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Responding to low-power messages
When the battery runs low, the computer displays a series of low-power
messages. The work time remaining after you see the first message varies
depending on how you are using the computer. It’s a good idea to act
promptly.
What you should do
When you see a low-power message, you should do one of the following:
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Plug in the power adapter.
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Save your work and put the computer to sleep.
What you should know
The first low-power message is a reminder that the battery will soon run out.
When this message appears, the screen brightness dims automatically to save
power.
If you continue to work without plugging in the power adapter or changing
the battery, the computer displays a second low-power message.
The second message is followed by a third and final message indicating that
the computer is about to put itself to sleep. Within a few seconds, the
computer goes to sleep automatically to protect the contents of RAM. All
activities are interrupted. It’s a good idea to save your work when you see the
first two low-power messages to make sure you don’t lose information.
If you continue working until the computer goes to sleep automatically, you
can wake it again as soon as you plug in the power adapter or replace the
battery with a fully charged battery.
If you can’t plug in the power adapter, the contents of RAM are retained in
sleep for about a day. If you recharge or change the battery within a day, you
should be able to wake the computer and resume work where you left off.
IMPORTANT
Recharge a depleted battery as soon as possible. Leaving a
depleted battery in the computer for more than several months, or in a hot
location (such as the trunk of a car) for longer than two weeks, may damage
the battery so that it can’t be recharged. If this happens, you need to replace
the battery.
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Power Management