15 Difference between Capacitor and Battery

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Capacitors and batteries are electronic devices that help to store and to release electrical energy. These devices are measured the storing capacity in an ampere-hour (Ah).

These are the basic functions and similarities between capacitor and battery. But, they have some salient differences.

In this tutorial, we are going to study about what is the difference between the capacitor and battery.

Difference Between Capacitor and Battery

Let’s compare capacitor vs battery with multiple specifications in tubular form.

#ContentCapacitorBattery
01Basic PrincipleCapacitor works based on electrostatic field.Battery works based on an electrochemical (or oxidation-reduction) reaction.
02[Defination] What is a capacitor & battery?An electronic device stores the potential energy and releases it in the form of electric energy is called as Capacitor.
Sometimes, it is called as a Condenser.
The device stores potential energy that convert into electric energy is called as a Battery.
03Storing energyIn a capacitor, potential energy is stored in the form of an electrostatic field.In a battery, potential energy is stored in the form of chemical energy.
04Construction of capacitor & batteryTwo or more metallic plates are required for the construction of the capacitor.Anode (positive) and cathode (negative) terminals are required for the construction of the battery.
05Insulating materialThe dielectric material (insulator) is used in the capacitor that separates metallic plates.The electrolyte solution is used in the battery that separates the anode and cathode terminals.
06What are the active and passive components?The capacitor is a passive component.The battery is an active component. Because it generates electric energy.
07Functions of charged particles (electrons).It can only store charge particles (electrons).
It can generate and store charge particles (electrons).
08Volatge FunctionCapacitor rapidly decreases voltage while discharging.The battery provides a constant voltage (DC source) supply.  
09Types of capacitor & batteryThey are classified into different types -Ceramic, Tantalum, and Electrolytic.They are classified into different types- Alkaline, Lead-acid, Lithium-ion, Nickel-cadmium, Zinc-carbon.
10Requires times It requires less time for charging and discharging time (few seconds). It requires more time for charging and discharging time (few minutes).
11Polarity During charging and discharging, the capacitor has the same polarity.During charging and discharging, the battery has reversed polarity.
12Used of capacitor & batteryThe capacitor is used in electrical and electronic circuits or devices, power factor correction, electronic filter, motor starter, oscillator, snubber, etc.The battery is used in power electronic appliances, medical devices, automatic equipment, IoT based devices, etc.
13Capcitor & battery costIt is cheap. Its cost depends on the size and power rating. It is costly as compared to the capacitor.
14Serive LifeIt gives long service life. It gives short service life.

15. Symbolic Representation of Capacitor and Inductor

In this post, I have covered 15 basic differences of capacitor and battery. If you have any queries regading capacitor vs battery, you can ask a given comment.

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