107
Mobile Computing
Charging the batteries
5.375 x 8.375 ver 2.3
TECHNICAL NOTE: When your computer is using all of the
power provided by the AC Adapter to run applications,
features, and devices, the recharging of the battery cannot
occur. Your computer’s Power Saver utility can be used to
select a power level setting that reduces the power required for
system operation and will allow the battery to recharge.
The battery may not start charging immediately if:
❖The battery is extremely hot or cold.
To ensure that the battery charges to its full capacity, wait
until it reaches room temperature (50 to 80 degrees
Fahrenheit, 10 to 26 degrees Celsius).
❖The battery is almost completely discharged.
Leave the power connected, and the battery should begin
charging after a few minutes.
HINT: Once the battery is fully charged, we recommend that
you operate your computer on battery power until the battery
discharges completely. Doing this extends battery life and
helps ensure accurate monitoring of battery capacity.
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.