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Traveling with Your Computer
Using Battery Power
To respond to a low-battery warning
The computer automatically alerts you when the battery power drops to a critically low
level. The computer first emits a high-pitched beep. Then, if you do not restore power
within a short time, the computer goes into Hibernate mode.
Once the computer enters Hibernate mode, you won't be able to turn it on again until you
restore power by doing one of the following:
• Replace the battery with a charged one. See "Step 1 – Install the battery" on page 16.
• Plug in the ac adapter. See "Step 2 – Connect ac power" on page 18.
• Install a charged secondary battery in the plug-in module bay.
Note
If you plug in the ac adapter, you can continue to work while your battery recharges.
Startup Guide
31
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Troubleshooting
