In order to test battery plate packs, the battery plate packs are transported between conveyor belts while compressed to a specified thickness, and the force required for the compression is detected by measuring cells while the battery plate packs are being transported, which measuring cells are associated with a pressing plate associated with one of the conveyor belts. A count is maintained of a number of program pulses which are applied to an individual storage element in a slow programming mode, and an associated bit line voltage is adjusted based on the count. The step of interleaving includes retaining odd numbered frames recorded by the first camera and deleting the even numbered frames, retaining even numbered frames recorded by the second camera and deleting the odd numbered frames, and creating an image sequence by alternating the retained images from the first and second camera. The punch is also provided with a pair of piercing portions for piercing through the workpiece after the member has centered the punch assembly with the pilot hole and a pair of cutting portions for shearing the workpiece after the piercing portions have pierced the workpiece. Coils of different phase are arranged perpendicular to the direction of movement inside different running tracks.