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 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

Surface Laptop 4 15” AMD Ryzen™ 7 Microsoft Surface® Edition processor 8 GB RAM.

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 conducted by Microsoft in February 2021 using preproduction Windows 10 software and preproduction 13.5” AMD Ryzen™ 5 Microsoft Surface® Edition processor, 8GB RAM device.

Up to 19 hours of battery life based on typical Surface device usage Surface Laptop 4 13.5” AMD Ryzen™ 5 Microsoft Surface® Edition processor 8 GB RAM.See aka.ms/SurfaceBatteryPerformance for details. Battery life varies significantly based on usage, network and feature configuration, signal strength, settings and other factors.Microsoft 365 and some software and accessories sold separately.

Windows go laptop