ELECTRIFIED VEHICLE SUPPORTING PARTIAL BATTERY REPLACEMENT MODE AND METHOD OF CONTROLLING SAME

A method of controlling an electrified vehicle supporting partial replacement of a battery pack including a plurality of unit bodies includes storing cell information about cells of each of the unit bodies when a preconfigured condition is satisfied during driving, determining, when entering a partial battery replacement mode for replacing at least some of the plurality of unit bodies, an average unit body internal resistance for the plurality of unit bodies, based on the stored cell information, and outputting information on the determined average unit body internal resistance via a display device.