Thames & Kosmos Eco-Battery Vehicles - $50 - (Arlington, TX)
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Posted 1 month ago
Metal-air electrochemical cell type of battery that is widely used in small scale devices. -Ideal for demonstrating battery technology. -Does not use any harmful chemicals. -Uses only magnesium plates, salt water, and the oxygen in the air to generate electricity.
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From ebay.com - 1 month ago