Potato Battery Clock Kit – Fruit Electricity Experiment STEM Science Project

Turn everyday fruits and vegetables into a working battery with this classic potato clock science experiment. The Sci-Supply Potato or Fruit Clock demonstrates how chemical energy can be converted into electrical energy using a simple electrochemical cell.

Insert the electrodes into two potatoes, lemons, oranges, grapefruits, or other acidic fruits and watch as the natural chemical reaction generates enough electricity to power the digital LCD clock. This hands-on experiment is an engaging way to introduce students to the principles of voltage, current, electrodes, and electrochemical reactions.

The integrated design keeps the electrodes attached to the clock, reducing lost parts and making setup quick and easy for classrooms, science fairs, or home experiments. Students can also experiment with different fruits, vegetables, or liquids to compare how different electrolytes affect power output.

Perfect for STEM lessons, science demonstrations, and curiosity-driven learning.

Key Features

• Classic STEM experiment – Demonstrates electrochemical cells and basic battery principles
• Runs on fruits or vegetables – Works with potatoes, lemons, oranges, grapefruits, and more
• Hands-on electricity lesson – Visual demonstration of chemical energy converting to electrical energy
• Compact classroom design – Integrated electrodes reduce lost parts and simplify setup
• Great for experiments – Compare different fruits to explore voltage differences
• Ideal for classrooms, science fairs, homeschool labs, and STEM activities

Educational Concepts

• Electrochemical cells

• Chemical energy → electrical energy conversion

• Electrodes and electrolytes

• Voltage generation

• Basic battery principles

Typical Experiments

Students can investigate:

• Which fruit produces the most voltage
• How connecting fruits in series increases power
• How different electrolytes affect electrical output
• Why two fruits are needed to power the clock

Specifications

Dimensions: 9" × 4" × 3"
Weight: 9 oz

Suggested Age Range

Recommended for ages 8+ with supervision