I don't think this is true, admittedly with me not knowing that nuch about ev car batteries. But I believe an EV car battery weighs about 1/2 ton for 200-300 mi

I don't think this is true, admittedly with me not knowing that nuch about ev car batteries. But I believe an EV car battery weighs about 1/2 ton for 200-300 mile range or whatever it is today. Say you make cells that a less than average person could pick them up, say 1kg, The number required to change, 500, would makes it clear it's not a trivial problem at all.