I recently purchased a VCX Nano MDI (OBD) Interface that included GDS2 software. I got it to access GM TIS2WEB SPS so I could fix an issue with my Volt. But, the GDS2 was a nice bonus.
Anyway, I connected it to my 2015 Spark EV with 11,000 miles to see what I could see. One of the HPCM2 data readouts is actually labeled "Hybrid/EV Battery Pack Capacity." I looked up that label and it was referenced on gm-volt.com as a hex value representing the Amp-hour capacity of the battery with precision to 1/10th. In my case the hex value was 0209. That translates to 521, or 52.1Ah. The pack voltage on the same screen showed 395.7. Multiplying those two numbers and dividing by 1000 equals 20.61KWh.
I'm not sure if that number is total pack capacity, or usable. But either way, it's above what most people believe the total capacity of the 2015/16 LG battery is.
I took a screen cap, but don't see a way to insert it here without hosting it somewhere.
EDIT: As is stated below, nominal voltage (355V for our cars) must be used to calculate capacity. So, this should be 52.1 x 355 = 18.5KWh
Anyway, I connected it to my 2015 Spark EV with 11,000 miles to see what I could see. One of the HPCM2 data readouts is actually labeled "Hybrid/EV Battery Pack Capacity." I looked up that label and it was referenced on gm-volt.com as a hex value representing the Amp-hour capacity of the battery with precision to 1/10th. In my case the hex value was 0209. That translates to 521, or 52.1Ah. The pack voltage on the same screen showed 395.7. Multiplying those two numbers and dividing by 1000 equals 20.61KWh.
I'm not sure if that number is total pack capacity, or usable. But either way, it's above what most people believe the total capacity of the 2015/16 LG battery is.
I took a screen cap, but don't see a way to insert it here without hosting it somewhere.
EDIT: As is stated below, nominal voltage (355V for our cars) must be used to calculate capacity. So, this should be 52.1 x 355 = 18.5KWh