[AT] tractor hauling truck

[Stephen Offiler]

Right.  The 48,000 amp calculation was theoretical, and I stated it as
such.  I mentioned a real battery requires a modest recharge current.

SO


On Fri, Nov 29, 2019 at 2:47 PM <szabelski at wildblue.net> wrote:

> 4/0 cable is good for about 300 amps, so for 48,000 amps you’d need
> something along the lines of a transmission line. Also you can’t be putting
> 48,000 amps into any battery I can think of, without an explosion of
> course.
>
>  Batteries take a limited amount of current during charging before damage
> occurs, and as the battery starts to reach full charge, the charging
> current should drop. It’s usually referred to as trickle charging.
>
> Carl
> ----- Original Message -----
> From: Stephen Offiler <soffiler at gmail.com>
> To: Antique Tractor Email Discussion Group <at at lists.antique-tractor.com>
> Sent: Fri, 29 Nov 2019 08:11:27 -0500 (EST)
> Subject: Re: [AT] tractor hauling truck
>
> I'm reading it the same as Howard.  5 seconds to plug it in, then you go do
> something else for a number of hours.
>
> Fun with math:  the older Leaf used a 24KW-hr battery.  (New ones are 40
> and optionally 62).  Voltage is 360VDC.  24,000 W-hr divided by 360V gives
> 66.7 amp-hr.  Multiply by 3600 second in one hour, gives 240,000
> amp-seconds.  Divide by 5 seconds and you get 48,000 amps. That would be
> the current required to fully recharge a depleted battery in 5 seconds, in
> theory.  In practice of course the cells can only soak up recharge current
> at some modest rate.
>
> SO
>
> On Thu, Nov 28, 2019 at 8:28 PM Howard Pletcher <hrpletch at gmail.com>
> wrote:
>
> > That would beat the best Tesla can do.  I think he's saying it takes him
> 5
> > seconds to plug it in so it can charge while he's inside watching TV or
> > whatever.
> >
> > Howard
> >
> > On Thu, Nov 28, 2019 at 8:13 PM Mike M <meulenms at gmx.com> wrote:
> >
> >> Charges in 5 seconds? Am i reading that correctly?
> >>
> >> Mike M
> >>
> >> On 11/28/2019 11:16 AM, James Peck wrote:
> >> > I seem to remember that the Tesla plants were having problems with the
> >> safety authorities because Elon Musk did not like to paint anything
> safety
> >> yellow. Is that fact the tip of an iceberg?
> >> >
> >> > Carl Baker or Kim Lessor one or the other an AT List Member (
> >> hodor at warmrock.net); So, umm - now?  Tesla's truck is $10k less than a
> >> comparable F-150.  Chevrolet's Bolt (car) is about $10k more than a
> >> comparable gas car.  My Nissan Leaf charges in the 5 seconds it takes
> me to
> >> plug it in when I get home.  I don't have to stand there and watch it
> >> charge.  I also refuse to accept less convenience and less utility for
> >> higher cost.  Which is why I'm converting my fleet from gas to electric
> as
> >> quickly as I can afford it (not very quickly).  Honestly, I'm keen to
> >> convert my old Ford tractor to electric.  I'm tired of schlepping gas
> from
> >> the gas station for it.  Or roading it to the gas station to fill it up.
> >> Which I should probably do today - a storm is expected....
> >> >
> >> >
> >> > Stephen wrote: "Anyway, you can keep your electric cars (and now
> >> trucks) until they cost on par with a petrol-fueled equivalent, and
> >> recharge more rapidly than they do now, and charging stations are
> >> everywhere.  I refuse to accept less convenience and less utility for
> >> higher cost."
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