Dry cell (Dry Cell) cells are used in flashlights. Or in other benefits such as the radio, calculator, etc. The box of cells made of zinc, which acts as the anode
(negative electrode) of carbon or graphite in the middle acts as a cathode (positive electrode) between the electrodes. both containing a moist mixture of NH4Cl, MnO2, ZnCl2 carbon upper cell is sealed with a material that can retain moisture within the cell constant.