I built my own discharger with simple Radio Shack products, to much time on my hands at work
2 small lightbulbs, biggest voltage and mah we had there, couple plastic holders, and jumber cables. Dischargers my 9.6 1200mah battery fully in oh say 30-45 mins. Then plug it into my charger and done deal, no wear on the battery, no memory effect to them pesky nicads.