2019 Bolt built June 10th. 66kWh battery?
Seems like you may have the larger pack- but you really do need a more accurate estimate of % battery capacity remaining. The MyChevrolet app can give that to you, but I have had inconsistent results trying to use the app with the KeyPass feature, where the battery percent is displayed more exactly.This is the scenario that got me wondering. I drove 185.8 miles (starting at 100%) using 56.2 kWh. The display said I had 34 miles left (minimum 27) with the trip average being 3.3 mi/kWh. The battery level was at 15% - which could in theory be as low as 11% because of how it's displayed. I calculated two different ways - one assuming I would get 3.3 mi/kWh for the remaining 27-34 miles and one where I calculated 56.2 kWh being 85-89% of the battery. Both calculations gave me answers ranging from 63 to 66 kWh pack.
I use TorquePro to get my exact state of charge- and that gives two different values, one for the display and one for "Raw"! The raw value is a little higher than the displayed value for low states of charge- which give a little greater estimate of capacity, but still within 1 kWh the times that I have noticed it.
Another alternative is to notice exactly when the green bars of the DIC battery indicator blink to the next lower level, and what "kWh Used" shows. I have the home screen on the display customized to show "kWh Used", so it's easy, as long as I remember to look! Using TorquePro and looking at the screen shows that the green bar blinks to the next lowest level at exactly the upper end of the 5% bin. For example it blinks from four to three bars right at 15%.
See also below. It seems that the calculations will be least biased when performed at between 50 and 75% state of charge.