ADOR Digatron ZSU, Z-Fold Stacking Unit, is an automatic electrode stacking and separator folding machine, designed for the production of lithium cells. The operator manually loads the machine with anode and cathode electrodes, stored in specifically designed trays that bring them to the exact pick up position and starts the automatic cycle. Anode and cathode are automatically placed onto an alignment system by a pick and place unit to ensure the correct position. A second pick and place unit then takes the electrodes and places them on the stacking head. The electrodes are held at a precise position while the stacking operation is performed. Once stacking is completed the cell is removed off the stacking head. The separator is cut and wound around the cell, sealing tape is automatically applied and the cell is moved to the exit position.