APPARATUS AND METHOD FOR MANAGING POWER FOR VEHICLE

A power-managing apparatus for a vehicle includes a first power supplier configured to supply power, a first voltage system including a first battery configured to step down a voltage output from the first power supplier into a first voltage to supply the first voltage to a first load, and supply a first redundancy power to the first load when the voltage output from the first power supplier is not transmitted; a second voltage system including a second battery configured to step down a voltage output from the first power supplier into a second voltage to supply the second voltage to a second load, and supply a second redundancy power to the second load when the voltage output from the first power supplier is not transmitted; and a power conversion controller configured to convert the first voltage into the second voltage and convert the second voltage into the first voltage.