On Wednesday, 15 March 2017 17:07:10 UTC, whisky-dave wrote:
On Wednesday, 15 March 2017 16:35:30 UTC, harry wrote:
On Wednesday, 15 March 2017 15:20:07 UTC, whisky-dave wrote:
On Tuesday, 14 March 2017 20:28:28 UTC, The Natural Philosopher wrote:
On 14/03/17 19:03, Chris Hogg wrote:
On Tue, 14 Mar 2017 17:32:29 +0000, GB
wrote:

On 14/03/2017 15:35, Chris Hogg wrote:

Anyway, it seems that an electric car with a fully charged 100kWh
battery should be able to do much the same range as a petrol car on a
single tank. Glancing at Tesla, they are claiming about 300 mile range
for their cars with the biggest batteries. That would suit me fine, as 4
hours is my absolute maximum drive.

The point I wanted to make was that in order to charge an electric car
battery in times comparable with filling the tank with petrol, you'd
need an awful lot of amps at an awful lot of volts.


Tesla claims that you can get a 50% charge in 20 minutes at one of their
super-fast chargers. That sounds like around 100kW = 400 amps at 240v,
which seems rather high.

Yes, I agree with those figures. OK if you want to stop at a service
station and pop in for a coffee while you wait, but at busy times
there's often a queue for the normal petrol pumps, and they have a
fairly rapid turnover, so what it would be like with a twenty minute
wait I shudder to think.

Exactly. But you can charge a li-ion battery - if its designed for it -
in about 6 minutes, Gets a bit hot of course.

Which will add to global warming if 1000s are doing it day in day out.
Might be a few cool explosions too.

Most people will slow charge by night at home.

Most people as yet don't have that facility and even them will their CU and cabling be up to it on a large scale. Outside my flat you'll be lucky to find a parking space.

It's only 2.2 Kw.
Plugs into 13a socket.