HP OmniBook 5500 Notebook PC - Manual (Page 42)

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If you have two batteries installed, you can specify the order in which they charge.
Only one battery charges at a time.
1. Important
Save your work—you will be rebooting your OmniBook.
2. Press FN+F2 to start the System Configuration utility.
3. From the Power menu, select Battery Charging.
4. Select the battery charging order you want, and then select OK.
5. From the Exit menu, select Save And Reboot.
6. Select OK in the Save And Reboot dialog box.
To change how power is managed
You can change power-management settings that affect power usage and
performance. For ideas about how to save battery power, see
“To save battery
power.”
1. In Program Manager, double-click the OmniBook Tools icon (in the Main group).
2. Click Power Management.
3. Select the power-management option that matches the balance you want
between battery life and response time.
If you choose the Custom option, you can change the individual time-out
settings, such as the automatic turn-off time. The greater the idle time before
turn off, the more battery power you will use.
4. Click OK.
Note