After furtively searching for it, all across the EV news sites and all the breakdowns so far, despite the very cells obviously being physically separable and in the hands of people analysing the battery pack (Mmmmmph! Hmmm! THIS picture), nobody has seemingly bothered to measure the cell mass itself. And, no, the battery pack specific energy density alone isn't good enough and volumetric battery pack energy density means even less. Reason I am asking this is because the battery pack mass is variable and does not actually give an indication of the underlying technology. it's really quite important if one wants to compare to what LG are doing, and if Elon was stretching it when he says "so and so improvement" The cells are known to have circa 18.23 Wh - that's 80.5 kWh divided by 4416 cells. Depending on whether this cell is 60 to 75 grams determines specific energies that are surprisingly variable, from 243 Wh/kg to 304 Wh/kg It's really irritating. Is there some weird NDA thing going on? Can someone cough up for once?