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3 Using external AC power
External AC power is supplied through one of the following devices:
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.
●
AC adapter included with the computer
●
Optional docking device or expansion product
●
Optional power adapter
Connect the computer to external AC power under any of the following conditions:
●
When you are charging or calibrating a battery
WARNING! Do not charge the computer battery while you are onboard aircraft.
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When you are installing or modifying system software
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When you are writing information to a CD or DVD
When you connect the computer to external AC power, the following events occur:
●
The battery begins to charge.
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If the computer is turned on, the battery meter icon in the notification area changes appearance.
When you disconnect external AC power, the following events occur:
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The computer switches to battery power.
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The display brightness is automatically decreased to save battery life. To increase display
brightness, press the fn+f8 hotkey or reconnect the AC adapter.
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