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Make a Battery from Potato. Introduction: Batteries generate electricity through a chemical reaction between two different electrodes and one electrolyte.

Materials. Large potato; About 4 inches of steel wire (wire from coat hanger, paper clip, etc.) or galvanized nail; About four inches of stiff copper wire

How to Make a Potato Battery: This video will show how to make a potato battery.

A potato can function as an electrochemical cell or battery. It's fun to use a potato to power an LED clock.

Make a note of which way around the positive (+) and a negative (-) points of the battery went. 3. Number the potatoes as one and two. 4. Insert one nail in each potato.