You said you drive it home, how far was that, did you drive it to the red, the CAC is still a calculated value and unless reset it’s data set is still from a 2.0 battery. I would run it down and see what it takes to charge, if you have a know. kW going in to the car, say 6.6kw 32A and you get 75Kw in the battery you know. If you start at 5Kw and you only get 48kw you have your capacity. Sure it’s going to take a few hours to drive down to 20 miles left, and again a while to watch to when it tapers but it will answer questions without relying on the car calculation from an unknown and possibly changed formula. An 53kw pack is not going to charge at 6kw for 10 hours.