- Measure the load current in all the operating states of the device. That includes the very low currents, such as micro amps when the device is in its sleep mode states as well as currents which can be in the amps range when the device is in its active, operating modes.
- Capture all the power the device consumes in all its operating states. In addition, the characteristics of the battery impact the performance of the device, particularly near the end of the battery's life or discharge cycle.
- Account for the characteristics of the battery, to simulate the battery so that testing of the device is performed under the most realistic conditions.