Panasonic was making the older chemistry batteries and the newer chemistry batteries at the same time for a while. They probably converted the last production line to the new chemistry in the last couple of months, so the batteries that were going into 85KWh battery packs are no longer available. I wonder what is happening with the 70 KWh pack? I have noticed at least some people with 70s on order are complaining because Tesla won't put their cars into production. I wonder if they are quietly replacing the 70 KWh battery with a 73 or something like that? Using the same batteries as the 90, it wouldn't be enough to boost the pack all the way to 75, but it would be over 70.
Another possibility is they are keeping the old battery chemistry in low production for the 70 only, though I think that would be inefficient.
Another possibility is they are keeping the old battery chemistry in low production for the 70 only, though I think that would be inefficient.