You can set the charge amount, it's not just that percentage change. This isn't so hard to imagine. When I go on a long trip in my s85d car from 2015, I set it

You can set the charge amount, it's not just that percentage change. This isn't so hard to imagine. When I go on a long trip in my s85d car from 2015, I set it to charge to 100%. It hasn't hurt my battery life, model s that is 7 years old and 65k miles. I get ~5 miles less than original battery range at full. My day to day is 90%. You are exactly right that it's not an innovation if the battery can't last similar to almost 10 year's ago lithium batteries with heating and cooling of the battery packs. I think this is achievable today, just by doubling the battery pack (which would take some more space, so maybe these folks have something). Tesla's plan for the ever delayed new roadster was basically put two levels of their battery pack (double it) to get more energy to go faster, but all that energy made it go much further - not double range because of the added weight but a lot farther than a single battery pack.