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Responding to low-power messages
When the battery runs low, the computer displays a series of
What you should do
When you see a
mPlug in the power adapter, or
mSave your work and put the computer to sleep, then
mReplace the empty battery with a charged one within two minutes.
IMPORTANT Always save your work when you see a
What you should know
When the first
If you continue to work without plugging in the power adapter or changing the battery, the computer displays a second
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
Note: When connected to a minidock with an external monitor attached or to certain docks from manufacturers other than Apple, the computer shuts down rather than going to sleep after the third warning message.
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 charged battery.
If you can’t plug in the power adapter, the contents of RAM are retained in sleep for about a day (as long as you don’t remove the battery).
64Chapter 5