I am using a GT Power 606-D it is dual power and can charge several types of batteries, but is limited to 6 amp output but I didnt have use for a bigger one at the time I bought it. I decided that I needed a second charger so I just ordered another one off of E-Bay from a seller in New York, going by the name Dirtcheaprc, for around $60 shipped, he shows one left right now. The only trouble I have had out of mine is that the fan is starting to have some noise issues, other than that it has served me well. It does balance charging and has a provision for a temp sensor but does not include one.