A battery pack may include a battery pack case and battery cells accommodated in the battery pack case, where an inner space of the battery pack case may include a first area and a second area, a first battery cell may be provided in the first area, second battery cells may be provided in the second area, and the second battery cells may be arranged around the first battery cell; the first battery cell and the second battery cells each may have a first discharge voltage plateau and a second discharge voltage plateau, and an average discharge voltage in the first discharge voltage plateau may be higher than an average discharge voltage in the second discharge voltage plateau.