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You are describing charging a battery: https://www.tesla.com/powerwall https://www.tesla.com/powerwall Also, see Gravity battery: https://news.ycombinator.com/
by pofilat 8y ago
You are describing charging a battery: https://www.tesla.com/powerwall https://www.tesla.com/powerwall
Also, see Gravity battery: https://news.ycombinator.com/item?id=17789456 https://news.ycombinator.com/item?id=17789456