A battery pack employing a charge control device of the present invention includes a charge detection circuit for checking whether a secondary cell is in a charged state or not based on at least a charge voltage or a charge current of the secondary cell, a control circuit for controlling feeding of electric power to the secondary cell according to an output of the charge detection circuit, and a setting circuit for setting a level of the charge voltage or the charge current at which the charge detection circuit recognizes the charged state according to control information fed in directly from outside.