A method for determining a low voltage defect of a lithium secondary battery is provided. The method includes measuring a primary voltage of a lithium secondary battery whose formation process has been completed, transporting the lithium secondary battery, measuring temperatures to which the lithium secondary battery has been exposed during the transporting process, measuring a secondary voltage of a lithium secondary battery whose transporting has been completed, revising the secondary voltage to calculate a corrected secondary voltage based on the temperature to which the lithium secondary battery has been exposed, and comparing the primary voltage and the corrected secondary voltage to determine whether the lithium secondary battery is defective.