How To Make A Saltwater Battery | Science Project

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This tutorial will show how to make a saltwater battery model at home for your school science project.

Electricity is a form of energy that flows due to the existence of charged particles. An ion is a molecule with the net electric charge due to the gain or loss of one or more electrons. Whenever table salt gets dissolved in the water, water molecules separate sodium and chlorine ion. Hence, ions flow freely in the water, carrying electricity and making the water conductive. This science project will demonstrate these properties with the saltwater battery model at home.


In order to start with this project, let us first gather all the required materials


  • Empty glass or jar
  • Alligator clip
  • Iron and zinc rods
  • Voltmeter
  • Salt

Steps To Make A Saltwater Battery

Step 1: First, take an empty jar, pour 2 cups of water and 1tbs of salt. Mix them until dissolved.

until dissolved

Step 2: Now, we clamp Copper and zinc rods to the jar with the help of alligator clips.

aligator clips

Step 3: Then, connect the saltwater battery model with the voltmeter.

the meter

Step 4: Now, the voltmeter will indicate the voltage. This shows that saltwater gets ionized and current starts flowing between the rods.

the voltage

Now, the saltwater battery science model is showcasing the flow of current.

Salt Water Battery Making For School Science Exhibition Project



The saltwater battery science model helps students learn the concept of electricity and conductivity. Also, it can be easily made at home with available material. It is recommended to use pure iron and zinc rods for better flow of current.


Things To Remember

  • Working slowly and carefully during cutover.
  • It is advisable to work on a self-healing mat or a piece of scrap cardboard to protect your work surface.
  • It would help if you learned all about the materials and techniques before experimenting.
  • Work carefully during wire attachment.



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