The present invention relates to a low voltage defective secondary battery determination system and a defective secondary battery determination method using same, the system comprising: a database unit in which manufacturing process conditions, activation process conditions, and voltage measurement conditions of a battery and existing data on the voltages of batteries measured after an activation process are stored; a sensing unit for sensing the manufacturing process conditions, the activation process conditions, and the voltage measurement condition of a battery to be measured, and experimental data about the voltage of the battery measured after an activation process; and a calculation unit for calculating target voltage drop amount correction data on the basis of the existing data stored in the database unit and the experimental data sensed by means of the sensing unit.