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A123 20AH cells source?
- Thread starter neptronix
- Start date
jimw1960
10 kW
stoiko said:
He already said it says "made in Korea." The rep from OSN Power also told me they are made in Korea. It would be nice to find that source to save on paying the Chinese middleman. I assume these are B-grade cells.
jimw1960
10 kW
toolman2 said:
That picture stoiko linked is just a stock photo from the A123 website. Only makes sense that they would promote themselves with a made in USA version. The made in Korea ones are still legit.
lesdit
100 W
You want to pay $70 per cell ? 8)toolman2 said:
John in CR
100 TW
lesdit said:
No, I want to pay $7/cell for a crate that some overpaid union guy with mafia ties arranged via the back door.
miro13car
100 kW
FalconEV sells A123 20Ah flat cells for $80 /!!!!!/ dollars.
Call it what you want but the Falcon must be sure they are below 1miliOhms each one of them!!!
for such a price.
what do you think, look at FalconEV pictures, terminals are slightly different, I think they cells passed the A123 quality tests.
BTW fist time I am reading about LiFePo cells below 3V arrived with shipment.
MC
Call it what you want but the Falcon must be sure they are below 1miliOhms each one of them!!!
for such a price.
what do you think, look at FalconEV pictures, terminals are slightly different, I think they cells passed the A123 quality tests.
BTW fist time I am reading about LiFePo cells below 3V arrived with shipment.
MC
AndyH
10 kW
Buy a couple and check them out, Miro.miro13car said:
webfootguy
100 W
A box of 2 unobtanium cells arrived yesterday. 1st cell weights in at 505 grams and measured 3.294 volts on arrival. It has the "made in USA" printing (not Korea) and looks brand new. More when I have done some charge / discharge cycles on the cells. I have not measured the second one yet.
Attachments
jimw1960
10 kW
Those motorcycle packs would certainly save a bunch of labor and no need to buy or build a decent spot welder. Plus I like that they are modular and come with balance leads so you could use them pretty much the way you would lipo, without any BMS. For about $600 you'd have a nice 48v/9.2 Ah lifepo4 battery capable of 30C discharge. You could buy lipo cheaper, but assuming this would have double the life and safer chemistry, it is pretty competitive over the life of the battery.
LiFe
1 W
Interesting, the lot code, Batch#, and S/N indicates it's not that old... It's the real deal. Congratulations
webfootguy
100 W
LiFe said:Interesting, the lot code, Batch#, and S/N indicates it's not that old... It's the real deal. Congratulations
Any idea how to read the lot, batch# to get a mfg date?
webfootguy said:LiFe said:Interesting, the lot code, Batch#, and S/N indicates it's not that old... It's the real deal. Congratulations
Any idea how to read the lot, batch# to get a mfg date?
yes, do tell.
and webfootguy, where did you get your cells from?
webfootguy
100 W
I saw the A123 20Ah cells on alibaba.com (for sale by OSN POWER TECH). I got a quote from them which was like $45 per cell but the shipping was the killer ($48 for 5 cells) and they wanted me to wire them the money (no credit card or paypal. No deal to a China company on this one from me).
I did a Google search on the exact model number. One of the links I found was to:
http://www.a123rc.com/goods-468-Excitingly+Powerful+A+123+20ah+PRISMATIC+CELLS.html
They had the same cells for $40 with free shipping (*and* they took paypal which affords a fair amount of consumer protection). I purchased 2 cells and waited the 2 1/2 weeks it took to get them from Hong Kong. Price has since gone up to $50 but it looks like the real deal. These must be from the new A123 plant in Michigan.
I did a Google search on the exact model number. One of the links I found was to:
http://www.a123rc.com/goods-468-Excitingly+Powerful+A+123+20ah+PRISMATIC+CELLS.html
They had the same cells for $40 with free shipping (*and* they took paypal which affords a fair amount of consumer protection). I purchased 2 cells and waited the 2 1/2 weeks it took to get them from Hong Kong. Price has since gone up to $50 but it looks like the real deal. These must be from the new A123 plant in Michigan.
auraslip said:
yep, and could be cheaper than many lipos when you add the freight -and the same wh per kg as lipo too, basicly wins on every count especially by haveing 10-20+ times the life.
ok webfootguy, now we do have an odd situation, my cell (from the same poeple a123rc) was marked up made in korea and yours usa, do they collect seconds from everywhere? allthough yours might not have the self discharge that mine does? can you charge it to 3.6v, hold it there for a good 1/2 hour+ (till the amps drop to .1a) then take it straight off the charger -good cells take overnight to get below 3.5v but mine from a123rc took 10 mins.
a123rc are now not responding to any of my 5 emails about larger numbers..
miro13car
100 kW
webfootguy,
if you can only measure internal resistance with Ir meter it would tell us immediately are your cells meeting QC requirements or not.
IR measurment tells all about cell.
BUT IF NOT WHAT IS VOLTAGE DROP under say 50A load, it also would tells us a lot.
They are cells for sure A123 but are they QC rejected?
That Falcon sells them for $80 is intriguing and curious.
On Falcon web site you can clearly see photo that they are below 1mohms.
MC
if you can only measure internal resistance with Ir meter it would tell us immediately are your cells meeting QC requirements or not.
IR measurment tells all about cell.
BUT IF NOT WHAT IS VOLTAGE DROP under say 50A load, it also would tells us a lot.
They are cells for sure A123 but are they QC rejected?
That Falcon sells them for $80 is intriguing and curious.
On Falcon web site you can clearly see photo that they are below 1mohms.
MC
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