On 19/10/2017 23:36, T i m wrote:
On Thu, 19 Oct 2017 09:45:28 +0100, Andy Bennet
wrote:

On 19/10/2017 09:03, T i m wrote:
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


Normally the 12V battery is recharged from the 400V traction battery via
a DC/DC convertor - typically 1kW , so heating/lighting etc DOES use the
traction power.

In those cases, yes.

However 100W for lights (less if LED) will hardly make a
dent in a 40/50/60kWh traction battery capacity.

But again, might in a 10kWh battery? (had it not used an additional
battery). ;-)

Many EVs use a reversible heatpump for the heating/aircon and give a COP
of nearly 300% so those loads are much lower than on a pure resistive
heating type.

And no heating at all uses even less energy. ;-)

Cheers, T i m


My preference is to be toasty in winter and cool in summer!