User’s Manual 6-11
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 TOSHIBA Power Saver, to conserve battery
power. This mode has the following options:
■ CPU Precessing speed
■ Screen brightness
■ Cooling Method
■ System standby
■ System Hibernation
■ Monitor Power off
■ HDD Power off
■ How often and how long you use the hard disk, optical disc and the
floppy disk drive.
■ How much charge the battery contained to begin with.
■ How you use optional devices, such as a PC card, to which the battery
supplies power.
■ Enabling Standby 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.
High Capacity battery pack (8800mAh)
about 5 days (Standby mode)
about 55 days (Boot mode)
Battery pack (4400mAh)
about 3 days (Standby mode)
about 25 days (Boot mode)
RTC battery
30 days
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