Checking the Battery Level
By Operating System
You can check the approximate battery level using the battery meter
function of the operating system. To read the battery level in Windows, click
the battery icon on the taskbar.
By Gas Gauge
On the exterior side of the battery pack is a gas gauge for displaying the
estimated battery charge. When the battery pack is not installed in the
computer and you want to know the battery charge, you can press the
switch with a pointed device to see the corresponding value of indicator
segment that light green.