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3–20 Hardware and Software Guide
Power
How to Calibrate
To calibrate a battery pack, you must fully charge, fully
discharge, and then fully recharge the battery pack.
Charging the Battery Pack
Charge the battery pack while the notebook is on. To charge the
battery pack:
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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.
1. Insert the battery pack into the notebook.
2. Connect the notebook to external power through the
AC
adapter or an optional Automobile Power
Adapter/Charger or Auto/Air/AC Adapter. (The notebook
battery light is on as the
battery pack charges.)
3. Leave the notebook connected to external power until the
battery pack is fully charged. (The notebook battery light is
turned off.)
Discharging the Battery Pack
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CAUTION: To prevent loss of work, save your work before beginning
an unattended discharge procedure.
The notebook must remain on throughout the discharge process.
The battery pack can discharge whether or not you are using the
notebook, but the battery pack will discharge faster if the
notebook is in use.