Toshiba C650D PSC0YC-005026 Users Manual Canada; English - Page 117
Maximizing Battery Operating Time, Retaining Data with Power off, Retention Time
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Power and Power-up Modes Maximizing Battery Operating Time A battery's usefulness depends on how long it can supply power on a single charge. How long the charge lasts in a battery depends on: ■ How you configure the computer (for example, whether you enable battery-power saving options). The computer provides a battery save mode, which can be set in Power Options, to conserve battery power. This mode has the following options: ■ CPU Precessing speed ■ Screen brightness ■ Cooling Method ■ System sleep ■ System hibernation ■ Monitor Power off ■ HDD Power off ■ How often and how long you use the hard disk, optical disc drive and the diskette drive. ■ How much charge the battery contained to begin with. ■ How you use optional devices, such as an external monitor, to which the battery supplies power. ■ Enabling Hibernation and Sleep Mode conserves battery power if you are frequently turning the computer off and on. ■ Where you store your programs and data. ■ Closing the display when you are not using the keyboard saves power. ■ Operating time decreases at low temperatures. ■ The condition of the battery terminals. Make sure the battery terminals stay clean by wiping them with a clean dry cloth before installing the battery pack. Retaining Data with Power off When you turn off your computer with fully charged batteries, the batteries retain data for the following approximate time periods. Retention Time Battery type State and Retention Time Battery pack (3 cell) about 28 hours (Sleep Mode) about 11 days (Shut Down Mode) Battery pack ( 6 cell) about 40 hours (Sleep Mode) about 18.5 days (Shut Down Mode) User's Manual 6-9