To Maximize Processor Speed - HP Notebook PC Reference Manual

In addition, follow these suggestions to extend the life of your batteries.
• Do not leave batteries unused for long periods. If you have more than one, rotate
them.
• If you normally use AC power, make a practice of using the battery as your power
source at least once a week.
• Unplug the AC adapter when the computer is not in use.
• To preserve the life of a battery, be sure to charge it regularly.
• For long-term storage, the battery must be charged 20–50% to minimize capacity loss
by self-discharge and to avoid deterioration of battery performance.
• To maintain maximum battery capacity and accuracy of the battery gauge, perform
this calibration procedure every few months:
1. Connect the AC adapter.
2. Restart the computer and press F6 when the HP logo appears.
3. Follow the startup instructions. The calibration process could take 4-6 hours or
more per battery, and you can't use the computer during that time. If you interrupt
the process, the battery might be left with a low charge.

To maximize processor speed

If your computer contains a multispeed processor with Intel SpeedStep Technology, the
processor can automatically switch to lower, power-saving speeds or to higher-
performance speeds according to the workload. See "How the computer manages power
automatically" on page 50.
Batteries and Power Management
Using Battery Power
Reference Guide 57