That is A battery. The thermal management, safety mechanisms and infrastructure are fundamentally different when you are doing a dozen or two EV's worth or batteries simultaneously. I am not convinced that is practical in a consumer setting, or - to go back to the original topic - as a solution for people who don't have private parking to charge at.
As is noted elsewhere in the thread, it isn't simply a battery problem.
As is noted elsewhere in the thread, it isn't simply a battery problem.