The active use portion consists of (1) a web browsing test accessing 8 popular websites over multiple open tabs, (2) a productivity test utilising Microsoft Word, PowerPoint, Excel and Outlook, and (3) a portion of time with the device in use with idle applications. Testing consisted of full battery discharge with a mixture of active use and modern standby. Testing conducted by Microsoft in September 2020 (Surface Pro X with Microsoft SQ® 1 and Surface Pro X with Microsoft SQ® 2) using preproduction software and preproduction configurations of Surface Pro X. Surface Pro X with LTE Advanced Pro: Up to 15 hours of battery life based on typical Surface device usage.

Battery life varies significantly with settings, usage and other factors.

All settings were default except screen brightness was set to 150 nits with Auto-Brightness disabled.

Testing conducted by Microsoft in August 2021 using preproduction software and preproduction Surface Pro X with Microsoft SQ® 1 and Surface Pro X with Microsoft SQ® 2, 256GB, 8GB RAM devices. Surface Pro X: Up to 15 hours of battery life based on typical Surface device usage.Please refer to this page for more details Internet access required, ISP fees may apply. *** Chatting via SMS is available in limited countries and will be made available to other geos on a rolling basis.App availability and compatibility may vary. Only Surface Pro Signature Keyboard has Surface Slim Pen 2 storage and charging capabilities. Surface Pro Signature Keyboard and Surface Pro X Keyboard are sold separately. * Some software, apps and accessories sold separately.Certain features require specific hardware (see Windows 11 Specifications). ^ Pen storage and charging available on selected Keyboards.

Microsoft surface pro x 13