Here I recommend one from MiniInTheBox Company, a professional company focus on this kind of product.
Brief Introduction of Green Science Enviro Battery Kit
Key FeaturesSpecification :Uses natural materials like mud, lemons and water to power a light bulb, a watch and activate a music chip.
- An amazing, environmentally friendly science kit that includes detailed instructions so you can create many unusual batteries with fruit juices, vegetables, coins, utensils and more.
- Suitable Age: For ages over 10.
- Packing List
- :4 x Zinc plate;4 x Copper board;4 x Yellow connection cable;2 x Plastic glass;1 x Paper cup;2 x Bottle cap;1 x LED light tower;;1 x Sound chip;
- 1 x LCD time display panel;1 x Sticker paper;1 x Chinese/English manual;1 x Packing box Specifications
- Material: ABS
- Color: Multi-Colored
- Dimensions (cm): 21.5 x 16.8 x 5.5
- Weight (kg): 0.12
... [Full description on MiniInTheBox]
Supplied by MiniInTheBox, Click Here to find the latest price.
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