What is XBox Device Status?
XBox Device Status (XBDS) is an application specifically designed for showing the battery status of XBox control pads and headsets that are connected to Windows computers.
XBDS shows the battery status in its modern-style interface and via an icon in the system tray.
Please note that the Free edition of XBDS only displays the first gamepad and its battery power; the Home (and Enterprise) edition provides additional features and ensures that the development of XBox Device Status can continue.
Please see the comparison chart here for further information.