Battery inspection apparatus

The invention provides a battery inspection apparatus capable of inspecting position offset of an electrode plate even for high-capacity stacked battery. The battery inspection apparatus comprises an X-ray tube (a radioactive ray source), a positioning unit, a moving unit enabling the battery to move toward a laminated direction of the electrode plate, an X-ray detector detecting X-ray beams transilluminating the battery and enabling the X-ray beams to work as transmission image output, a camera control part controlling the moving unit and the radioactive ray detector for the battery positioned by the positioning unit and enabling the battery to move along a laminated direction, and an image compound part. In a plurality of moving directions, radioactive rays after transmission on an electrode plate direction are detected to acquire a plurality of transmission images; the same regulated areas are extracted for the plurality of acquired transmission images to acquire transmission image offset and offset amount