On Thu, 19 Oct 2017 08:21:49 +0100, "Brian Gaff"
wrote:

What happens if he needs the heater and the wipers etc as well though?

On my EV there is no heater and the wipers and lights etc run from an
independent auxiliary battery so wouldn't affect the range as such,
especially in the dry and daytime. ;-)

Cheers, T i m