Quote:
Originally Posted by Luckypants
The percentage state of charge in an EV does not include these buffers and 100% charge for instance is 100% of usable battery. An example I can quote is the new Skoda Enyaq will have an 80Kw battery but will have 77Kw usable battery.
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The limits are still imposed by battery manufacturers when battery fitted to a car or other vehicle, the battery chemistry is still the same whether a battery is in a phone or a car. The 80/20 rule is imposed by the cars charging control computer and are not visible to the owner, when it says 100% on the screen in the car it is not 100%, and the car will stop moving at 20%, not just show a warning light - Tesla remotely unlocked the minimum charge limit on their cars during the last hurricane in USA to allow drivers to go further. When Top Gear tested a Tesla the car stopped at roadside and Jeremy Clarkson called dealer to tell them to come with a tow truck - a bloke turned up with a laptop and 'unlocked' last 20% of battery so the car could limp to a charge station.
Oh and another thing, not only can you not tow with an electric car, you cannot tow an electric car either, there is no neutral position in transmission and you can damage motors , electronics and battery if you try to tow it like a normal vehicle. So you will need a flatbed trailer type tow truck ££££££££'s
Li-Ion batteries get stored at about 40% charge after manufacture for longest possible shelf life, there is a damned good reason for this as a charge level above or below that reduces battery life.