Apple Watch Series 9 Now Always Charges to 100%

I have a 45mm Series 9 Apple Watch and after a few days of use it started charging to 80%. Then a little more than a week ago, it went back to charging to 100% every night and I can't think of a reason why my usage pattern would have changed. Is there any way to get it to go back to optimized charging so my battery life would not be decreased?

Apple Watch Series 9, watchOS 10

Posted on Sep 5, 2024 8:39 AM

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Question marked as Top-ranking reply

Posted on Sep 5, 2024 10:51 AM

Make sure that Optimized Charge Limit is on.


To turn on Optimized Charge Limit on Apple Watch Series 9 or Apple Watch Ultra and later:

  • Open the Settings app on your watch.
  • Scroll down, then tap Battery.
  • Tap Battery Health.
  • Turn on Optimized Charge Limit.


M1 Mac mini, macOS 14.6.1;  Watch, series 7 GPS/cellular, watchOS 10.6; iPhone 12 Pro, iOS 17.6.1; TV 4th Gen, tvOS 17.6; HomePods, audioOS 17.6 and Airport Express w/ Airplay 2

3 replies
Question marked as Top-ranking reply

Sep 5, 2024 10:51 AM in response to TheBigCheese

Make sure that Optimized Charge Limit is on.


To turn on Optimized Charge Limit on Apple Watch Series 9 or Apple Watch Ultra and later:

  • Open the Settings app on your watch.
  • Scroll down, then tap Battery.
  • Tap Battery Health.
  • Turn on Optimized Charge Limit.


M1 Mac mini, macOS 14.6.1;  Watch, series 7 GPS/cellular, watchOS 10.6; iPhone 12 Pro, iOS 17.6.1; TV 4th Gen, tvOS 17.6; HomePods, audioOS 17.6 and Airport Express w/ Airplay 2

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Apple Watch Series 9 Now Always Charges to 100%

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