VEHICLE CHARGING SYSTEM, VEHICLE CHARGING METHOD, POWER SUPPLY SYSTEM, AND POWER SUPPLY METHOD

A vehicle (100) includes a first inlet (612) to be connected to a commercial power source, a second inlet (622) to be connected to a battery of an HEMS (Home Energy Management System) which supplies electric power greater than electric power supplied by the commercial power source, and an ECU (160). The ECU (160) indicates one of the first inlet (612) and the second inlet (622) to a user in accordance with a state of a battery (110) of the vehicle (100).