While the container is being shaped, an employee (pictured right) mixes together manganese dioxide (pyrolusite), graphite and electrolyte to form a black granulated material. During the next step of the production process, the granulated material is pressed into silvery matte rings on the cell lines. Four of these rings go into each steel container.
Step 3: The separator
The open steel containers are placed on ring-shaped conveyors for transportation on the assembly line. A paper strip is rolled into a small tube and sealed on the bottom, used as a separator in the battery which is inserted into the middle of the pressed silvery matte cathode rings.