6.2kWh total pack capacity
would be 520Ah if a 12V bank
So breaking down
22S @ 80.3V = 3.65Vpc midpoint
total 78Ah, rated 10C ? peak ? (6C continuous?)
3P so each pouch 26Ah, looks like pn GPNMC75161227
here you go
https://a123batteries.com/a123-systems-3-7-volt-26ah-prismatic-pouch-cell-amp26-nmc/
$32 each so USD $2,112 for 66 of them, plus interconnect wiring, hard casing, BMS etc
plus delivery of course (~$150-200?)
Given the quality premium the A123 brand has always commanded,
$340/kWh seems pretty reasonable to me, definitely "EV grade" and not secondhand,
even with the much shorter lifespan compared to LFP, and you do get double the density. . .