I use that charger with my Orion 1100mah nimh packs. Works great. There is also a "universal" nimh charger made by MaxxProd Electronics www.maxxprod.com
that will charge both your rx and tx packs at the same time (if you decide to convert your tx to nimh). I use that charger also with excellent results. I converted my Lynx 3D to 1600mah nimh batteries. I can run 3 classes all weekend without having to worry about my tx dying. Between the maxxprod charger and ofna charger, all my vehicles are always ready for action.