Compaq Armada V300 Series Reference Manual page 72

Select StartÆSettingsÆControl PanelÆPower. Then:
On the Battery Conservation Settings tab, select the High
battery conservation level or select the Custom battery
conservation level, then enter even lower settings.
If you are using a PC Card modem, click the PC-Card
Modems tab, then select the Turn Off PC-Card Modems
When Not in Use check box.
If a CD-ROM or DVD-ROM is in the system, clear the CD-
ROM Auto Insert Notification check box.
Select StartÆSettingsÆControl PanelÆPower
ManagementÆPower Schemes tab, then create a power
scheme that conserves battery power.
Select StartÆSettingsÆControl PanelÆPower
ManagementÆBattery Conservation Settings. Then select a
low screen brightness.
Select the Start buttonÆSettingsÆControl PanelÆCompaq
PowerÆBattery Conservation Settings tab. Then:
Select the High battery conservation level
or
Select the Custom battery conservation level, then enter
even lower settings.