I agree with you, but Cobalt is not a rare earth material. And just to reiterate: lithium is abundant, widely distributed, and cobalt isn't required for batter

I agree with you, but Cobalt is not a rare earth material. And just to reiterate: lithium is abundant, widely distributed, and cobalt isn't required for batteries (LiFePO4 is a common chemistry, uses no cobalt, and has very long cycle life... good especially for grid applications).