This application shows power usage detail of your android phone. It calculates with the value of power_profile.xml that your android phone has. It is the basic data of power consumption. The default value and the value of Nexus S are displayed side by side. In Android, calculation of power consumption is performed based on this data. Some models have the default value instead of a value which were measured, and the information seen by "Settings – About phone – Battery use" is amusing.