On Wed, May 7, 2014 at 11:06 PM, Jan Steinman via EV wrote:
>> From: Bill Dube
>>
>> 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
> From: Bill Dube
>
> 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 dissipated by internal
resis
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>
>
>
> Drag racing icon Garlits sets electric-vehicle record
>
>
> Friday, May 02, 2014
>
>
> by Phil Burgess, National DRAGSTER Editor
> -- next part -
No reply needed just yet.
David Roden
EVDL Administrator
http://www.evdl.org/
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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" sooner, you haven't act
The internal resistance of a battery does not change it's Ahr
capacity. Not even a tiny amount. (If the is very large, it may
change how you pick when 100% DOD is reached, however.)
The same number of amps will flow. The voltage will depend upon the
internal resistance, but not the Ahrs.
Li
Thanks Lee.
Dennis
-Original Message-
From: ev-boun...@lists.evdl.org [mailto:ev-boun...@lists.evdl.org] On Behalf Of
Lee Hart
Sent: Wednesday, May 07, 2014 1:37 PM
To: Electric Vehicle Discussion List
Subject: Re: [EVDL] Peukert # with Lithium Batteries
Pestka, Dennis J wrote:
> So let
Pestka, Dennis J wrote:
So let me ask another question.
Using this E-Meter to track the state of my pack, am I better to watch:
- Kwhr's used
- Ahr's used
- % Remaining
- Voltage at state of rest.
- Something else ?
When you don't know much about the pack, I would watch voltage under
On 7 May 2014 at 11:45, Lee Hart wrote:
> Your best bet is to use the Link-10 to measure the actual capacity of
> the pack at two different rates of discharge. There's an equation in the
> manual to calculate the Peukert exponent from that data.
And an online calculator here :
http://www.evdl.o
Bill Dube wrote:
I used a setting of 1.00 on my pack of 100 Ah ThunderSky cells. Seemed
to work just fine.
Willie2 wrote:
Yep, "1". You are likely to find the meter counts back to nearly exactly
zero on charging. That's a good indication you are getting almost all
the charge energy back on dis
So let me ask another question.
Using this E-Meter to track the state of my pack, am I better to watch:
- Kwhr's used
- Ahr's used
- % Remaining
- Voltage at state of rest.
- Something else ?
Thanks;
Dennis
Elsberry, MO
Bill Dube wrote:
I used a setting of 1.00 on my pack of 100 Ah ThunderSky cells. Seemed
to work just fine.
1.0 will "work"; it just means the E-meter/Link-10 won't take discharge
current into account for its battery empty-full lights. It will still
indicate "low battery" voltage when the pack
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Drag racing icon Garlits sets electric-vehicle record
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Pestka, Dennis J wrote:
I just completed a Lithium installation on my 65 Datsun.
I'm resetting the parameters on my Link-10 E-Meter, and was curious what
Puekert Exponent people were using.
Based on what I've read, I was tempted to use 1.00, but wasn't sure if this was
right.
Have (50) 180 ah C
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Sounds great, 1.00 it is !
I'm really looking forward to doing some range testing this weekend.
I've been stuck at ~ 20 miles for quite a while. Living out in a rural area
didn't give me a lot of options of places to go.
I've been averaging ~ 250 - 275 Whr. per mile. Now I should be able to go a
On 05/07/2014 09:08 AM, Bill Dube wrote:
I used a setting of 1.00 on my pack of 100 Ah ThunderSky cells. Seemed
to work just fine.
Yep, "1". You are likely to find the meter counts back to nearly
exactly zero on charging. That's a good indication you are getting
almost all the charge energy
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I just completed a Lithium installation on my 65 Datsun.
I'm resetting the parameters on my Link-10 E-Meter, and was curious what
Puekert Exponent people were using.
Based on what I've read, I was tempted to use 1.00, but wasn't sure if this was
right.
Have (50) 180 ah CALB CA series cells, nomin
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