Power
Hardware and Software Guide 3–15
A battery pack inserted in the notebook charges whether the
notebook is off or in use, but the battery pack charges faster while
the notebook is off. Charging may be delayed if a battery pack is
new, has been unused for 2 weeks or more, or is much warmer or
cooler than room temperature.
The battery light displays charge status:
■ On: the battery pack is charging.
■ Blinking: the battery pack has reached a low-battery
condition and is not charging.
■ Off: the battery pack is fully charged or not installed.
For information about determining the amount of charge in a
battery pack, refer to the “Monitoring the Charge in a Battery
Pack” section next in this chapter.
Monitoring the Charge in a Battery Pack
Obtaining Accurate Charge Reports
To increase the accuracy of battery charge reports:
■ Allow a battery pack to discharge to about 10 percent of a full
charge through normal use before charging it.
■ When you charge a battery pack, charge it fully. The charge
may be reported inaccurately until the battery pack has been
fully charged at least once, even for new battery pack.
■ If a battery pack has been unused for one month or more,
calibrate the battery pack instead of simply charging it.
For information about battery calibration, refer to the
“Calibrating a Battery Pack” section later in this chapter.
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