with the new genereation of LiPos, the big advantage of the A123 cells are gone. Fast charging at rates of 5C can now be done with the new hyperion cells.

The big advantage you have with the A123s are still life cycle(1000+ charge/discharge), A123's resistance to "flame and blow up", and ability to run without an LVC.

! run 2, 3, 4 cells configurations in my vendetta st and i find that the A123 do not hold the voltage under heavy load as well as lipos. However the A123 do not drop voltage like lipos as well. You get 6.2-6.4 volts under heavy load until the battery is drained. Then the cells just drop off, and you are ready to charge.

I use the A123 cells in 18650 size from Black&Decker VPX battery packs. I can get them fairly cheap if you want a few packs. Shipping would be up too you but the packs are about $15 USD for a 2 cell pack.

msg me if you want some or want me to build you a few packs.

here's my 2 cell pack in my detta...(pics in the link)

http://www.rctech.net/forum/micro-mi...ml#post5976918