The Natural Philosopher wrote:
On 24/05/2021 02:36, Joey wrote:


"The Natural Philosopher" wrote in message
...
On 23/05/2021 20:26, Tim+ wrote:
The Natural Philosopher wrote:
On 23/05/2021 18:43, bert wrote:
In article , The Natural Philosopher
writes
On 21/05/2021 15:44, Andy Burns wrote:
The Natural Philosopher wrote:

Steve Walker wrote:

They are never going to provide charging on cross-channel
ferries.

Why ever not?
I'd say it was the perfect place for it
presumably they'd like some space on-deck for vehicles, rather
than
just a ferry full of generators and diesel tanks?



or a very small nuclear reactor



Well if they can put one in a sub a ferry shouldn't be too difficult.

Of course it isn't. Only public ignorance and superstition stops us



And possibly getting it insured€¦


Again, only public ignorance and superstition stops us

Wrong. The other problem is the stupid cost for what is
at most an hour charging which is no use at all for most.

Don't be silly. You can charge any lithium battery fully in an hour
And last time I did the trip it was longer than an hour

https://batteryuniversity.com/learn/...ric_vehicle_ev

"Energy cells should be charged at a C-rate below 1C. === BEV recommendation
Going above 1C increases stress that reflects
in rapid capacity degradation. Ultrafast charging
is most effective between a SoC of 20€“50%. The onboard BMS
only applies full boosts in this level where
charge acceptance is highest before lowering
the current to a more moderate level.

The power cell is more rugged and can be charged faster
than the energy cell. Power cells are commonly used for
power tools. They deliver high current, have a wide temperature
range but store less energy than the energy cell.
"

And that recommendation in the first paragraph, can be seen
in the charge curves for the Model 3 and the Taycan, which
hammer in the charge, on the left side of the curve, and back
off, on the right side of the curve (top up). (And that's only
during fast charging. Not household charging at some lower rate.)

And as Figure 2 shows, the cars with a battery warranty "stretch"
battery life by disabling fast charging. The firmware studies
the charging pattern, to discover when too much fast charging
has been going on (because the capacity reduction, when
extrapolated, will result in a warranty claim for a new battery).

So while this Israeli company makes P.R. points with its story,
it remains to be seen whether such a development can charge in
5 minutes... forever. Maybe 5 minute charges the first 200 times,
then some lower level for the rest of the vehicle life.

Lithium batteries also have a recommended discharge rate. Which
is different for Power versus Energy batteries. Doing too many
burnouts in your Model 3, might not be good for it either. The Tesla
Power Wall, you're supposed to spend two or three hours discharging
it. It would not be suitable as a fast charger for your car, unless
sufficient of them operated in parallel. Perhaps a Tesla Powerwall
with Power cells in it, would be a better device for car charging.
But, with only half of the total storage capacity.

Home charging still makes the most sense. Even if it doesn't
offer the same quality of service as an ICE.

Paul