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User's Manual
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 to conserve
battery power. This mode has the following options:
• Processing speed
• Display auto off
• HDD auto off
• System auto off
• LCD Brightness
❑ How often and how long you use the hard disk and the diskette 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 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
When you turn off your computer with fully charged batteries, the batteries retain
data for the following approximate time periods:
Battery pack (3600 mAh) 5 days (Resume mode)
30 days (Boot mode)
RTC battery 1 month