Wi-Fi and Bluetooth constantly scan for signals in the background — toggling them off via Win+A Action Centre saves meaningful battery during offline focus sessions.
Hover over the battery icon in the Taskbar to see exact percentage and estimated time remaining, or go to Settings → System → Power → Battery for full battery details.
Modern Standby keeps Windows 11 in a low-power state while still receiving emails and notifications — like a smartphone sleep mode, but for your laptop.