Quick Answer: Fruit Clock is a kit that uses the juice inside a lemon as the electrolyte in an oxidation-reduction reaction, producing enough electricity to power a clock; 2 lemons make 2 “batteries” in series.
Last updated: October 2026
Key Features
Lemon juice acts as the electrolyte
Oxidation-reduction reaction produces the electricity that runs the clock
Needs 2 lemons as 2 “batteries” in series to give a sufficient voltage
Electrodes must be sanded clean between each attempt
About This Product
Two lemons act as separate “batteries” connected in series, and together they generate a voltage high enough to run the clock. Turning fruit into a power source, this Electrolysis kit shows an oxidation-reduction reaction producing useful electricity, and its electrodes need sanding clean before each new attempt.
Frequently Asked Questions
Q1. How many lemons does the Fruit Clock need? Two lemons, which make 2 “batteries” in series to generate a sufficient voltage to power the clock.
Q2. What needs doing between attempts? The electrodes must be sanded clean between each attempt.
