7–10 Power
Battery packs
How to calibrate
Three steps are involved in calibrating a battery pack: fully
charging, fully discharging, and then fully recharging.
Step 1: Charging the battery pack
A battery pack can charge whether the computer is off or in use,
but it will charge faster when the computer is off.
To charge the battery pack:
1. Insert the battery pack into the computer.
2. Connect the computer to an AC adapter, optional power
adapter, or optional docking device, and then plug the adapter
or device into external power.
The battery light on the computer is turned on.
3. Leave the computer plugged into external power until the
battery pack is fully charged.
The battery light on the computer is turned off.
Step 2: Discharging the battery pack
Before you begin a full discharge, disable hibernation, which is
enabled by default.
To disable hibernation:
1. Select Start > Control Panel > Performance and
Maintenance > Power Options > Hibernate tab.
2. Clear the Enable hibernation check box.
3. Click Apply.
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