METHOD AND SYSTEM FOR CONTROLLING BATTERY IN VEHICLE

A method for controlling a swappable battery detachably mounted in a vehicle which includes a main battery fixed therein, includes determining a use mode among a plurality of modes which are different in a charge amount of charging the main battery by the swappable battery based on destination information of a navigation system, and controlling the swappable battery to charge the main battery based on the determined use mode to charge the main battery.