Difference between Capacitor and Battery

Difference between Capacitor and Battery

The capacitor is a device that stores potential energy in the form of an electric field. And the battery is a device that stores potential energy in the form of chemical energy and converts it into electrical energy.

Both the devices used for the same purpose to store electrical energy. But both devices have a difference in the functions.

The battery is a constant source of electrical energy that supplies in the form of direct current (DC). It releases electricity through a chemical reaction that generates an electric current. These chemical reactions are known as oxidation-reduction reactions.

You can find all types of capacitors ranging from the small capacitor to a large supercapacitor. It consists of two or more metal plates. These metal places are not connected but electrically separated by a non-conducting substance like mica, ceramic, cellulose, porcelain, Teflon, etc.

In this article, we will define the factors at which the capacitor and battery are different.

Difference between Capacitor and Battery

Definition

The capacitor stores electrical energy as the electric field. And the battery stores electrical energy as the chemical energy.

Charge/discharge Rate

The rate of charge and discharge of the capacitor is faster compared to the battery. Because the capacitor the energy stores on the plats. but in the case of the battery, the chemical energy is converted into electrical energy while charging. And the electrical energy is converted into chemical energy while discharging.

Material

The capacitor composed of a thin metal sheet held close together or separated by an insulator. The battery is composed of metals and chemicals.

Temperature

The charge and discharge temperature range of the capacitor is between -40 to 65 degrees Celsius. And for battery, the charge temperature range is 0 to 45 degrees Celsius, and the discharge temperature range is -20 to 60 degrees Celsius. The battery is more temperature-sensitive than the capacitor.

Cost

The cost of the capacitor is more compared to the cost of a battery. The battery is cheap in case of a large system.

Life

The service life of the capacitor is approximately 10 to 15 years. And for battery, the service life is approximately 5 to 10 years.

Energy stores

Both of these devices used to store electrical energy. But the capacitor cannot store an amount of energy stored by the battery.

Active/passive component

The capacitor considered as a passive component and the battery is considered as an active component.

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2 Comments

  1. It is really apprecating article I hope I will get new article related to Hydro power and electrical machine

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