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Mobile Computing
Conserving battery power
What to do when the battery runs low
When the battery runs low you can:
❖ Plug the computer into an external power source and recharge
the battery.
❖ Put the computer in Hibernation mode and replace the battery
with a charged spare.
❖ Save your work and turn off the computer.
If you don’t manage to do any of these things before the battery
completely runs out of power, the computer automatically enters
Standby mode and turns itself off. Standby mode keeps track of
where you were so, when you turn on the power again, you can
continue where you left off.
The computer stores information on what you were doing until the
battery runs out of power. If you have Hibernation mode enabled
(the default), the computer copies the details of your open
programs and files to the hard disk before shutting down.
Conserving battery power
How long a fully charged battery pack lasts when you are using
the computer depends on a number of factors, such as:
❖ How the computer is configured
❖ How much you use the display panel instead of an external
monitor
❖ How much you use the hard disk and other drives
❖ Whether you use any optional devices to which the battery
supplies power
❖ Where you are working — since operating time decreases at
low temperatures