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Originally Posted by Wikipedia
While a single bolt of lightning carries a relatively large amount of energy (approximately 5 billion joules[1] or about the energy stored in 145 litres of petrol), this energy is concentrated in a small location and is passed during an extremely short period of time (microseconds[2]); therefore, extremely high electrical power is involved.
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That wold be like taking the whole fast charging problem, and multiplying by itself.
Edit: The Samsung announcement involves anodes made of silicon instead of carbon, wrapped in graphene sheets because the silicon swells and shrinks through the charge/discharge cycle.
So, something different. It's the usual 2 to 3 years out.