I think you're over-estimating how common it will be to need a battery replacement in an EV. Car batteries don't generally "go bad". They instead get "smaller"

I think you're over-estimating how common it will be to need a battery replacement in an EV. Car batteries don't generally "go bad". They instead get "smaller" over time, but not drastically so. It remains to be seen if modern EV batteries will need to be replaced before all the rest of the car.