A vehicle may include a generator configured to generate power; a battery configured to store power generated by the generator; a battery sensor configured to detect a voltage, current and state of charge (SOC) value of the battery; and a power management apparatus configured to receive the voltage, the current and the SOC value of the battery from the battery sensor, configured to identify whether the battery is low-charged based on the SOC value of the battery, and configured to identify a cause of the low charge of the battery based on the voltage and the current of the battery.