He has this charger?
http://www3.towerhobbies.com/cgi-bin...&I=LXPYT8&P=ML
If so, the Checkpoint balancer will plug right into it and a battery pack will plug directly into the balancer, nothing else needed. He'll only be able to charge 1 pack at a time like that though. I have a very similar setup, but use the Duratrax ICE charger and Trakpower V-Balancers: