• Set the automatic time-out settings to emphasize saving power. See “To change a time-out setting.” • If you have an I/O PC Card—that is, a PC Card having an external connection, such as a modem or 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’re done using it. • Install a second battery in the plug-in module bay to double the operating time. To get the most from your batteries The following are some further suggestions for the best management of your OmniBook batteries.
• Do not leave batteries unused for long periods of time. If you have more than one, rotate them. • If you normally use ac power, make a practice of at least once a week using the battery as your power source. • Unplug the ac adapter when the computer is not in use. • To preserve the life of a battery, be sure to charge the battery regularly. • For long-term storage, the battery must be charged at 20–50% to minimize capacity loss by self-discharge and to avoid deterioration of battery performance. To change a time-out setting The BIOS Setup utility includes settings for automatic time-outs after specified periods of inactivity.
(This program is described fully in the Reference Guide that came with your OmniBook.) When enabled, these settings save power. There are four time-outs, providing different levels of power conservation. 1. From the Start menu, shut down, then restart the OmniBook. 2. When you see the HP logo, press F2 to enter the BIOS Setup utility. • Pointing devices do not work in the BIOS Setup utility. • Active keys are described along the bottom of the window. • Help information for the highlighted item appears on the right side of the window. 3. Select the Power menu. 4. Select Power Management Mode and use the F5 (or F6) key to move through the list of options and select one other than Disabled:
• Max. Power Savings: The time-out settings are predefined for best power savings (using relatively short time-outs). • Max. Performance: The time-out settings are set for fast performance with some power conservation (using relatively long time-outs). 26