The VR user's first task was to read the characteristics of the battery cell to be manufactured on a whiteboard in the VR environment. The VR user had then to move through the virtual pilot production line to manufacture the two electrodes proposed by the VR digital twin on the VR whiteboard. At each step, the user had to choose the appropriate input parameters to achieve the objectives. If the user did not choose the right parameter, he/she could not proceed to the next step. Once the two electrodes had been manufactured, he/she had to assemble them to obtain a battery cell for filling and testing. For each electrode manufactured, a QR code was automatically printed for the MR user, who had to validate the composition of the electrodes from interactive 3D holograms of the electrode microstructures overlied in the real environment.