RE: Keeping Warm!!
OK, so your advice is pretty much exactly what I have been doing to date, and you are right in that it has not noticeably affected range. Equally, though, the temperatures have been between 7 and 13 c and with pre heat, a little sunshine through the glass and mostly short journeys, that has been fine.
What I have noticed is that the air blowing out of the vents is not what I would call hand warming. As a trial I turned the heat up to full yesterday and at a standstill the readout was saying 4 to 5kw of draw. Well, on 18 kw s of useable battery that's 22% of battery capacity or 11 miles of range (OK, so it was heating up the matrix, but on sub zero c days it would be working pretty hard to keep me and the dogs warm!!).
That sort of range loss on-top of cold battery losses could see me in sub 50 mile range territory. It is early days for me yet, but I am a little worried about keeping that huge windscreen demisted and icicle free, and I would like to able to warm the van when I'm away from the socket.
I have driven a horse and carriage and I know how cold it can be...we have moved on in transport terms and the spectre of EV drivers wearing ski clothing, or basically suffering, in order to preserve range is a backward step. This , however, causes conflicting interests on battery usage, given the limited capacity with all but the Tesla electric vehicle market. For me, the stored electric power seems ,in principle, to be for propulsion, and to that end I want to look elsewhere for the heat source.