It’s a similarly impressive story when it comes to charging, although don’t expect smartphone-level speeds. That’s with the brightness set to relatively dim 120 nits, and so not necessarily reflective of real-world usage, but it’s now a device that can comfortably make it through a full 8-hour working day without the safety net of a mains socket. To learn how to upgrade your Surface, see Getting ready for the Windows 11 upgrade.I recorded just over 13 hours when playing a 720p video on loop, an above-average result compared to most laptops. You can also check on your own by going to Start > Settings > Update & Security > Windows Update > Check for updates. If you have a Windows 10 PC that's eligible for the upgrade to Windows 11, Windows Update will let you know when it's available. The free upgrade to Windows 11 is available based on hardware eligibility, reliability metrics, the age of your Surface, and other factors. How we're rolling out the free upgrade to Windows 11 Surface Book 2 (on 8th Gen Intel® Core™ i5-8350U or i7-8650U processor only) Surface models that can be upgraded to Windows 11

Use the PC Health Check app to find out if your device has any other requirements you need to meet (for example, Secure Boot capability). For more info, see Find out which Surface model you have. Look for your device in the list of Surface models that can be upgraded to Windows 11. If you're not sure which Surface device model you have, look in the Surface app. We'll continue to support at least one version of Windows 10 based on the support dates listed on the Windows 10 Home and Pro: Microsoft Lifestyle website. Note: Devices that can't be upgraded can continue running Windows 10.

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