http://www.hobbycity.com/hobbycity/s...2-6S_series%29

I have this one, it works great. The only brawback is that if you balance during charging you can only charge at a 0.2Amp rate. I simply balance before charging and then charge at normal rates for a faster charge. Occasionally I charge at 0.2A while balancing, I figure it can only help.