I purchased a Thunder AC6 about 6 weeks ago and it works great. For an extra $10.00 you can have an AC unit (AC6). It has a built in balancer and it comes with an AC power cord as well as several other cords to use with DC. It comes with a CD and an instruction manual. I use it to charge my 2S & 3S lipos as well as some older NiCD's & NiMH. It is a 50 watt charger so you will be able to charge at 5amps maximum which is more than sufficient for what I am doing. As the technology increases, the maH will increase as well on the lipo's, but for now it is where it is. My charger cost me $55.00 plus shipping which I thought was a steal. It does everything I need it to and I didn't have to spend a lot of money. Hope this helps!!