I don’t have an EV but my understanding is that when you hit 80% charge it slows down to protect the battery. It will charge to 100% if you want but 80-100 will be at a slower rate.
I think the 80% charge is another thing they recommend to protect the battery. I think they say you should only charge to 100% if you’re going on a long journey where you’re going to use the battery in one go.
I have often thought that you need to do some maths when looking at the max range of the car because like you say, you’re not getting the max range charging to 80%.
I’ve never really noticed anyone talking about this when I’ve read about EV’s so I’m not sure if we’re missing something.
I assume you’ll also need to factor in how much charge you have left before you charge again so if you charge at 15% that’s 15% of your range you haven’t used.
222 – 44 (20%) = 178 miles. Then run that down to around 33 miles (15%) and you have a usable range of around 145 miles before you charge up again.
Hopefully someone can add more to this as my EV knowledge isn’t the best and I could be talking absolute rubbish here!