This how to make a lemon battery tutorial is perfect for a quick science fair project, a super fun home science experiment or classroom science activity.  I didn’t even realize you could  make a battery out of a lemon!

Science for Kids: Make a Lemon Battery {Science Fair Ideas!} Citrus fruit battery!
Let’s play with science and make a lemon battery!

Kids Activities Blog loves this project for making a fruit battery  because it is a great way to teach science for kids.

Related: Check out our many fun science experiments for kids

This experiment offers great insight into the the complexity of a battery by breaking it down in simple terms. It also provides an awesome hands-on, visual representation of how it all works. By using a few items you already have in your home, constructing a lemon battery is an inexpensive way to see how electricity works!

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Lemon Battery Kids Can Make

The goal of making a lemon battery is turning chemical energy into electrical energy, creating enough electricity to power a small LED light or a watch. You can also use limes, oranges, potatoes or other acidic foods. This experiment can be educational for children, with adult supervision.

Sciencing, Lemon Battery Facts

Simple Lemon Battery Made with Household Materials

When your kiddo comes home with news that it is science fair time at school a quick, easy, and educational option is the lemon battery.  Recently, our two older kids, ages 7 and 9, presented ‘Lemon Power’ to their classmates and they were all awe struck.

Who wouldn’t be fascinated by using a lemon as a battery?

Related: A massive list of science fair ideas for kids of all ages

The process is simple and fun for the entire family.

Kids Science Fair Project: Make a Lemon Battery {Science for Kids}
Make a simple battery out of fresh lemons or fruits with acidic juice.

Supplies You Need to Make a Lemon Battery 

Great science fair project: Make a Lemon Battery {Lemon Power!} We lit up a light with the batteries we made of lemons.
This is what our lemon battery looked like…

How to Do a Lemon Battery Experiment

Step 1

Roll and squeeze the lemons to release the lemon juice and pulp inside.

Step 2

Insert one galvanized zinc nail and one piece of copper or copper coin into each lemon with a small cut.

Step 3

Connect the ends of one wire to a galvanized nail in one lemon and then to a piece of copper in another lemon.  Do this with each of your four lemons until you have them all connected. When you are finished you should have one nail and one piece of copper unattached.

Step 4

Connect the unattached piece of copper (positive) and the unattached nail (negative) to the positive and negative connections of your light. The lemon will act as the battery.

Step 5

Turn on your light and voila you have powered up using lemon power.

This is the lemon batteries we made from citrus fruit

Fruit Battery Science Experiment

Once the light turns on and your littles realize that it is being powered by the lemon battery they created, have your camera ready because the smile on their face will be priceless.

The end result is not only a greater understanding but also a greater appreciation for the lemon whose uses far exceed being used to simply make lemonade.

More Science Activities & Experiments from Kids Activities Blog

The annual science fair is a great way for kids to learn about the world around them.  We hope this idea for how to make a lemon battery helps your child understand lemon power through an easy, hands on demonstration. We have other great science fair ideas though that you might like!

How did your lemon battery turn out?

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  1. Thanks for the idea! Do you know how long it will work for once put together? Our science fair is on Tuesday (and today is Sunday). Thank you!

    1. Hi, Shannon! That is a great question! I wasn’t sure on the answer, so I did a little research. Unfortunately there is no specific timeframe (it depends on many different variables such as the presence of electrolytes in the lemon and the integrity of the electrodes, etc.). I would try to do it as close to the beginning of the science fair as possible, just to be safe. I hope that helps, and Im sorry there isn’t a more definitive answer!

  2. This is a great idea! Here at Queens Hotel we wish you and your readers a splendid summer ahead. Why not join us for a warm relaxing welcome, with great attractions and amusements close by for all the family to enjoy?

  3. At this moment I am ready to do my breakfast, when having my
    breakfast coming again to read other news.

  4. I am not to sure about just the children enjoying this activity, But i think the adults would love to have a go too!!