POWER SUPPLY DEVICE, VEHICLE HAVING THE SAME, AND METHOD OF CONTROLLING THE SAME

A method of controlling a vehicle includes: determining whether a condition for entry into a refresh mode of a battery in the vehicle is satisfied; when the condition is satisfied, predicting an amount of power generated by a solar generator; determining whether to perform the refresh mode based on the predicted amount of power; when the refresh mode is determined to perform, charging the battery using the power generated by the solar generator; identifying a charge amount of the battery; when the identified charge amount is greater than or equal to a first reference charge amount, terminating charging the battery; when an ignition-on command is received, determining whether the charge amount of the battery is greater than or equal to the first reference charge amount; when the charge amount of the battery is less than the first reference charge amount, charging the battery using power generated by an alternator.