100 year 4 million mile battery

[Jim Lewis]

https://www.forbes.com/sites/jamesm...-year-4-million-mile-battery/?sh=1334ce6e72f4

"The NMC 532 chemistry Dahn has been testing promises another leap forward in battery technology. However, cars don’t need to last 100 years, and they don’t need to go 4 million miles either. Considering that the average vehicle age in the USA is 12 years doing 14,000 miles per year, the mean lifetime distance driven by an American car is 168,000 miles, and in Europe it’s a lot less. ....

Even though the average person only keeps their vehicle for 12 years and only drives 168,000 miles total, right now, the Ford warranty is only eight years or 100,000 miles while still having at least 70% charge capacity left. And that's with discouraging DC fast charging and charging to 100% SOC.

So, yeah, for economic reasons, no one may build a truck to last more than 200,000 to 300,000 miles because, eventually, better tech comes along, and you want to upgrade to other things besides getting a better battery. But it would be great to have a battery warrantied for 16 years or 200,000 miles and still have 90% charge capacity left so as not to have to take a big range hit in winter (at 70% normal capacity after eight years) or just not need that many more pit stops on long trips to charge up with an old truck. Gasoline mileage changes with the age of an ICE truck but nowhere near as much as an EV might degrade. It would be great to have a truck battery that brings EV long-term age performance more in line with ICE vehicle mileage performance over the years.

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