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Most of the energy loss when charging a battery will be converted into heat which can't be captured by the system and is therefore lost. That heat isn't free and as you say, energy doesn't disappear but it can be converted into a different form (regenerative braking is a great example where the...

A previous GM car I owned which I had serviced by my local GM dealership would always replace the battery in the keyfob every 2nd or 3rd service, and when I picked up the car they would give me another battery to take home as a replacement for the spare car fob too.

I think the algorithm is a very simple, something like .. Range = {Battery % remaining) / ((Battery % x minutes ago ) - (Battery % remaining)) * (Distance travelled in past x minutes) It need not be more complex than that. It cannot make any assumptions about future driving except to...

My understanding is that the displayed KM remaining in the battery is just an estimate and is based only on your very recent driving history, and should not be taken as fact. There are so many more factors which equate to the range of electric compared to say petrol or diesel, and especially...