The world's first waves of EVs are reaching end of life, and within a few years millions of lithium batteries will “die” all at once. Inside each one is lithium, nickel, and cobalt that's still perfectly good — ore you don't have to mine, don't have to wait a decade for, and don't have to source from a Chinese refinery. The way to get it back is to shred the batteries into a black powder called “black mass,” then extract the metals to make new batteries. This is the story of a business that turns battery waste back into an “urban mine” — still an infant industry waiting for its big wave, but fast becoming a strategic battleground of the clean-energy era.