Is there interest in a group buy of A123 20ah prismatic pouch cells?

Just a word of warning about A123 - the company and not their specific products. The company recently issues a "going concern" notice meaning that they are warning investors (I am one) about their long term viability as a company. The notice was accompanied with them saying that they were actively looking for outside investors.

So, just something to weigh if you are considering this.

 

Scarry news, sounds like " take the goverment money grants and run...."

 

This was in february not recent
Trouble is still the same but its nor bankrupped yet

-Htc Tapatalk

 

The notice that I mentioned was from mid-May. The whole point of such a notice by a publicly traded company is to let everyone know that it has significant issues well before they get to the point of bankruptcy. It is not a death notice, but it is akin to a doctor telling the family of an accident victim that the outlook is not great and that they should at least begin to ready themselves for the possibility of the of death.

The reason that I mentioned it was that such a disclosure would make me worry about support and warranty issues down the line

 

I guess the point is that if a cell goes bad down the road, then you may not be able to get a replacement. Since the characteristics of these cells are different than other LiFePO4's then you wouldn't (I guess) be able to do a replacement with a cell from another company. Presumably somebody would buy the rights to make these cells in or before any bankruptcy and continue making them. That's a maybe.

 

A quote of prevention will save a lot of headaches

 

I have thought about a backup should I get bad cells for some unknown reason and the A123 20AH pouch cells were no longer available to purchase. My battery pack is made up of five containers. Each container contains 14 x A123 20ah pouch cells connected in series. My contingency plan would be to replace each of the 14 cells in one container with two Headway cells 10AH connected in parallel. I cannot see a problem with doing this. Whatever differences there may be they will be protected by my miniBMS. Whatever differences thee are in cell voltage while discharging would not make any difference. Whatever differences ther are in each cell internal resistance will just add up to the total internal resistance of the complete battery pack.

 

Nice

Any closeups? Like little dens on the batteru cells or so like i hat

-Htc Tapatalk ( sorry for auto spell correct )

 

I am interested in 156 cells and my friend also interested in 72 cells. I just need to figure out the connections before I commit.

 

I'm not liking this new conversation option. Since we no longer send private PMs. Eric i started a conversation with you. Check your inbox to see if you got it

Thanks

 

ericbecky did you or are you listing some 123 on ebay currently

 

thanks
I may get some this fall/winter however I am still worried about "how to" do the connections and make battery pack.