POWER BANK HAVING FUNCTION FOR PROVIDING RECHARGEABLE RANGE OF BATTERY PACK, BATTERY PACK CHARGING SYSTEM COMPRISING SAME, AND METHOD THEREFOR

The present invention relates to a power bank having a function of providing a chargeable range of a battery pack, a battery pack charging system including the same, and a method therefor, and more particularly, to a battery pack charging system that provides information on how far the battery pack can be charged with charging power of the power bank through data communication between the power bank and the battery pack charged by receiving charging power from the power bank.