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DIY: 5 Simple steps to make a Battery

battery Potato



Can Potato be used to generate electricity? Yes it can

Like most vegetables, potatoes contain water solubles. While growing, potatoes take up phosphate ions from the soil. The ions dissolve in water inside the potato to become phosphoric acid, an excellent electrolyte.

A galvanic cell converts chemical energy into electrical energy. It has an electrolyte and the electrodes of two different metals. The electrodes are connected through an external circuit where current flows through the circuit. Potatoes acts as an electrolyte the ions can pass through the potato. The potato conducts electricity but not enough to run high voltage appliances.

What you need

  • 2 potatoes
  • 2 short lengths of copper wire
  • 2 galvanized nails
  • 3 alligator clip connected to each other with wire
  • 1 low-voltage LED bulb

What you do

  1. Insert a galvanized nail into each potato.
  2. Insert a short piece of copper wire into each potato as far as possible from a nail.
  3. Use an alligator clip to connect the copper wire of one potato to the positive (+) terminal of the bulb.
  4. Use another alligator clip to connect the nail in the other potato to the negative (-) terminal in the bulb.
  5. Use the third alligator clip to connect the nails of potatoes through copper wire.
                                Now your bulb will glow. Bulb


      The LED bulb is running by the electricity generated with the help of potatoes.


      In the potato battery, the electrons from the galvanized nail transfers into the copper wires. The potato conducts electricity yet keeps the zinc ions and copper ions separate, so that the electrons in the copper wire are forced to move in order to generate current. You can make a stronger battery by connecting several potatoes.


       Make learning fun with our interactive & animated DVD


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