How many miles on lithium?

[Al-57]

I am looking real hard at lithium for my next pack.
The big question is will they live up to their specs of 1000 to 3000 cycles?
The specs say standard charge/discharge current of .3C, only 33 amps for a
100ah cell. Also, just a 10% change in DOD from 80 to 70 yields 1000 more
cycles! May be too risky at this point to drop $10K to $15K on a pack.


Any of the early adopters, what is the most miles you have put on a pack of
the large format lithuim cells so far?

Al

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[Willie McKemie-3]

On Fri, Jul 03, 2009 at 12:01:49AM -0400, Al wrote:

> Any of the early adopters, what is the most miles you have put on a pack of
> the large format lithuim cells so far?

I'm at about 5400 miles in 6 months.
http://www.evalbum.com/2314

--
Willie, ONWARD!  Through the fog!
http://counter.li.org Linux registered user #228836 since 1995
Debian3.1/GNU/Linux system uptime  565 days 23 hours 51 minutes

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[Bob Rice-2]

   Hi EVerybody;

   OK how MANY miles on a charge you guyz getting? Any 100 mile runs? Or
150? Like the PRODUCTION EV's are getting? THIS is what the REST of us
Sheeple wanna hear? Can I drive off to, say, Boston, and get HOME again,
without any Lithium Teakettles or dismaying voltage sag? Can I/we get away
with an occasional LONG trip, IF yur nice to yur Badd-eries the rest of the
time?

    Or if not? Why not? Am I gunna drop 10-15 K for a car load of moody
batteri? Not to rain on anybodies parade, but ARE we making any progress?
Come on! Make my day! Tell me how great yur Lithiums are? Til SOMEBODY steps
up to the Governmental plate and busts the MNH patents and we enjoy
productrion (EV-1 and Rav-4, by Toyota,) performance in our crappy
conversions?

   Oh yeah? Happy 4th!!!!!!!!Hang out yur flag and Smile!

      Seeya

      Bob
----- Original Message -----
From: "Al" <bigg_al@...>
To: "Electric Vehicle Discussion List" <ev@...>
Sent: Friday, July 03, 2009 12:01 AM
Subject: [EVDL] How many miles on lithium?

>I am looking real hard at lithium for my next pack.
> The big question is will they live up to their specs of 1000 to 3000
> cycles?
> The specs say standard charge/discharge current of .3C, only 33 amps for a
> 100ah cell. Also, just a 10% change in DOD from 80 to 70 yields 1000 more
> cycles! May be too risky at this point to drop $10K to $15K on a pack.
>
>
> Any of the early adopters, what is the most miles you have put on a pack
> of
> the large format lithuim cells so far?
>
> Al
>
> _______________________________________________
> General EVDL support: http://evdl.org/help/
> Usage guidelines: http://evdl.org/help/index.html#conv
> Archives: http://evdl.org/archive/
> Subscription options: http://lists.sjsu.edu/mailman/listinfo/ev
>

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[Willie McKemie-3]

On Fri, Jul 03, 2009 at 08:29:26AM -0400, Bob Rice wrote:
>    Hi EVerybody;
>
>    OK how MANY miles on a charge you guyz getting? Any 100 mile runs? Or
> 150? Like the PRODUCTION EV's are getting? THIS is what the REST of us
> Sheeple wanna hear? Can I drive off to, say, Boston, and get HOME again,
> without any Lithium Teakettles or dismaying voltage sag? Can I/we get away
> with an occasional LONG trip, IF yur nice to yur Badd-eries the rest of the
> time?

Well, Bob, I've posted several times about my opinions and experience
with my TS LFP260s.  I've stated that I've drawn 301ah out of them as a
test.  That puts the maximum range at over 150 miles, though we rarely
put more than 100 miles on a charge.  I chose large cells, 260ah, to
maximize life; they are rarely called on to give more than 1C
discharge and we meet our trip needs with well under 70% SOC.  Voltage
sag is not noticeable; we start at 155-160v and I've never noticed less
than 140v.

At 5400 miles, I've put less than 100 cycles on the pack.  Well, maybe
a few more than 100.  Before I was confident of the range, we would
charge after every trip and our minimum trip is about 40 miles.  Now,
we might do a 60 mile trip plus a 40 mile trip before charging.  If we
have two 60 mile trips in a row, we will charge before the second.

The conversion has had what I suspect are normal teething issues:
1) the Curtis controller has been replaced with a Logisystems and my
power dropout and surging problems have disappeared.
2) the heater blew it's fuses on first use and it had to be re-wired
3) the air conditioner works well, but looses it's refrigerant.  Also,
it eats belts.
4) I've had several cell balancers die, probably due to my
mis-handling.
5) It took me two weeks to get the cells in balance initially.
6) The Zivan came mis-configured for the pack

Since the initial balancing, using the car is simply a matter of
putting electricity in and then driving it out.  The TBS meter gives me
an accurate measure of how much energy has gone in the pack, how much
has come out, and (therefore) how much is available at any and all
times.

The Thunder Sky cells have caused me ZERO problems.  So far.

--
Willie, ONWARD!  Through the fog!
http://counter.li.org Linux registered user #228836 since 1995
Debian3.1/GNU/Linux system uptime  566 days  2 hours 27 minutes

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[gottdi]

Flag's UP :)




On Jul 3, 2009, at 5:29 AM, Bob Rice wrote:

>   Hi EVerybody;
>
>   OK how MANY miles on a charge you guyz getting? Any 100 mile runs?  
> Or
> 150? Like the PRODUCTION EV's are getting? THIS is what the REST of us
> Sheeple wanna hear? Can I drive off to, say, Boston, and get HOME  
> again,
> without any Lithium Teakettles or dismaying voltage sag? Can I/we  
> get away
> with an occasional LONG trip, IF yur nice to yur Badd-eries the rest  
> of the
> time?
>
>    Or if not? Why not? Am I gunna drop 10-15 K for a car load of moody
> batteri? Not to rain on anybodies parade, but ARE we making any  
> progress?
> Come on! Make my day! Tell me how great yur Lithiums are? Til  
> SOMEBODY steps
> up to the Governmental plate and busts the MNH patents and we enjoy
> productrion (EV-1 and Rav-4, by Toyota,) performance in our crappy
> conversions?
>
>   Oh yeah? Happy 4th!!!!!!!!Hang out yur flag and Smile!
>
>      Seeya
>
>      Bob
> ----- Original Message -----
> From: "Al" <bigg_al@...>
> To: "Electric Vehicle Discussion List" <ev@...>
> Sent: Friday, July 03, 2009 12:01 AM
> Subject: [EVDL] How many miles on lithium?
>
>
>> I am looking real hard at lithium for my next pack.
>> The big question is will they live up to their specs of 1000 to 3000
>> cycles?
>> The specs say standard charge/discharge current of .3C, only 33  
>> amps for a
>> 100ah cell. Also, just a 10% change in DOD from 80 to 70 yields  
>> 1000 more
>> cycles! May be too risky at this point to drop $10K to $15K on a  
>> pack.
>>
>>
>> Any of the early adopters, what is the most miles you have put on a  
>> pack
>> of
>> the large format lithuim cells so far?
>>
>> Al
>>
>> _______________________________________________
>> General EVDL support: http://evdl.org/help/
>> Usage guidelines: http://evdl.org/help/index.html#conv
>> Archives: http://evdl.org/archive/
>> Subscription options: http://lists.sjsu.edu/mailman/listinfo/ev
>>
>
>
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[mark at evie-systems]

I don't know how many miles is this pack, but the range is coming in at
about 35 miles per charge.  It is running China-Hipower, 100ah cells,
32ea.  He's been running with these cells for about a year now.

http://www.evalbum.com/1309

Al wrote:

> I am looking real hard at lithium for my next pack.
> The big question is will they live up to their specs of 1000 to 3000 cycles?
> The specs say standard charge/discharge current of .3C, only 33 amps for a
> 100ah cell. Also, just a 10% change in DOD from 80 to 70 yields 1000 more
> cycles! May be too risky at this point to drop $10K to $15K on a pack.
>
>
> Any of the early adopters, what is the most miles you have put on a pack of
> the large format lithuim cells so far?
>
> Al
>
> _______________________________________________
> General EVDL support: http://evdl.org/help/
> Usage guidelines: http://evdl.org/help/index.html#conv
> Archives: http://evdl.org/archive/
> Subscription options: http://lists.sjsu.edu/mailman/listinfo/ev
>
>

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