I did the calculation the same way.I did some calculation of my MY RWD battery capacity based on the Energy app data. At 77% battery, it showed a projected range of 239 miles based on the average of 223 Wh/mi.
At 100% battery, the range would be 310 miles.
223 * 310 = 69.216 kWh.
Any thoughts?
at 51% soc, projected 137miles with average 262wh/mile.
137/0.51*262=70.38kwh
it looks like the usable battery size is around 70KWH.