Apparatus and method for managing battery

The battery management apparatus and method are disclosed. A battery management apparatus according to an embodiment is part confirmation state to verify the status of each of the plurality of battery member which is balanced; And converting each of the electric power of the plurality of battery unit on the basis of the compensation value is set such that the output power, the output of the plurality of power conversion portion in proportion to each of the SOC of the plurality of battery portion each state and the plurality of battery unit, a plurality of power conversion part to output power may include a control unit for controlling.