We are told not to beat a dead horse but Ben Puig is repeating his class to show how to extract even more energy from a “dead” battery. A Joule is 2.8E-7 smaller than a kilowatt hour. After some electronics background everyone will build this simple classic circuit to pull tens of thousands of Joules to light an LED. Even if you do not know the difference between a transistor and a breadboard, this class is a light, enjoyable introduction to hobby electronics.
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How much energy remains in the box of Dead batteries in the galley?