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3–14 Hardware and Software Guide
Power
Battery Pack
Charging a Battery Pack
To prolong battery life and optimize the accuracy of battery
charge displays:
■ If you are charging a new battery pack:
❏ Charge the battery pack while the notebook is connected
to external power through the AC adapter.
❏ When you charge the battery pack, charge it fully.
■ If you are charging an in-use battery pack:
❏ Allow the battery pack to discharge to about 10 percent
of
a full charge through normal use before charging it.
❏ When you charge the battery pack, charge it fully.
A battery pack inserted in the notebook charges whenever the
notebook is connected to external power through an AC adapter
or
through an optional Expansion Base, Automobile Power
Adapter/Charger, or Auto/Air/AC Adapter.
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CAUTION: To prevent damage to the notebook and aircraft systems,
do NOT charge the battery pack while you are using an Auto/Air/AC
Adapter on an aircraft.
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 might 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.