I have no experience with the Team Orion battery, but if you're going to spend that much buy one of these:
http://www2.towerhobbies.com/cgi-bin...?&I=LXLZK6&P=C
They seem to rank high on these forums, and I should be getting a few in the mail tomorrow.
The peak detection sensitivity is the mechanism that tells the charger when to stop charging. MiMH usually use a slightly higher
peak (I use 8mv) than NiCds (6mv). I'm not familiar with your charger, but it seems like it's up to the task.