RE: Battery day!!20 Sep 2020 10:33
I expect battery day to go down in history as the day the ICE car died.
I expect that Mr Musk will announce a new Tesla battery a larger format using Lithium-ion nickel aluminium chemistry I do not think it will hugely more energy dense what it will be is a hell of a lot cheaper to produce - larger format less cells required, less casing material less weight, cell to pack less complexity. In addition it will have tabless dry coated electrodes thus cutting down complexity and and greatly reducing cost of manufacture by speeding up production lines and reducing the space required for those lines.
I expect Mr Musk will outline how Tesla will build this new battery themselves and how he intends to ramp up production by orders of magnitude so that he can produce millions of EVs every year (circa 5 million a year by 2025).
We know he will also be using Lithium-ion phosphate batteries for lower cost vehicles produced in China these batteries have lower energy density and range suitable for the Chinese market. They are unlikely to be suitable for long range vehicles and higher power vehicles such as the Semi-truck, Cybertruck,new Roadster and performance model S X 3 and Y. Until now Tesla has been constrained by lack of battery supply with the new battery this will no longer apply.