Difference between primary and secondary cell

battery or cell are referred to as the parallel combination of electrochemical cells. The major key difference between primary ad secondary cells is that primary cells are the ones that can not be charged but secondary cells are the ones that are rechargeable. So here this article gives the main key difference between primary cell ad secondary cells to better understand this topic.

What is the primary cell?

The primary cell has high-density ad get discharged slowly. Since there is no fluid inside these cells that they are also known as dry cells. The internal resistance is high also the chemical reaction is irreversible. It is the initial cost is cheap and also primary cells are easy to use.

What is a secondary cell?

Secondary cells have low energy density and also they are made of molten salts and wet cells. The internal resistance is low and its chemical reaction is reversible. It is initial to cost is high and is a little complicated to use when compared to the primary cell.

Difference between primary and secondary cell:

  • The primary cell has high energy ad slow in discharge and easy to use, while in secondary cells is a smaller energy density.
  • The primary cell has a high internal resistance, the secondary cell has low internal resistance.
  • Primary cells are no fluids in the cells hence it is also cadry cells, while a secondary cell is made up of wet cells ad molten salt.
  • The primary cell has an irreversible chemical reaction, while secondary cells have a reversible chemical reaction.
  • Primary cell design is smaller and lighter, while secondary cell design is more complex and heavier.
  • Primary cell initial cost is cheap, but in secondary cell initial cost is high.