The video shows a person using a lemon to create a battery. The person is seen using a lemon, a piece of wire, and a small metal clamp to create the battery. The lemon is cut in half and the metal clamp is attached to each half of the lemon. The person then connects the two halves of the lemon with a piece of wire, creating a circuit. The person then uses a small metal object to touch the wire, completing the circuit and creating a small amount of electricity.