I have been scouring the internet to find out what the last revision of the Model X battery pack was for 2020 (mid-late 2020 specifically). This is the first I’ve read about a J revision pack. I’m curious if anyone has any information on what build dates got these “J” packs or if anyone knows what the last revision was for model year 2020 model x’s. I believe there were “H” batteries built for model X in 2020, I’ve not seen anything regarding “I” revision batteries, and again this is the first I’ve read about a “J revision pack.
I’m currently considering a 2020 model X and I know there was supposed to be an increase in wire thickness that allowed for 250 kw charging rates on Model X, but I’ve not seen anywhere that this is the case for 2020 model X’s. I believe there were some ”mid to late” 2020 model X’s that would have had this increased thickness wire and thus can charge at 250 kw (over the 225 kw of previous software updated model X’s). Also, sounds like I definitely don‘t want to go back to model year 2019 long range X due to the number of high voltage battery problems listen in this thread.