything.

Oct 29, 2025 10:04 AM in response to alari97

alari97 wrote:

In normal world, "Apple Green world", isnt ( idk ) 0-to something to change battery?
I mean 50 is half. 80 is 80 and almost like new?

This is not an Apple thing. It's the way lithium-ion batteries work. I suppose that all the manufacturers could get together and agree that 80% is the new 0%. But it wouldn't change how the batteries function.

Nov 2, 2025 9:26 AM in response to TrafGib

I am so frustrated w how my battery drains now. Sometimes I barely get 12 hours. This watch is not even a year old. I have force quit several times. It makes a momentary difference. But my battery can go from 100% to 70% in a couple of hours doing absolutely nothing. If I go for a walk and use the fitness app, it almost completely drains the battery. Ugh. I am really hoping Apple figures out a way to fix this or this will be my last watch w them.

watchOS 26 Drastically Draining Battery

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