The Natural Philosopher wrote:
[snip]

As for issues of heating and cooling, 5kW is enough for any sane
location and with a 50kwH battery that's only a 10% range reduction,
less with bigger batteries, and almost meaningless with a 1000 mile battery.

You're not comparing the same thing!

5kW *for an hour* is 10% of 50kwH. So even for the range of existing
electric cars, say 250 miles, 5kW for the whole 250 miles at an
average of 50mph is 5 x 5 kwH, i.e. 25kwH, 50% of your battery capacity.

--
Chris Green
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