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Old 10-29-2012, 04:35 PM   #11 (permalink)
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When you email a123 how long does it take to hear back?
I need some AMP20 cells and they haven't answered back.
My smaller LiFePO4 battery seems to be on its way out.

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Old 10-29-2012, 04:44 PM   #12 (permalink)
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I never got a reply from A123.

There apparently is one legit reseller, and you pay a good price for the cells...

A123 @Mavizen

I haven't inquired with them to get a price though.
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Old 10-31-2012, 10:03 AM   #13 (permalink)
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Thanks again.
I emailed them and have not gotten a reply.
Incase I dont hear back from them in the next day or 2 do you know of any legit ebay or amazon a123 sellers?
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
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Old 10-31-2012, 11:41 AM   #14 (permalink)
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I do not believe there are. Everything on ebay is a quality rejected cell like the ones I have.
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Old 10-31-2012, 12:58 PM   #15 (permalink)
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wasnt this a failed business, part of the obama stimulus to green energy companies?

http://www.technologyreview.com/news...y-controversy/

looks fishy.....
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Old 10-31-2012, 01:25 PM   #16 (permalink)
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While it may not be run all that great in the past, A123 has some of the most advanced batteries available. They were also recently bought out by Johnson Controls, a HUGE battery manufacturer. Nothing fishy here.

We talked about it here:
http://ecomodder.com/forum/showthrea...1-a-23715.html
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Old 11-01-2012, 05:00 PM   #17 (permalink)
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The A123 "Nano cells" are almost 5 time the price of a Sinopoly or Winston. $2.24 per Watt/hr for A123. $.47 per Watt/hr for Winston which can discharge up to 3C and is rated for 3000 cycles at 70%.
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http://www.sinopolybattery.com/Clien...7251418462.pdf
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Old 11-01-2012, 05:30 PM   #18 (permalink)
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Good lead batteries for home solar installations are still really cheap at $.12 per Watt/h. There is absolutely no sense in putting a lithium starter battery in a pick up truck.
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Old 11-01-2012, 11:18 PM   #19 (permalink)
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The 3C discharge rate of the large prismatic cells work great for a typical EV conversion. Plus the large format makes pack assembly much easier than the smaller A123 cells.

I think the interest in A123 is more for their high discharge to weight ratio, for use in a higher performance vehicle. A relatively light pack can make a lot of hp compared to Sinopoly or Winston. My 40V, ~75 Ah, 65 lb A123 packs will sustain 19C (about 1,400A) with less than 20% voltage sag, and can deliver at least 2,400A.



Quote:
Originally Posted by sendler View Post
The A123 "Nano cells" are almost 5 time the price of a Sinopoly or Winston. $2.24 per Watt/hr for A123. $.47 per Watt/hr for Winston which can discharge up to 3C and is rated for 3000 cycles at 70%.
.
http://www.sinopolybattery.com/Clien...7251418462.pdf
.
Electric Motorsport EV Parts
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Old 11-02-2012, 05:27 AM   #20 (permalink)
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What does a daily 19C discharge do to the cycle life?

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