Any hobby quality charger that does NiMHs will do (As long as you have the means to hook the batteries to the charger). I use either my hobbico quick charge 2 or a bunch of Lenmar AA/AAA/9v chargers that came with my lenmar NiMH AAs (7h charge). You might try
www.nimhbattery.com or something like that for more consumer-level chargers, but a hobby-quality charger will always be best (like the Triton, which at $130 is a bit much for me).