As far as I am aware it’s DC fast charging timescales that really vary on charging times on Ev’s. I thought that on a standard home install 7kw charger you should get around 25-30 miles of charge per hour depending on the efficiency of the driving.
Absolutely.
There may be AC charging capabilities higher than 7.4kW, like 11 or 22 but none less. Therefore all cars will happily charge at that rate.
DC charging requires hardware capable of carrying the power, so some may stick at relative low speeds like 120kW while others will approach 200. Then there’s the internal architecture where the HV system runs at a higher voltage and 800V systems can charge above 400kW.
The other consideration is charging curve. Many with very high peak charging rates tail off early and still take quite a while to charge, while others may hit the 140 near limit but stick there from 25% to 65 or 70% and then decrease at a slow rate to beyond 80%. Thus most rates are shown between 20 and 80% because charging could drop down to 10kW or lower soon after.
For example, the original MGZS charged at only 50kW max but it held that all the way to 85% full, at which point it dropped to 15 by 90% and 7kW by 95%. The sooner you recognise where your car drops and by how much, the better you can plan when to stop charging whilst on a long journey.
I'm Autistic, if I say something you find offensive, please let me know, I can guarantee it was unintentional.
I'll try to give my honest opinion but am always open to learning.
Mark