Quick question about A123 packs

[provo]

Hello,

Relatively new here but have been lurking in the dark for a long time now. Finally decided to build my own first ebike.

Here's the plan:
Magic pie 3 26" on the rear
~48v 20ah battery pack (I have to do long distance)
Cycle analyst

Now I found this on ebay:
http://www.ebay.com/itm/A123-AMP20M1HD-A-20Ah-Prismatic-Cells-/230836405612?pt=LH_DefaultDomain_2&hash=item35beec056c#ht_4098wt_1188
And noticed that the ebay account seems to be the same as a user on this forum who is selling A123 cells from dewalt batteries (?)

My question is how hard would it be to take 15 (or 14?) of these 20ah packs and make a single pack out of it? Can we use these for ebikes (are they some kind of fragile aluminum or are they a hard pack?)
What would I need? I know I would a bms but what else? Where can I buy the things I would need?

Please help me out...

Huge advantage for me on these packs is they are in Canada (where I am).

Also how would you guys recommend mounting a 48v 20ah pack? Too big for the falcon ev bag (im guessing it would be extremely tight... although I have seen claims that the ping 15ah 48v does fit.)?

Much love to all of you. You guys are so great.

 

[ohzee]

Real good info here. Multiple pack builds there some very good reading.

http://www.endless-sphere.com/forums/viewtopic.php?f=14&t=38761&p=620142&hilit=+a123#p620142

 

[Trick]

Nice find on e-bay, there provo. The dealer looks ok. If you buy from this guy, lets us know how it goes. I might just upgrade my A123- 26650's.
The price ($30.00 each) is pretty good too. If they are the real deal. I have to wonder where he gets them from.
Your plan sounds awsome, good luck with it.

 

[provo]

Thanks for the replies... the more I think about it the better it looks. How many cells would one use to get an equivalent of 48v? Are lifepo4 usually charged to 3.3 or 3.9?

Much love

 

[arkmundi]

Now I found this on ebay:
http://www.ebay.com/itm/A123-AMP20M1HD-A-20Ah-Prismatic-Cells-/230836405612?pt=LH_DefaultDomain_2&hash=item35beec056c#ht_4098wt_1188
And noticed that the ebay account seems to be the same as a user on this forum who is selling A123 cells from dewalt batteries (?)

My question is how hard would it be to take 15 (or 14?) of these 20ah packs and make a single pack out of it? .... Much love to all of you. You guys are so great.

The route I took - highly recommend the A123 AMP20 cells plus Agniusm's kit, which he's about to complete a second run of.

See below - I posted a complete build manual. Good luck!

 

[arkmundi]

Thanks for the replies... the more I think about it the better it looks. How many cells would one use to get an equivalent of 48v? Are lifepo4 usually charged to 3.3 or 3.9?

Much love

3.3 to 3.4 is typical, so 16 cells for a 48v pack
recommend Victpower, as there's lot's of good experience posted on this forum about them, they're really genuine A123 AMP20's, the price is great, flawless delivery into the US.

 

[provo]

Awesome info thank you so much. I am so grateful for all the people here and for endless sphere in general.

Straight up awesome forum with such kind people.

Pming agniusm as we speak to order a 16s kit.

Many thanks.

I will definitely post a follow up if I order from the ebay listing. Worth noting is he upped the price 15 dollars the day after I posted this... I have also contacted victpower to compare pricing.

 

[provo]

Figured I should post a quick update.

Ended up going with victpower as suggested. Absolutely mindblowing prices. I am really new to this but it seems obvious that I would not be doing any harm in recommending everyone jumps on this while they still can.

I bought two 48v 20ah assembled pack with shipping from mainland china to my door in 15 days for less than the pouches alone from the aforementioned Canadian seller.

Thank you so much for all your help. I am thinking of doing a build thread.

So far I have also purchased a sturdy rear rack and huge pannier bags as well (as I decided trying to fit one of these cells in the falconev.com bag would be a bit exaggerated (dimensions of one pack: 116x160x230mm)) and have a magicpie3, cycleanalyst, lumenator, 7 speed freewheel, and other goodies on the way too.

Much love to you all.