Toshiba Portege 2010 User Guide 1 - Page 83

Mobile Computing Conserving battery power 83 ❖ Connect the computer to the optional high-capacity battery. ❖ Save your work and turn off the computer. If you don't manage to do any of these things before the main battery completely runs out of power, the computer automatically enters Hibernation mode and turns itself off. Hibernation mode keeps track of where you were so, when you turn on the power again, you can continue where you left off. The computer stores information on what you were doing until the main battery runs out of power. If you have Hibernation mode enabled (the default), the computer copies the details of your open programs and files to the hard disk before shutting down. Conserving battery power How long a fully charged battery pack lasts when you are using the computer depends on a number of factors, such as: ❖ How the computer is configured. ❖ How much you use the display panel instead of an external monitor. ❖ How much you use the hard disk and other drives. ❖ Whether you use any optional devices to which the battery supplies power. ❖ Where you are working-since operating time decreases at low temperatures. Toshiba's power-saving options greatly increase the length of time you can use the computer before having to recharge the main battery. Toshiba has combined these options into several preset power usage modes.