User Manual

Batteries and Power Management
Using Battery Power
58 Reference GuideStartup Guide
• For long-term storage, the battery must be charged 20–50% to minimize capacity loss
by self-discharge and to avoid deterioration of performance. Storing a fully charged
battery can cause higher self-discharge and reduce its discharge capacity—even after
recharging—as compared to a battery stored when charged 20–50%.
To maximize processor speed
If your computer’s taskbar contains an Intel SpeedStep Technology icon, then your
computer contains a dual-speed processor with Intel SpeedStep Technology. This feature
enables the processor to automatically switch to a lower, power-saving speed when the
computer is running on the battery. For details, see “How the computer manages power
automatically” on page 52.
To set the speed used by the processor when Windows is running, double-click the Intel
SpeedStep Technology icon in the taskbar.