Real vs. Nominal Prime Battery Capacity

Classic misunderstanding!

 

I found a mistake in my calculation in post #54 but cannot edit it anymore, so, to put the records straight:
If the official EPA score for the Prime will be 133 MPGe on EV and 25 miles AER as Toyota expects:
133 MPGe equals to 0.253 kWh/mile or 25.3 kWh per 100 miles (33.7/133=0.253) Sticker may show 25.
25 miles AER gives 6.33 kWh 'payable' (including charging losses) per full charge.
Assuming that EPA measurement is done at 120VAC (L1) and taking into account Toyota statement that they have improved charging efficiency, we can assume 10% losses in this case, so battery usable capacity is about 5.7 kWh or about 65% of total capacity.

 

When I charge at ChargePoint charger, a fully exhausted battery was "full" at 6.553 kWh delivered. Is that normal?

 

It takes about 6.3kWh or so to charge a fully depleted EV mode portion of the battery. If the HV portion is also partially depleted, it will take a bit more.