Traveling with Your Computer
Using Battery Power
Reference Guide 49
• Set the automatic timeout settings to emphasize saving power. If your computer has a
dual-speed processor, use the lower speed on battery power (the default settings
conserve battery power). See “How the computer manages power automatically” on
page 42.
• If you have an I/O PC Card—that is, a PC Card having an external connection, such
as a network card—remove it when you’re not using it. Some I/O cards use
significant power even while they’re inactive.
• If you work with an application that uses the serial port or an I/O PC Card, exit the
application when you finish using it.
• Install a secondary battery—see “To install a secondary battery” on page 48.
• If your main battery is rated at 11.1 volts (check its label), purchase a replacement
main battery, which is rated at 14.8 volts.
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