Note: A good portion of the MnO2 from these batteries is actually carbon. It still worked for my bromine synthesis, but it is something to keep in mind. Hello everyone. In this video, I get manganese dioxide, zinc and carbon from Zinc-Carbon batteries. There is a significant amount of carbon in the MnO2. It is not worth the time to try to separate it out though, unless you need pure MnO2. I used the manganese dioxide to make some bromine. This was filmed in 4K and will be uploaded eventuall