My 2013 60 with 27k miles Supercharging this week from MN to IL, very little HVAC:
Does your 60 have a B pack? 60 A packs used to max out at 105 kW.
Low battery state = 300v charging * 340a = 102kW
25% battery state = 325v charging * 340a = 110kW
50% battery state = 350v charging * 275a = 96.5kW
75% battery state = 350v charging * 100a = 35.0kW
90% battery state = 350v charging * 50a = 17.5kW
Interesting that the 70 holds 90 kW past 50%. We've never seen that before.