Light up an LED bulb or sound a buzzer using natural energy sources like a potato?? salt water - even mud. The Enviro Battery kit teaches children that surprising sources of energy can be found in a wide variety of natural sources</br>The kit includes wires?? zinc and copper plates?? plastic cups?? an LED lamp?? and more</br>Includes a detailed guide for performing a wide range of experiments</br>Perfect for young scientists with an interest in electronics and green energy sources</br>Recommended for ages 8 years and up</br></br>Product Description</br></br><p>Learn about the wonders of green energy with the 4M Enviro Battery. Light up an LED bulb or sound a buzzer using natural energy sources like a potato?? salt water - even mud. 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