Apple Watch Battery Drain after updating to 10.4

My watch is 6 months old (Series 9.) The battery would last at least two days. After updating to Watch OS 10.4 it drains down to nothing in less than one day. So infuriating.

Thank you. I just did the unpair, erase and re-pair now. Fingers crossed it will do the trick for me too. Agreed, extremely frustrating that it's happening at all.

Update:

after un-pair and re-pair, Apple Watch Ultra 2 has returned to normal. Have lost 20% of battery in about 20 hours. Before the re-repair (post 10.4 update) it was loosing 80%+ in about 6-7 hours. So seems to be fixed now.

UPDATE: Mine is now working as expected after I un-paired, erased and re-pared the watch with my phone.

Apple Watch Ultra 2. This watch has been stellar battery life. Almost 3 full days (including sleep each night). Upgrade to 10.4, and now I get 6-7 hours and it’s fully depleted. Insanely fast drain. Going to try unpair and re-pair tomorrow as others have tried here.

I have exactly the same problem after the update to 10.4. My apple watch was doing fine before the update. Now the drain is unacceptable. The charging was much slower than before too.

Sad!

Me too, this is happening to me.

I've completely reset my Apple Watch 7 but the battery still seems to drain quickly. Also my watch seems to constantly lock when on my wrist too.

Although I did restore from a back-up.

I too can confirm that the battery drain was horrible after the 10.4 update but unpairing and restoring from a very recent backup completely fixed the issue. A restore on Apple Watch is definitely one of the easier restores for Apple Products.

Apple Watch SE worn regularly with no issue til update to iOS 10.4 last week. 30 mins exercise today and it’s gone from 100-30%!!! Ridiculous! It was a steady walk with NO notifications during it. No heart rate monitor on.

please resolve this or I’m going to Garmin with many others

Apple will never respond to anything here. This is a user to user forum. If you want a response to an issue from an Apple representative, contact them.

For what it's worth, I was having issues with battery health (even with the latest 10.5). I unpaired and set up my Series 8 as new (not from a backup). It's so much better now. I usually put it on at about 5:00 am and take it off at 9:00 pm and the battery is still at about 50%. This includes 60-90 minutes of Workout with downloaded music playing thru the watch. You might want to try resetting it as new.

PB88_ wrote:

As I said down thread, if Apple does not monitor this forum even more shame on them.

Apple provides lots of free ways to report issues to them:

• Feedback - Watch - Apple
• Telephone support
• messaging support
• genius bar support
• bug reporting via a free Apple developer account.

The discussions.apple.com forums have the 1,000’s of messages per day. And many of them are poorly formed posts, lacking detailed information.

Where as the customer support can interact and in realtime get those details.

discussions.apple.com is for users to talk among themselves. And we do.

Planning to go into the store and see what they can do about it tomorrow. In the past week, it dramatically drained each day.

My spouse and my watches (series 4 and series 8) both drain to nothing by midday with this update.