A moving object capable of protecting a converter and a method therefor, includes a first battery outputting a voltage lower than a predetermined voltage and a second battery outputting a voltage higher than the predetermined voltage; a converter electrically connected to the first battery and the second battery and configured to convert the voltage from the first battery and to provide the converted voltage to the second battery; a protector configured to control the voltage of the first battery, which is provided to the converter, in response to a voltage difference between the first battery and the second battery reaching a protection condition; and a processor electrically connected to the protector and configured to determine, in response to the protection condition being reached, a required first battery output according to a target voltage difference between the first battery and the second battery and a request control of the moving object and to control an output of the first battery.