Apple MacBook Pro (Late 2007, 2.4/2.2 GHz) - Manual (Page 30)

30 Chapter 2 Life with Your MacBook Pro
The amount of battery charge left can also be checked by viewing the Battery ( )
status icon in the menu bar. The battery charge level displayed is based on the amount
of power left in the battery with the applications, peripheral devices, and system
settings you are currently using. To conserve battery power, close applications and
disconnect peripheral devices not in use, and adjust your Energy Saver settings.
For more information about battery conservation and performance tips, go to
www.apple.com/batteries/notebooks.html.
Battery Indicator lights Button