On 27/05/2021 10:43, Joey wrote:


"The Natural Philosopher" wrote in message
...
On 27/05/2021 00:50, Joey wrote:


"The Natural Philosopher" wrote in message
...
On 26/05/2021 15:30, newshound wrote:
On 26/05/2021 10:14, John Rumm wrote:
On 25/05/2021 21:22, newshound wrote:
On 25/05/2021 19:56, Chris Hogg wrote:
On 25 May 2021 17:52:19 +0100 (BST), Theo
wrote:

I came across this article:
https://arstechnica.com/science/2021...der-your-nose/


It's a good roundup of all the different lithium ion
chemistries and how
things have been improving of late, and how that impacts
applications such
as phones and EVs.

Theo
" That means that the capacity of your current batteries is over
1.5
times what they would have held a decade ago."

Am I supposed to be impressed?

Not exactly Moore's Law, is it. Of course it is still worth
having. In the absence of real physics/material breakthroughs
(like, for example, a single layer atomic structure like
graphene, but an insulator) it's getting close to physical
limits, although cost will continue to come down.

Funny you should mention that, but:

https://www.forbes.com/sites/michael...an-lithium-ion




Interesting.

I forget the numbers, but doesn't a motorway petrol station
effectively deliver tens of megawatts of power when its fuel pumps
are all going. So, to achieve equivalent performance in terms of
"refuelling" times recharging stations are going to need fairly
substantial grid connections as we reduce the present battery
charging rate restrictions. Or else be connected to a hydrogen grid
with some big fuel cells. Either way, there are significant
infrastructure questions on top of any basic technology solution.

yes, but they are really not show stoppers.

Also, most of the demand for charge will be during the working day.
Petrol stations have very efficient storage so although the capital
(the pumps) is under utilised, it doesn't screw the economics
because these are cheap.

I am sure a fast motorway charge will not come at domestic rates

But what matters is how it compares with the cost of petrol.

That will be determined by politics

Not with the price of petrol and unlikely with the price of the recharge.

Oh purlease.

70% of the cost of petrol is politically generated duty.

I can buy heating oil that would run my car for 40p a litre. its £1.30
in the pumps as road fuel

the difference is political.
If the government decided to tax vegetarian food instead of petrol it
could be less than 50p a litre



--
"A point of view can be a dangerous luxury when substituted for insight
and understanding".

Marshall McLuhan