I have one and I absolutely love it. It does everything they advertise. It will not let you charge anything wrong, it alarms and kicks out if you cross up the leads. Charges all my batts as quickly as I need and does a excellent job balancing lipos. Best 50 bucks I spent. Only one gripe is the knock off deans style connectors are too tight but that's nothing to turn me away from recommending it. It's the same circuitry as the Tenergy, and quite a few other high dollar chargers. Same displays, function keys...blah, blah. You get the point. I bought the Mystery B6 from "In the Sky" off E-Bay for 50 bucks. All the charge leads I needed, a power supply and a nice al. case for it. 50 bucks shipped to the door. They have since gone up on Buy it Now prices, people are catching on to what the chargers are.