If you already have a lithium polymer/ion programmable charger there is almost deffinatly a new download for it to charge A123 cells. I have looked a little into this as my purely Lipo/LiIon charger can now be updated to use A123s, nicads, NiMhs by downloading the new software from the manufacturers websites.
The standard balancers will also work very well with them, especially if used inline with the charger.