Body of the battery
The body of the battery is made of a hollow steel drum. This drum contains all materials
of the battery and it also serves as cathode of the battery. The positive terminal of the
battery is projected from the top of this drum. Fine grained manganese dioxide (MnO 2)
powder mixed with coal dust is molted to the inner peripheral surface of the empty
cylindrical drum. This molded mixture serves as cathode mixture of the alkaline battery.
The inner surface of the thick layer of cathode mixture is covered with paper separator.
The central space, inside this paper separator is filled by zinc powder with potassium
hydroxide electrolyte. The zinc serves as anode and its powder form increases the
contact surface. The paper separator soaked with potassium hydroxide, holds the
electrolyte in between cathode (MnO2) and anode(Zn