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What I define the operating range is the range between charging.
So with a petrol car, if you are uncomfortable going below 1/4 tank, the 'operating range' would be 75% of a full tank?
In your example assuming you charge to 90%, use to 30%, that would be 60% of the usable 67.4kWh. At 330Wh/km, that is 122km. So, if you charge to 90%, and only feel safe going to 30% of your battery, with a 330Wh/km usage, you would need to recharge every 122km. If you are reliant on public charging that is probably reasonable, although I would say the 330Wh/km is extreme and not really what most are getting (even on HK island).
My observation after using v7 is that the "typical range" is now very (have to bold this) accurate. My 90% "typical range" used to be around 360-364km however I always have to discount this number. Now I found that 90% typical range is 340km, initially I thought "what the ..." is that battery degradation after just 22,500k? After a few tests by observing the actual mileage driven and the corresponding drop in typical range I found this display very very accurate. E.g. if I start from 340k after driving 90k the range display will drop to 340-90=250 + (1 to 3k). And it's always a plus!
I think there is some algorithm change behind the scene making this forecast of range very accurate. Perhaps there is Al - deep learning going on such that the car provides forecast based on places that I go using historical consumption figures.
I have not yet driven below 50% yet so I can't be sure how accurate it could be at the low end which we are most concern about.
However I'm pretty sure the more we drive it the more intelligent it gets!