HP pavilion xu100 Service Manual
Batteries and Power Management
Using Battery Power
Using Battery Power
58 Reference
Guide
To get the longest operating time, wait until the battery’s charge is below 50% before
recharging, then charge it fully (100%). Charging can take up to approximately 2 hours.
You can continue working while the battery charges.
recharging, then charge it fully (100%). Charging can take up to approximately 2 hours.
You can continue working while the battery charges.
A fully charged battery can operate the computer for up to approximately 4 hours,
depending on your computer’s model, power management settings, and level of use.
depending on your computer’s model, power management settings, and level of use.
To use additional batteries
You can install a secondary battery in either or both of the expansion base’s plug-in
module bays. See “Using Plug-In Modules” on page 84 for information about installing
plug-in modules.
module bays. See “Using Plug-In Modules” on page 84 for information about installing
plug-in modules.
For instructions on replacing the main battery, see “Step 1: Install the battery” on
page 21.
page 21.
To get the most from your batteries
Follow these suggestions to make your battery’s power last as long as possible.
• Plug in the AC adapter, especially when using a drive in the expansion base’s module
bays, or any external connections such as a PC Card or a modem.
• Set the display brightness to the lowest comfortable level (Fn+F1).
• Put the computer in Standby mode whenever you are not using it for a short while:
• Put the computer in Standby mode whenever you are not using it for a short while:
press the blue sleep button for approximately one second, or click Start, Shut Down
(or Turn Off Computer), Standby.
(or Turn Off Computer), Standby.
• Put the computer in Hibernate mode whenever you want to save your current session,
but will not be using the computer for several hours: press Fn+F12.
• Set the automatic timeout settings to emphasize saving power. If your computer has a
multispeed processor and uses Windows 98 or 2000, use the lower speed on battery
power (the default settings conserve battery power)—see “How the computer
manages power automatically” on page 52.
power (the default settings conserve battery power)—see “How the computer
manages power automatically” on page 52.
• If your computer has a wireless on-off button, turn off the wireless function when
you’re not using it. Press the wireless on-off button so the light turns off.
• 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.
significant power even while they’re inactive.