These guys are Hyperion dealer - here's the a123 balance tap that fits 2 - 6S.

http://www.allerc.com/product_info.p...oducts_id=3169

I got everything here except shrink which came from maxamps.

I soldered taps to the stock connectors using deans solder. Soldered main power wires directly to cell ends also using deans solder - had no probs.