What is a rechargeable (secondary) cell?
A rechargeable cell, also known as a secondary cell, is a type of electric cell that can be used multiple times by restoring its chemical energy through charging.
In these cells, the chemical reactions that produce electrical energy are reversible. When the cell is discharged, it can be connected to an external power source, which reverses the chemical reaction and restores the cell’s original state.
Common examples include:
Rechargeable cells are widely used because they are cost-effective, environmentally friendly, and suitable for repeated use.