Apple watch series 10 running IOS 11.0 draining battery life.

I got my Series 10 on Friday, paired it Saturday, and after power cycling it Sunday and Monday, it is sipping battery and at the end of the day, I have lots of charge left. I do a quick charge, and then sleep monitoring over night, and I have at least 85% battery in the morning.

It will take 24-48 hours for the new operating system to finish it house keeping, as well as resync things it wants from the iPhone. Power cycle the Apple Watch and your iPhone (at least once, but maybe once or twice a day until the Apple Watch battery consumption returns to normal. The MacObserver.com How To Fix WatchOS 10.3 Battery Drain Issue on Apple Watch https://www.macobserver.com/tips/how-to/fix-apple-watch-battery-drain-issue-after-watchos-10-3-update/ Also see: https://discussions.apple.com/docs/DOC-250007078 For some steps that are not in the MacObserver article. iPhone -> "Watch" app -> General -> Reset -> Reset Sync Data Again it may take a day or two for the rsync'ing of data to settle down. As a point of reference, my Apple Watch Series 4 with 90% battery health maximum capacity, was back to normal after 24 hours (watchOS 10.5). I did 1 mid-day recharge, and I power cycled my Apple Watch and iPhone twice.

After an OS update, it's common to experience an increased battery drain as certain tasks related to the update continue in the background including indexing, you should only experience this increased battery drain for a few days before it goes back to normal.

Jeremy1019 wrote:

I bought my watch on September 21st, its been 5 days. How many days does it take usually?

I would say give it a week. If your battery is still not back to normal, I would recommend unpair and repairing your Apple Watch with your iPhone ⇢ Unpair and erase your Apple Watch - Apple Support

Jeremy1019 wrote:

Thank you so much I will do that and report back.

You are very welcome. Keep us posted, have a great day.

having the same issue, was wondering if it could be the always on ticking all the the time?