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        Help! link to a123

#1 phil alvirez Oct 12, 2012 05:37 AM

link to a123
 
can anybody please provide link for data on a123?
specs, sizes, capacity, sources.
thanks

#2 bossee Oct 12, 2012 06:36 AM

Hi,

Hacker sell LiFe (=a123) battery pack, rather many varoius cells and mAh, and C.

http://www.hacker-motor-shop.com/e-v...&c=2989&p=2989

Little translation for You to do there from German to English but I think it is not that hard to see the specifications (cells, capacity, volt, max amp continous/short time, weight, seize).

In US it is a Hacker reseller but I do not know if they sell TopFuel LiFe packs also.

Do You want to use it for electric motor, receiver, transmitter or what?


/Bo

#3 Ken Myers Oct 12, 2012 06:53 AM

Phil,

Sent you an email this morning to links with specs and prices.

LiFe are not A123 Systems Inc. cells. Real A123 cells are the only ones worth considering. Links for the 26650 size cell in 2500mAh and the more common 2300mAh cells are here on RC Groups. Searching for A123 in the Batteries and Chargers tread should yield a bunch more links for you to investigate.

Ken

#4 everydayflyer Oct 12, 2012 07:17 AM

Years ago K2 Energy Solutions had LiFePO4 cells that were extremly close to sa e performance as A123 Systems cells.

http://www.rcgroups.com/forums/showt...3&highlight=k2

Charles

#5 Ken Myers Oct 12, 2012 08:09 AM

I've still got a pack of K2 cells. I didn't find them all that close in performance to the A123s. Steve at http://www.battlepack.com still sells them in 2500mAh and 3200mAh sizes.

#6 bossee Oct 12, 2012 08:31 AM

Just curious, what are the main advantages of A123 cells (by Systems Inc) over other LiFe cells?

/Bo

#7 Julez Oct 12, 2012 08:32 AM

Quote:

Hacker sell LiFe (=a123)
That is not the case. There is a difference between LiFePo4 and A123.

For the OP:

http://www.google.com/search?q=lifep...w=1271&bih=833

#8 Ken Myers Oct 12, 2012 09:08 AM

Quote:

Originally Posted by bossee (Post 22980854)
Just curious, what are the main advantages of A123 cells (by Systems Inc) over other LiFe cells?

/Bo

Seriously, and not trying to be flip; the A123 cells work nicely at about 100 watts out per cell, others don't. Of course A123s work well at less current or more, but the sweet spot for the 2300mAh cells is about 35 amps, which yields just shy of 100 watts out per cell. The K2 Energy cells fall short on providing the power and do have a higher internal resistance than those produced by A123. There are a lot of LiFe-Poly packs that seem to be aimed at receiver and transmitter power. I have no firsthand experience with them, so really can't comment.

#9 bossee Oct 12, 2012 09:16 AM

OK, thanks for the answer.
/Bo

#10 tacx Oct 12, 2012 09:57 AM

Try RadicalRC here. I am happy with them so far.

http://www.radicalrc.com/category/A123-Cells-Packs-199

#11 phil alvirez Oct 13, 2012 01:35 AM

thanks all.
 
thank you guys. from the data you provided, seems that a123's are way more expensive than the lipos am using, and i can't find the reason to change. am happy with lipos anyway, i was just curious about the 123's.

regards


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