Power apparatus for vehicle

The present invention relates to a vehicle power supply device that supplies power to the ECU inside the vehicle in accordance with the will of the driver. To this end, the present invention is that on the ECU power supply to determine the will of the driver receives the signals of the various switches associated with the electric load / off-controlled and supplied to the electric load when more than a certain amount of time on the counters to time the switch signal input shutdown (shutdown) the path of battery power makes it possible to prevent the discharge of a battery according to a switch failure.