Abstract: A smart battery simulating system, which is applied to test response of an embedded controller of a portable electronic device to different battery conditions, includes a smart battery simulator and an application program. The smart battery simulator is coupled to the embedded controller of the portable electronic device and a computing device, and is operable so as to receive an input signal representative of battery-specific test characteristics from the computing device, and so as to generate an output signal that corresponds to the input signal and that is to be provided to the embedded controller of the portable electronic device. The application program is installed in and is executed by the computing device so as to configure the computing device to provide the input signal to the smart battery simulator when the computing device executes the application program.