From: Bill Dube billd...@killacycle.com
The internal resistance of a battery does not change it's Ahr
capacity. Not even a tiny amount.
No, but it *does* determine how much of the battery capacity gets turned into
waste heat, no?
Assuming voltage stays fairly constant, the power
On Wed, May 7, 2014 at 11:06 PM, Jan Steinman via EV ev@lists.evdl.org wrote:
From: Bill Dube billd...@killacycle.com
The internal resistance of a battery does not change it's Ahr
capacity. Not even a tiny amount.
No, but it *does* determine how much of the battery capacity gets turned into
Sorry, please ignore this message.
David Roden - Akron, Ohio, USA
EVDL Administrator
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Ben Apollonio wrote:
With all due respect to Lee and his expertise in so many areas, I
believe this is incorrect. Lithium Ion has a nearly unity coulometric
charge/discharge efficiency. Although high discharge rates depress the voltage
more,
and therefore cause your battery to reach empty
Man, this Peukert stuff is still confusing people! :-)
Bill Dube wrote:
The internal resistance of a battery does not change its Ahr
capacity. Not even a tiny amount.
That is correct. AMPhours are not affected by internal resistance.
WATThours are, because internal resistance causes a
Very straight forward, Lee.
-Original Message-
From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Lee Hart via EV
Sent: 08 May, 2014 6:56 AM
To: Electric Vehicle Discussion List
Subject: Re: [EVDL] Peukert # with Lithium Batteries
Man, this Peukert stuff is still confusing people!
Lee wrote:
But suppose you want to know how far you can go at a given speed (i.e. a
given load).
That is a much more complex calculation
I rented a Leaf recently, and I really don't like the miles remaining
thing. It varies too much. If you're going uphill, it gives a smaller
number of miles
It's long been a big complaint - the guess-o-meter - across many forums.
Nissan made some improvements, supposedly, but I completely agree with your
preference.
I do my own range calculations. They aren't very accurate either but at
least I know my basis. I have a general idea on the miles/kwh
The LEAF has always had an empty-full gauge, consisting of stacked bars
on the right side of the screen in front of the driver.
From 2013 forward, due to requests from drivers, there's also a numeric
battery percentage option that can be displayed in the middle of the
driver's screen.
You
On 05/08/2014 09:43 AM, Bill Dennis via EV wrote:
Lee wrote:
But suppose you want to know how far you can go at a given speed (i.e. a
given load).
That is a much more complex calculation
I rented a Leaf recently, and I really don't like the miles remaining
thing. It varies too much. If
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I like the miles remaining. It's fun to play with it and see how much driving
style affects range. Very direct feedback.
david.
From: Bill Dennis via EV ev@lists.evdl.org
To: 'Electric Vehicle Discussion List' ev@lists.evdl.org
Sent: Thursday, May 8, 2014
That's a good point and I admit to doing the same. However, it's still
pretty useless for its intended purpose :)
-Original Message-
From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of David Ladd via EV
Sent: 08 May, 2014 10:59 AM
To: 'Electric Vehicle Discussion List'
Subject: Re:
Why are the list From: addresses of the form:
From: Persons Name via EV ev@lists.evdl.org
Rather than the users normal email address?
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On 2014-05-08 12:23 PM, John Lussmyer via EV wrote:
Why are the list From: addresses of the form:
From: Persons Name via EV ev@lists.evdl.org
Rather than the users normal email address?
Because Yahoo and AOL have started implementing DKIM in a broken way
that blocks mailing lists (As they
is the energy lost to heat.
Jan Steinman, {link:http://www.EcoReality.org; textDesc:EcoReality
Co-op :link}
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Hello All,
I was just able to talk with Bruce and he sounds pretty good. As we spoke,
he was having tubes connected and still had treatments and more tests
planned but is hoping to be out of the hospital by early next week. They
need to get his heart to beat normally instead of too fast.
On 8 May 2014 at 11:23, John Lussmyer via EV wrote:
Why are the list From: addresses of the form:
From: Persons Name via EV ev@lists.evdl.org
Rather than the users normal email address?
The mail format changed with last night's upgrade of the listserver
software.
With new mail
Gail, many thanks for the report! It's good to hear he's on the road to
recovery.
David Roden - Akron, Ohio, USA
EVDL Administrator
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On Thu, May 8, 2014 at 1:49 PM, Jan Steinman via EV ev@lists.evdl.org wrote:
From: David Nelson via EV ev@lists.evdl.org
No. Don't confuse charge capacity with energy capacity. None of the
charge capacity gets turned into heat, only some of the energy
capacity gets turned into heat.
Other
On 2014-05-08, at 17:01, David Nelson wrote:
Seems a bit pedantic to me, but no worries.
What I meant by fairly constant is that the terminal voltage changes by
millivolts as the current through the internal resistance goes from 0 to a
couple hundred amps. So yea, that change in voltage
From: Lee Hart
Just be aware that this is not a true resistor, and not constant. It is
the combined net effect of all the internal processes; mechanical,
chemical, state of charge, temperature, aging, etc.
Jan Steinman via EV wrote:
Which is where Mr. Peukert came in the door, right?
Pretty
(919) 513-0418 Desk
michael.e.r...@gmail.com
michael.e.r...@gmail.com
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On 2014-05-08, at 20:33, Michael Ross wrote:
I hear power density discussed...some chemistries have more or less of
this
Power has a time component so maybe power density has to do with how fast you
can get the work done with a battery? Probably a structural issue more so
than a
A drag racer would want a battery with a high power density. A
commuter with a long commute would want a battery with a high energy
density. Simplistically, in a high power density Li battery there
would be more plates with thinner carbon paste so that the energy can
come out quickly and a high
David,
Thank you for locating him. I would have had no idea how to reach him
without the information you provided. He sounded fairly optimistic but the
description of all the repairs still needed are rather worrisome and he is
planning a slower lifestyle when he is out of the hospital. He
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