System and Method for balancing battery cells and Recording medium using it

The battery cell balancing system, method and recording medium storing this is provided. Battery cell balancing system according to the invention, The drain (drain) current of each other are connected in parallel and a plurality of other electrical FET plurality of battery cells that; Charging means for charging the plurality of battery cells; And said control means, and by controlling the amount of electric current to be charged to each of the plurality of battery cells, and control means for controlling the charge rate is, monitor the state of charge of the plurality of battery cells, and each of the plurality of battery cells, selecting at least one FET of said plurality of FET and to provide a battery cell-balancing system and method for a control means having your charge through at least one FET said selected for each of the plurality of battery cells for do.