Learn about the wonders of green energy with the Enviro Battery. Light up an LED bulb or sound a buzzer using natural energy sources like mud, lemons, water and other natural minerals. The Enviro Battery kit teaches children that surprising sources of energy can be found in a wide variety of natural sources. The kit includes wires, zinc and copper plates, plastic cups, an LED lamp, and more. Includes a detailed guide for performing a wide range of experiments. Perfect for young scientists with an interest in electronics and green energy sources. Recommended for ages 8 years and up.