97
Power Management
Running the computer on battery power
A battery may not start charging immediately under the following
conditions:
The battery is extremely hot or cold. To ensure that the battery
charges to its full capacity, wait until it reaches room
temperature.
The battery is almost completely discharged. Leave the power
connected and the battery should begin charging after a few
minutes.
The main battery charges the backup and RTC batteries.
During normal use, the main battery keeps the other batteries
adequately charged. Occasionally, the backup and RTC batteries
may lose their charge completely, especially if you’ve had the
computer turned off for a long time. To recharge:
The backup battery, plug the computer in and leave it turned
off
for two and a half to five hours.
The RTC battery, plug the computer in and turn it
on
for at
least 24 hours.
Monitoring battery power
The following information is for systems with the Windows
®
2000 Professional operating system. If your computer has
Windows
®
98 Second Edition operating system, refer to
“Determining remaining battery power” on page 228
The computer’s main battery light indicates the main battery’s
current charge, as follows:
Green indicates the AC adapter has fully charged the battery.
Amber indicates the AC adapter is charging the battery.
Off indicates that the battery is not being charged.
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