Is your LEAF the 40 or 60 kWh battery?It will probably be way higher than 80% charging at home.
With the newer generation of e-cars having from 220 to well over 300 miles range and very few drivers ever exceeding those daily, the ultra rapid charger use will be minimal. That's especially true since even when used, it's likely to be only for a quick small top up to get home near the end of a long journey.
Those who know they will be regularly doing very long runs will probably be buying from the 500 mile range e-cars anyway.
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Regarding the range figures, how much power would it take to propel a LEAF along the motorway at 70 mph? Assume a level road, constant speed, no headwind etc. I'm thinking it would be more than 19 kW, which it would need to be in order to achieve the 220 miles range. My road condition scenario is very favourable too.