Not exactly....

The ( regular ) FEH has a 2 kWh battery, but you normally only get to use 40% to 60% SOC, so it is really a 0.4 kWh battery.

The PHEV from Hybrid-Plus for example contain a 12 kWh battery, and you get to use 10% to 95% SOC ( or more ) so it is really a 10 kWh battery.

-John