Patent ID: 8391922

Claim:
A Subscriber Identification Module (SIM) card for a portable wireless terminal, the SIM card comprising: a SIM contact pad group which is exposed to an outer surface of the SIM card, and is electrically connected when the SIM card is placed in the portable terminal so as to identify subscriber information; a battery cell which is embedded in the SIM card, and is electrically connected when the SIM card is placed in the portable terminal so as to be used as an auxiliary power source for the portable wireless terminal; a battery contact pad group which is electrically connected to the battery cell and is exposed to the outer surface of the SIM card; and a mode change element which is disposed to a lateral side of the SIM card and by which either an auxiliary battery function or a SIM function is selected by a user's manipulation, wherein the SIM contact pad group includes six SIM contact pads, and wherein the battery contact pad group includes three battery contact pads that include a battery voltage contact pad for supplying power, a battery detection contact pad for detecting the battery cell, and a battery type recognition contact pad for recognizing a battery type.