Abstract: A vehicle carries a battery package as its power source. Each of plural battery modules in the battery package has a memory device for memorizing identification information that proves authenticity of each of the battery modules. A battery control unit in the vehicle has an authentication unit. The authentication unit determines whether or not each of the battery modules is compliant to specification. When the battery module is determined as non-compliant, a control unit drives the vehicle by using a power source other than the non-compliant battery. As the power source other than the non-compliant battery, an internal combustion engine, a supplemental battery, or a compliant battery can be used, thereby preventing damage of the vehicle due to use of the non-compliant battery without deteriorating user convenience of a user of the vehicle.