Patent ID: 7728548

Claim:
A medical device that is capable of operating to defibrillate a patient according to a first protocol if a preset battery authentication is confirmed, and capable of operating to defibrillate the patient according to a second protocol different from the first protocol if the authentication is not confirmed, comprising: a capacitor for storing an electrical charge that is to be delivered to the patient as part of defibrillating according to either the first protocol or the second protocol regardless of whether the authentication is confirmed; a battery well for receiving a battery pack therein; means for receiving a data set from the battery pack when the battery pack is in the battery well; and a processor capable of recognizing whether the received data set confirms the authentication or not, in which according to the first protocol, power is drawn from the battery pack even if the battery pack is not the only available source of power for the device, but according to the second protocol, power is drawn from the battery pack only if the battery pack is the only available source of power for the device.