The easiest electricity generating direct battery or cell is a chemical that the chemical energy stored in certain materials, for a difference of electrical potential between the two poles of the battery. As a cell is very simple Can a sheet of copper and a sheet of sex on within a potato in your sink, and in this case, between the two sheets of the difference potential can see. The most common type of battery for commercial purpose. the battery, or dry cell is on a pole that element and the other pole carbon for graphite is Article the role of the interface in that game.