Love to know how you are going to dispose of all of these batteries?
Same goes for solar panels, all going to need to be replaced at the same time, they only have a 20-25 year lifespan !!!
Why would you dispose of a battery? Everything in it is extremely valuable. Would you bin a rolex if it had a couple of scratches?
Do you know how big the demand is for batteries deemed no longer good enough for the road? It's absolutely massive, way, way, way beyond supply.
There are already companies which can recycle like 90% of the batteries, and 99% of the rare elements, the main problem they have at the minute is there is nothing to recycle.
Loads of companies are looking for EV batteries to use in grid storage/ balancing schemes, they're extremely important to companies building large solar schemes. Same with home storage, can be used for that also. An 80% 50kW battery could provide battery storage for 5-10 houses, depending on load, so they can charge up at night on cheap electric and discharge during the evening when it's expensive (which is the biggest problem for the grid).
You're not going to get scrap yards stacking up car batteries 20m high, it's just not going to happen. It's like why they don't stack catalytic convertors, or gold bars, they're just too valuable, so get used elsewhere, in less demanding roles.
Same for solar, how many have solar panels 5%? How many people will have them at peak? 50%? When is that going to be, 20-30 years? So how will they all need replacing at the same time?
A 25 year lifespan is incredible, will your TV, washing machine, tumble dryer, PS5, mobile phone, laptop, last 1/5th of that time? Do any of those pay themselves back after a 3rd of their life and then start paying out dividends? What about your boiler, is that going to last longer than 5-10 years?
Do we have loads of copper storage tanks stacked up somewhere, from when people started to switch to combi's? Nope.