Power Management - HP Compaq Presario,Presario 800AP Supplementary Manual

You can use your Notebook
while the battery is draining
or charging.
5. Click the Power Schemes tab.
6. From Running on Batteries column:
a. In the Turn off Monitor drop-down list, select Never.
b. In the Turn off Hard Disk drop-down list, select Never.
c. In the System Standby drop-down list, select Never.
7. Let the battery drain until your Notebook reaches
Hibernation and turns off.
8. Plug in the AC adapter. Restart your Notebook.
9. Return to the Power Management Properties dialog box
under Control Panel and re-enter your Power Savings
settings to the desired level.
The battery is now calibrated.