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■ Use the DVD drive only when necessary. These drives use a large
amount of power.
■ Recharge the battery often, take an extra battery, and fully recharge
the batteries before traveling. For more information, see “Recharging
the battery” on page 57 and “Changing batteries” on page 59.
Using alternate power sources
To extend battery life, use alternate power sources whenever possible.
■ If traveling internationally, take electrical adapters. Save the battery
for times when you cannot use a power adapter. If you plan on taking
your AC power adapter, also take a single-plug surge protector.
■ If you will have access to an EmPower™ in-flight power receptacle
or an automobile cigarette lighter, use an airplane/automobile power
adapter or power inverter. Save the battery for times when you
cannot use a power adapter.
■ To find AC power outlets in airports, look for them next to support
pillars, in large areas such as boarding gates, and under banks of
telephones.
Changing power modes
You can use the following power modes to lengthen the life of your
notebook’s battery:
■ Standby - while your notebook is in Standby, it switches to a low
power state where devices, such as the display and drives, turn off.
■ Hibernate - (also called save to disk) writes all current memory (RAM)
information to the hard drive, then turns your notebook completely
off. The next time you turn on your notebook, it reads the memory
information from the hard drive and opens the programs and
documents that were open when you activated Hibernate mode.
Using power saving modes
Always save your work before using Standby mode. In Standby mode,
your notebook reduces or turns off the power to most devices except
memory. However, the information in memory is not saved to the hard
drive. If power is interrupted, the information is lost.