METHOD AND SYSTEM FOR CHARGING BATTERY USING FUEL CELL

Provided are a method and system for charging a battery using a fuel cell. The method includes: running the fuel cell; setting a voltage input from the fuel cell as a preset first input adapting voltage (1LAV), when the input power from the fuel cell is lower than the output power to the battery; detecting whether an output current to the battery reaches a first low detect current (1LDC) while the battery is being charged based on the first input adapting voltage; and resetting the first input adapting voltage based on a detection result.