
Battery life varies significantly with settings, usage and other factors. All settings were default except screen brightness was set to 150nits with Auto-Brightness disabled. 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 April 2020 using preproduction software and preproduction configurations of Surface Book 3 15” Intel® Core™ i7, 256GB, 16 GB RAM. Surface Book 3 for Business 15” connected to keyboard base: Up to 17.5 hours of battery life based on typical Surface device usage. Testing conducted by Microsoft in April 2020 using preproduction software and preproduction configurations of Surface Book 3 13.5” Intel® Core™ i5, 256GB, 8 GB RAM. Surface Book 3 for Business 13.5” connected to keyboard base: Up to 15.5 hours of battery life based on typical Surface device usage.Available storage is subject to change based on system software and updates and apps usage.

System software and updates use significant storage space.Restrictions apply. See Surface for Business warranty page for AES terms and conditions and list of supported markets.

