Hot climates also do a number on batteries. I’ve replaced more batteries since moving to Texas than I ever did in Minnesota. Now I admit there may not be the same parallel between a regular car battery and a EV battery when it comes to heat. I’ve not looked into that.
Yes. That cheap unmanaged lead-acid battery is nothing at all like the one inside a Tesla. For one thing, your engine-start battery is not temperature controlled. An EV battery is both actively cooled and actively heated. So In Minnesota the battery controller would turn on the electric heat and never let the battery get cold. Same in Texas, there is a cooling system. If your lead-acid battery were actively cooled and heated it would last a long time.
The climate has less effect on the battery than you'd think. Cold weather does however kill range, I think because the car has to run an electric heater for both the battery and the passingers. But the range is not reduced because the battery is cold. it never gets cold.
I don't know of anyone who has replaced an EV battery or even a battery in a Prius. I'm sure it happens but the battery in those cars lasts about as long as a modern gasoline engine. I live where it seems every 3rd car is a Tesla or Hybrid. Most Hybrids are either Toyota or they have licensed Toyota's "synergy" system. Yes, I go on a dog walk and see that there are at least 3 to 5 Teslas parked on every block.
I never hear people complaining about the need to replace their V8 gas engine after "only" 20 or 30 years, so why complain about the estimated 20 or 30 year life of a battery.
I was at the Toyota dealer a while ago talking with mechanics. Most of the taxis around here are Toyota Prius. They are running 24x7 using different drivers and then rotated into this Toyota dealer for service. The mechanics are saying they are now seeing Prius with 300,000 miles with only routine maintenance, new tires, filters, and oil, and (get this) original brake pads. They say they "think" the battery life is half-used and might have to be replaced after 500,000 miles.
OK, big deal, spend $10K every 500,000 miles.
But Prius are gas cars that happen to get 50MPG in city driving, they are not EVs.
BTW, I just saw my first Cyber Truck in the wid. It is big and ugly but built stronger then anything I've ever seen outer then armored military vehicles. It borders on "gross over engineering". It is not made with sheet metal but rather steel plate. I think people are right about expecting one million miles of service from these. That is 80 years of normal driving.