User Guide
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The power meter icon shows a low or critical battery notication.
NOTE: For additional information about the power meter, see Using the power meter and power
settings on page 28.
The computer takes the following actions for a critical battery level:
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If Hibernation is disabled and the computer is on or in the Sleep state, the computer remains briey in
the Sleep state and then shuts down and loses any unsaved information.
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If Hibernation is enabled and the computer is on or in the Sleep state, the computer initiates
Hibernation.
Resolving a low battery level
Resolving a low battery level when external power is available
Connect one of the following to the computer and to external power:
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AC adapter
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Optional docking or expansion device
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Optional power adapter purchased as an accessory from HP
Resolving a low battery level when no power source is available
Save your work and shut down the computer.
Resolving a low battery level when the computer cannot exit Hibernation
1. Connect the AC adapter to the computer and to external power.
2. Exit Hibernation by pressing the power button.
Running on AC power
For information about connecting to AC power, refer to the Setup Instructions poster provided in the computer
box.
The computer does not use battery power when the computer is connected to AC power with an approved AC
adapter or an optional docking/expansion device.
WARNING! To reduce potential safety issues, use only the AC adapter provided with the computer, a
replacement AC adapter provided by HP, or a compatible AC adapter purchased from HP.
Connect the computer to AC power under any of the following conditions:
WARNING! Do not charge the computer battery while you are aboard aircraft.
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When charging or calibrating a battery
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When installing or updating system software
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When updating the system BIOS
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When writing information to a disc (select products only)
30 Chapter 6 Managing power