Maximizing Battery Operating Time; Retaining Data With Power Off - Toshiba NB 100 Series User Manual

Wait at least 16 seconds after turning on the computer before trying to
monitor the remaining operating time. The computer needs this time to
check the battery's remaining capacity and to calculate the remaining
operating time, based on the current power consumption rate and
remaining battery capacity. The actual remaining operating time may differ
slightly from the calculated time.

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:
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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:
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How often and how long you use the hard disk, optical disc drive and
the diskette drive.
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How much charge the battery contained to begin with.
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Enabling hibernation and Standby mode conserves battery power if you
are frequently turning the computer off and on.
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Where you store your programs and data.
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Closing the display when you are not using the keyboard saves power.
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Operating time decreases at low temperatures.
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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 battery, the battery
retain data for the following approximate time periods.
User's Manual
CPU Precessing speed
Screen brightness
Cooling Method
System Standby
System hibernation
Monitor Power off
HDD Power off
Power and Power-up Modes
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