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 February 2021 using preproduction Windows 10 software and preproduction 13.5” Intel® Core™ i5, 512GB, 8 GB RAM device. Up to 17 hours of battery life based on typical Surface device usage Surface Laptop 4 13.5” Intel® Core™ i5 512GB, 8 GB RAM.Testing conducted by Microsoft in February 2021 using preproduction Windows 10 software and preproduction 15” AMD Ryzen™ 7 Microsoft Surface® Edition processor, 8GB RAM device.
Up to 17.5 hours of battery life based on typical Surface device usage
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