That copper braid is similar to what I'm using, except I use two strips to connect the cells together (with a gap in between them to allow the vent to remain unobstructed).
My guess would be that it is rated at 36amps continuous, but it could probably handle much more in peaks. In our vehicles the average current draw is typically around 20amps.
That configuration you linked to is not one I am totally familiar with. A while back I made 3s2p A123 packs into that format, where they were actually 3 x 2p in series. It was pretty complicated to do. This is a picture I drew up that demonstrates the internal connections:
http://img.photobucket.com/albums/v1...pA123short.jpg
I've built many A123 packs into various configurations, so I have enough experience working with them to know what needs to be done. It might not be obvious to you (at least right away) how the construction of that pack would be completed, and it's difficult for me to explain in words.