watchOS 10 beta 4 gets optimized charge limits and more

Apple has just released the fourth beta of watchOS 10 for developers. This update arrives two weeks after the public beta announcement and three weeks after the release of the third beta.

watchOS 10 is a milestone update that is steadily improving with each incremental beta upgrade, and the same can be said for today’s update. It brings the optimized charge limit feature and estimates battery levels accurately.

Apple pushes the watchOS 10 fourth beta with a 21R5320i build number. It is a big software upgrade that weighs around 545MB in download size. Currently, it is limited to the developers, we can expect a new public beta release in a matter of time, which will also be the first public beta for the Apple Watch.

If you are a developer, then you can freely install watchOS 10 beta 4 on your watch. For eligibility, make sure you own Apple Watch Series 4 or newer model to access the watchOS 10 beta.

In terms of changes, the official release notes confirm two big changes coming with today’s update which includes the addition of an optimized charge limit feature as well as better estimates for battery levels on the Apple Watch Series 6 (40mm).

  • New Feature
    • Optimized Charge Limit is now available on Apple Watch SE, Series 6, Series 7, and Series 8. See About Optimized Battery Charging on your Apple Watch for more information. (110117793)
  • Resolved Issues
    • Fixed: Apple Watch Series 6 (40mm) estimates maximum battery capacity more accurately. (109589671)

watchOS 10 Fourth Beta

If your iPhone or iPad is running on the latest version of iOS 17 fourth developer beta or public beta, then you can easily sideload the watchOS 10 beta on your Watch.

  1. Open the Watch app on your iPhone.
  2. Tap General > Software Update.
  3. Select Beta Updates and enable watchOS 10 Developer Beta option.
  4. Go back and download the third beta of watchOS 10.
  5. That’s it.

Make sure that your Apple Watch is charged at least 50% and connected to a WiFi network. After installing the beta profile, open the Apple Watch app on your phone, head over to General > Software Update > Download and Install, then install the new software.

Now the watchOS 10 fourth beta will download and transfer to your Apple Watch. And after the completion of the installation process, your watch will restart. Once all done, you can start using your Apple Watch.

If you’ve any query, let us know in the comment section. Also, share this article with your friends.

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Haneet Singh

Haneet is the Founder and Editor-In-Chief of YTECHB. He has a huge passion for tinkering with latest smartphones, wearables, smart home devices, smart TVs, and more. As an avid Apple Ecosystem user, he loves customizing his iPhone and iPad to suit his needs. For tips, you can connect Haneet at In 2019, Haneet and the YTECHB team exclusively shared the wallpapers of iPhone 11 right before the launch event. In 2020, Haneet alongside his team members shared exclusive renders and official photos of two Samsung Galaxy smartphones - the Galaxy M11, and Galaxy M21. Later, the YTECHB team leaks information about Motorola's feature phones and Razr 3. In the last few months, our team shared Galaxy S24 Ultra leaks and more. You may come across his work getting mentioned in The Times of India, India Today, Hindustan Times, NDTV, TechRadar, Digital Trends, Yahoo News, GSMArena, Android Authority, Android Central, Android Headlines, SamMobile, XDA, 9to5Google, and many other publications. He works across news, updates, features, guides, and more. If YTECHB writes about it, you can expect him to be involved in some way.

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