Toshiba Satellite P100-ST1072 User Manual - Page 125

Monitoring battery capacity, Maximizing battery operating time

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Power and Power-Up Modes Monitoring battery capacity Remaining battery power can be monitored by the Power Options. Refer to Special features in Chapter 1, Satellite P100 / Satellite Pro P100 Series Features. ■ Wait for a moment 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. ■ With repeated discharges and recharges, the battery's capacity will gradually decrease. Therefore, an often used, older battery will not operate for as long as a new battery even when both are fully charged. 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 to conserve battery power. This mode has the following options: ■ Display auto off ■ Hard Disk Drive auto off ■ System auto off ■ LCD brightness ■ How often and how long you use the hard disk, CD-ROM and the diskette drive (if one is connected). ■ 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 Resume 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 (standby mode) When you turn off your computer with fully charged batteries, the batteries retain data for the following approximate time periods: Battery Approximately 1.5 days (Standby mode) Approximately 1 month (Shut down mode) RTC battery Approximately 1 month User's Manual 6-9

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User’s Manual
6-9
Power and Power-Up Modes
Monitoring battery capacity
Remaining battery power can be monitored by the Power Options. Refer to
Special features
in Chapter 1,
Satellite P100 / Satellite Pro P100 Series
Features
.
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 to conserve battery power. This mode has the following options:
■
Display auto off
■
Hard Disk Drive auto off
■
System auto off
■
LCD brightness
■
How often and how long you use the hard disk, CD-ROM and the
diskette drive (if one is connected).
■
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 Resume 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 (standby mode)
When you turn off your computer with fully charged batteries, the batteries
retain data for the following approximate time periods:
■
Wait for a moment 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.
■
With repeated discharges and recharges, the battery's capacity will
gradually decrease. Therefore, an often used, older battery will not
operate for as long as a new battery even when both are fully charged.
Battery
Approximately 1.5 days (Standby mode)
Approximately 1 month
(Shut down mode)
RTC battery
Approximately 1 month