He makes mistakes on a regular basis and I believe many people 'corrected' him in the comments. There was a new larger LFP battery fitted for Q4 2021 / 2022 (60 kWh up from 55 kWh) which is what he refers to as a new battery, but the old one was LFP too - both made by CATL in China.I don't know ... you are probably right ... but this video late December 2021 fitted in with my understanding ... this is the new battery I was wanting ... I stand corrected on the heat pump. My point really was that Tesla do add things as well as take away. It's a nice video on the RWD if anyone hasn't seen it.