How do I know how much battery life my laptop has left?
To see the main batteries total available power hover your mouse over the battery icon or click the battery icon located in the Systray (lower right portion of your screen) as shown in the picture.
Some computer batteries also have the ability to be checked the amount of battery life on the battery itself. For example, in the picture below is an example of a battery check found on the side of the battery. Pressing the button with the finger symbol will light up the percentage of battery life left, if any.