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Mobile Computing
Running the computer on battery power
5.375 x 8.375 ver 2.3
5 Charge the battery pack until the Battery LED glows
blue.
❖ If you have extra battery packs, rotate their use.
❖ If you will not be using the system for an extended
period, more than one month, remove the battery pack.
❖ Disconnect the AC adapter when the battery is fully
charged. Overcharging makes the battery hot and
shortens life.
❖ If you are not going to use the computer for more than
eight hours, disconnect the AC adapter.
❖ Store spare battery packs in a cool dry place out of direct
sunlight.
Charging the RTC battery
Your computer has an internal real-time clock (RTC) battery.
The RTC battery powers the System Time Clock and BIOS
memory used to store your computer’s configuration settings.
When fully charged it maintains this information for up to a
month when the computer is powered off.
The RTC battery may have become completely discharged
while your computer was shipped, resulting in the following
error message during startup:
BAD RTC BATTERY
BAD CHECKSUM (CMOS)
CHECK SYSTEM
To recharge the RTC battery, connect the computer and leave
it powered on for 24 hours.
