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Mobile Computing
Running the computer on battery power
5.375 x 8.375 ver 2.3
Charging the batteries
Battery charge time may vary depending on the applications,
power management settings, and features used.
To charge the main battery while it is in your computer, plug
the computer into a live electrical outlet. The battery charges
whether the computer is on or off.
The main battery light (
) glows amber while the battery is
being charged, and glows green when it is fully charged.
The 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 RTC battery.
During normal use, the main battery keeps the RTC battery
adequately charged. Occasionally, the RTC battery may lose
its charge completely, especially if you’ve had the computer
turned off for a long time.
TECHNICAL NOTE: The RTC battery does not charge while the
computer is turned off, even when AC power is attached.
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.
NOTE