Carbon-Zinc Cell:

The carbon-zinc cell is one of the oldest and most hugely used types of dry cells.  The carbon in the battery is in the form of a rod in the middle of the cell that acts as the positive terminal. The case is made from zinc and acts as the negative electrode. The electrolyte for this category of cell is a chemical paste-like mixture that is housed among the carbon electrode and the zinc case. The cell is then sealed to avoid any of the liquid in the paste from evaporating.

The benefits of a carbon-zinc battery are in which it is durable and extremely inexpensive to generate. The cell voltage for these categories of cell is about 1.5 volts.