Which type of battery can be recharged?

A secondary battery is designed to be rechargeable, which sets it apart from other types of batteries. These batteries store energy chemically and can undergo multiple charge and discharge cycles, allowing them to be reused many times. Common examples of secondary batteries include lead-acid batteries, nickel-cadmium batteries, and lithium-ion batteries, which are widely used in various applications including vehicles, electronics, and power storage systems.

On the other hand, primary batteries, such as alkaline and carbon batteries, are intended for single-use. Once the chemical reaction that generates the electrical energy is depleted, these batteries cannot be recharged and must be replaced. This fundamental difference in construction and function is why only secondary batteries can be recharged and reused.