Normally, manufacturer of EV cars publish the usable battery capacity of their cars. For my Kona EV, the published capacity was 64kWh, the real capacity was actually closer to 67kWh. I did a lot of obd2 data recordings and I was able to confirm this.
For the I5, I notice that at 100% SoC display, the bmsSoC is actually 97% and at close to 0% display, bmsSoC is about 4%. (For the Kona, bmsSoC was 97% as well at 100% but it was 0% bmsSoC at 0% SoC display, like no margin at the low end). So about 93% of the real battery capacity is used. This would mean that the real battery capacity should be around 83kWh (based on the published battery capacity of 77.4kWh). My analysis of the recorded obd2 data shows an actual usable capacity of around 72kWh... Which would align with 93% of 77.4kWh. this is a bit unusual from Hyundai that the published battery capacity is not the usable capacity.
For the I5, I notice that at 100% SoC display, the bmsSoC is actually 97% and at close to 0% display, bmsSoC is about 4%. (For the Kona, bmsSoC was 97% as well at 100% but it was 0% bmsSoC at 0% SoC display, like no margin at the low end). So about 93% of the real battery capacity is used. This would mean that the real battery capacity should be around 83kWh (based on the published battery capacity of 77.4kWh). My analysis of the recorded obd2 data shows an actual usable capacity of around 72kWh... Which would align with 93% of 77.4kWh. this is a bit unusual from Hyundai that the published battery capacity is not the usable capacity.