I use this charger.
http://traxxas.com/products/parts/ch...hargerplus6amp
It available for about 100 bucks. It works very well. Easy to use. Compact. Has a storage and balance mode. Can bring nimh batteries back to life with the cycle feature. I've used it and it does work. Has a built in power supply. Is ac/dc which is a big plus to me. You can get an adapter to charge two batteries at a time. I think this is a very good charger for the money with lots of options.