A method of operating a medical device comprises connecting a secondary battery pack to the medical device. The secondary battery pack includes a processor configured to emulate at least one electrical characteristic of a primary battery pack that has at least one different electrical characteristic than the secondary battery pack. The method further comprises receiving an interrogation input from the medical device with the processor of the secondary battery pack. The method further comprises sending a response output to the interrogation from the processor to the medical device. The response output emulates an expected response output associated with the at least one different electrical characteristic of the primary battery pack. The method further comprises initiating an operational profile associated with the medical device.
