Apple watch battery draining quickly after iOS 26.0.2 Update.

Battery power draining quicker after latest update. Battery fully charged and after 7 hours is down to 23%. Battery Capacity is at 72%. No apps running. 1 day earlier I used the SwingU golf app on watch and battery drain to 0% after 4.5 hours. This was not a problem prior to update.

iPhone 15

Posted on Oct 6, 2025 5:49 PM

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Question marked as Top-ranking reply

Posted on Oct 31, 2025 12:59 AM

Downgrading watchOS is only supported for a short time after the latest watchOS update.


First, try to force restart your iPhone and Apple Watch:

Force restart iPhone - Apple Support

To force restart your watch, press and hold the Digital Crown and the Side button together for about 10sec, until the Apple logo comes back again.


If this does not help, unpairing and connecting it again to your iPhone without using the latest backup would be the next step, to rule out defective data in the backup. You should only lose watch faces that you have set up, your Health data is stored in iCloud and will sync back.

Unpair and erase your Apple Watch - Apple Support

Set up your Apple Watch - Apple Support







63 replies

Dec 2, 2025 8:20 AM in response to capitan.pis

capitan.pis wrote:

Please read the complete thread

I have.


it took me 2, 3 months to get it back to normal, and I was not the only one.

Then there is something else wrong. It's not the update. Perhaps read what I wrote?


My watch is an 8 series watch and when it was new it lasted about 30 hours between recharge

Then you had a special watch. Apple gave the running time as approximately 18 hours.


Apple Watch Series 8 - Technical Specifications - Apple Support

Within the usage, it started obviously losing capacity

Of course it did. Lithium ion batteries lose capacity over time. Your watch could be as old as three years. What do you see when you go, on the watch, to Settings>Battery>Battery Health>Maximum Capacity? If it's 80 percent or less, you need a new battery (or a new watch).


Genius Bar Reservation and Apple Support Options - Apple


Dec 5, 2025 8:43 AM in response to IdrisSeabright

Hi

If you really read the complete thread then you noticed there are quite few people that got the performance back only after a couple of months, not days. Yet you can carry on claiming otherwise. That's fine.


"

My watch is an 8 series watch and when it was new it lasted about 30 hours between recharge


Then you had a special watch. Apple gave the running time as approximately 18 hours.

"


Very special indeed!

The watch is an 8series from Feb 2023.


its battery health is 85% STILL!


and .... hold yourself tight!! it lasted not only 18 hours but 22 hours and it still has 10% capacity to go :))))) (notice the time last recharge ended and the time the picture was taken.



BTW, that day i worked out two hours. If I don't work out it can last even more.


See how special my watch is ??







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Apple watch battery draining quickly after iOS 26.0.2 Update.

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