To be honest it not very accurate, our Outlander PHEV has a 13.8kWh battery, 25 -30% is usable in reality you are looking at at draw using the 30% reserve 10.1 – 10.6 kWh, and at 25% 11.4 kWh.
The calculator is basing it calculations on 14kWh ?
Unfortunately I have suffered a brain injury and occasionally I get confused and often say the wrong thing.