I use a Super Brain 960 its a good basic charger. If you add a cpu fan on top that will help stop it from faults peaking sometimes on larger batteries. I also use a Competition Turbo 35 GFX this is a pricey charger but it will do the job all the way around with batteries of all ranges and sizes. I can upgrade mine to charge Lipo's for $50.00 witch I will do when I convert my Hellfire to electric.

Super Brain: http://www.amazon.com/Super-Brain-96.../dp/B000OPVLT0

Turbo 35 GFX: http://www.competitionelectronics.com/pages/GFX.html