A vehicle includes a system main relay, a first voltage converter, a second voltage converter, a first diode disposed in a third power line and configured to prevent a reverse flow of a current from the first auxiliary machine to the auxiliary machine battery, and a second diode disposed in a second power line and configured to prevent a reverse flow of a current from the first auxiliary machine to the second voltage converter. Therefore, according to the vehicle, even when the auxiliary machine battery is short-circuited, the first diode can prevent a reverse flow of a current and the second voltage converter can continuously supply electric power to the first auxiliary machine.