How to Make Your Own Lime Battery

Citrus fruits can be a source of electrical power.
••• Zedcor Wholly Owned/ Images

Creating a battery from citrus fruit is a popular experiment in schools and a fascinating project to attempt at home. Low-power items such as LCD clocks or LEDs can be powered for a week from nothing more than a piece of fruit. Batteries consist of two electrodes inserted into an electrolyte solution, and the acidic juice of a lime is a natural electrolyte solution, making it a good source of bio-power.

    Squeeze the lime to break up the juice-filled cells within the flesh. Do as much damage to the internal structure as possible but take care not to rupture the skin.

    Strip an inch of insulation from one end of the copper wire, then straighten out the paperclip. If either is dirty, corroded, or has a rough edge, clean the metal until it is smooth and shines.

    Insert the copper wire into one side of the lime and the paperclip into the other side of the lime. Do not allow the two metals to touch each other. The battery is now ready for use. When the two metal inserts are connected to each other, a low voltage will flow between them.

    Things You'll Need

    • Lime
    • Copper wire
    • Paper clip
    • Low-voltage wire
    • Wire strippers
    • Emery cloth


    • Connect a multimeter between the metal inserts to measure the voltage.

      To avoid a painful squirt of lime juice in your eyes, don't lean over the fruit when pushing probes into it.


    • Do not eat the lime after it has been used as a battery. The acidic juice dissolves metal from the probes and may contaminate the fruit.

Related Articles

How to Make a Potato Lamp
How Do Fruit Batteries Power an LED Light?
How Do Batteries Work? Parts, Types & Terminology (w/...
What Are Some Possible Materials You Could Use to Make...
How to Make Electricity Using an Orange
Fruit Battery Science Projects: Making Light With Fruit
How to Make Electricity for a Science Fair Project...
How to Make an Electrical Circuit With a Switch
How to Build You Own Battery Pack AA 9 Volt
How to Make a Potato Lightbulb for a Science Project
How to Make a Battery With Coke & Vinegar
How to Make Your Own Battery
How to Produce Electricity From an Apple
How to Make a Potato-Powered Light Bulb
How Does a Potato Clock Work?
How to Light a Flashlight Bulb Using Potatoes
How Can You Make a Potato Flashlight Project?
Potato Light Bulb Experiment for Kids
Will Batteries Discharge if You Throw Them in a Bag...
Lemon Battery Facts