To conserve power when operating on battery power, the iBook computer supports two methods of power stepping to slow down the processor clock. One method is an inherent feature of the PowerPC G3 chip, called Dynamic Power Stepping (DPS) and cannot be adjusted by the user. DPS is controlled automatically by the system, stepping up the processor speed for performance-intensive applications and stepping down the processor speed for energy-efficient applications.
Under Mac OS X, users can manually step down the processor by adjusting the Energy Saving Settings, which are located under the Energy Saver panel of System Preferences. Users can select from preconfigured profiles including Automatic, Highest Performance, Longest Battery Life, DVD Playback, and Presentations, or customize their own energy settings. Highest Performance and Longest Battery Life profiles override the DPS feature. Highest Performance maintains the highest processor speed while Longest Battery Life caps the processor speed at 400MHz.
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You can now recondition your old batteries at home and bring them back to 100 percent of their working condition. This guide will enable you to revive All NiCd batteries regardless of brand and battery volt. It will give you the required information on how to re-energize and revive your NiCd batteries through the RVD process, charging method and charging guidelines.