<div dir="ltr">Right. The 48,000 amp calculation was theoretical, and I stated it as such. I mentioned a real battery requires a modest recharge current.<div><br></div><div>SO</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Nov 29, 2019 at 2:47 PM <<a href="mailto:szabelski@wildblue.net">szabelski@wildblue.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">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. <br>
<br>
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. <br>
<br>
Carl<br>
----- Original Message -----<br>
From: Stephen Offiler <<a href="mailto:soffiler@gmail.com" target="_blank">soffiler@gmail.com</a>><br>
To: Antique Tractor Email Discussion Group <<a href="mailto:at@lists.antique-tractor.com" target="_blank">at@lists.antique-tractor.com</a>><br>
Sent: Fri, 29 Nov 2019 08:11:27 -0500 (EST)<br>
Subject: Re: [AT] tractor hauling truck<br>
<br>
I'm reading it the same as Howard. 5 seconds to plug it in, then you go do<br>
something else for a number of hours.<br>
<br>
Fun with math: the older Leaf used a 24KW-hr battery. (New ones are 40<br>
and optionally 62). Voltage is 360VDC. 24,000 W-hr divided by 360V gives<br>
66.7 amp-hr. Multiply by 3600 second in one hour, gives 240,000<br>
amp-seconds. Divide by 5 seconds and you get 48,000 amps. That would be<br>
the current required to fully recharge a depleted battery in 5 seconds, in<br>
theory. In practice of course the cells can only soak up recharge current<br>
at some modest rate.<br>
<br>
SO<br>
<br>
On Thu, Nov 28, 2019 at 8:28 PM Howard Pletcher <<a href="mailto:hrpletch@gmail.com" target="_blank">hrpletch@gmail.com</a>> wrote:<br>
<br>
> That would beat the best Tesla can do. I think he's saying it takes him 5<br>
> seconds to plug it in so it can charge while he's inside watching TV or<br>
> whatever.<br>
><br>
> Howard<br>
><br>
> On Thu, Nov 28, 2019 at 8:13 PM Mike M <<a href="mailto:meulenms@gmx.com" target="_blank">meulenms@gmx.com</a>> wrote:<br>
><br>
>> Charges in 5 seconds? Am i reading that correctly?<br>
>><br>
>> Mike M<br>
>><br>
>> On 11/28/2019 11:16 AM, James Peck wrote:<br>
>> > I seem to remember that the Tesla plants were having problems with the<br>
>> safety authorities because Elon Musk did not like to paint anything safety<br>
>> yellow. Is that fact the tip of an iceberg?<br>
>> ><br>
>> > Carl Baker or Kim Lessor one or the other an AT List Member (<br>
>> <a href="mailto:hodor@warmrock.net" target="_blank">hodor@warmrock.net</a>); So, umm - now? Tesla's truck is $10k less than a<br>
>> comparable F-150. Chevrolet's Bolt (car) is about $10k more than a<br>
>> comparable gas car. My Nissan Leaf charges in the 5 seconds it takes me to<br>
>> plug it in when I get home. I don't have to stand there and watch it<br>
>> charge. I also refuse to accept less convenience and less utility for<br>
>> higher cost. Which is why I'm converting my fleet from gas to electric as<br>
>> quickly as I can afford it (not very quickly). Honestly, I'm keen to<br>
>> convert my old Ford tractor to electric. I'm tired of schlepping gas from<br>
>> the gas station for it. Or roading it to the gas station to fill it up.<br>
>> Which I should probably do today - a storm is expected....<br>
>> ><br>
>> ><br>
>> > Stephen wrote: "Anyway, you can keep your electric cars (and now<br>
>> trucks) until they cost on par with a petrol-fueled equivalent, and<br>
>> recharge more rapidly than they do now, and charging stations are<br>
>> everywhere. I refuse to accept less convenience and less utility for<br>
>> higher cost."<br>
>> > <a href="http://antique-tractor.com/listinfo.cgi/at-antique-tractor.com" rel="noreferrer" target="_blank">antique-tractor.com/listinfo.cgi/at-antique-tractor.com</a><br>
>> > _______________________________________________<br>
>> > AT mailing list<br>
>> > <a href="mailto:AT@lists.antique-tractor.com" target="_blank">AT@lists.antique-tractor.com</a><br>
>> > <a href="http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com" rel="noreferrer" target="_blank">http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com</a><br>
>><br>
>> _______________________________________________<br>
>> AT mailing list<br>
>> <a href="mailto:AT@lists.antique-tractor.com" target="_blank">AT@lists.antique-tractor.com</a><br>
>> <a href="http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com" rel="noreferrer" target="_blank">http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com</a><br>
>><br>
> _______________________________________________<br>
> AT mailing list<br>
> <a href="mailto:AT@lists.antique-tractor.com" target="_blank">AT@lists.antique-tractor.com</a><br>
> <a href="http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com" rel="noreferrer" target="_blank">http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com</a><br>
><br>
<br>
_______________________________________________<br>
AT mailing list<br>
<a href="mailto:AT@lists.antique-tractor.com" target="_blank">AT@lists.antique-tractor.com</a><br>
<a href="http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com" rel="noreferrer" target="_blank">http://lists.antique-tractor.com/listinfo.cgi/at-antique-tractor.com</a><br>
</blockquote></div>