Microsoft is testing a new feature called Adaptive Battery Saver Mode for Windows 11 devices, which adjusts battery usage based on workload rather than just battery level. Unlike traditional Energy Saver mode, it maintains screen brightness and allows background tasks to continue without interruption. This feature is currently being tested in the Canary Channel under build number 27898, and if successful, it will be rolled out to all Windows 11 devices. The development coincides with advancements in power-efficient processors from AMD, Intel, and Qualcomm, aimed at improving battery performance in Windows laptops.