I had the thunder power tp610c and it is a good charger with a built in balancer and does all the battery you want it too. Its easy to program and the price is not too bad, around $130. I had a screen problem with it and sent it back in, and upgraded to the tp 1010 with a external balancer. The tp1010 and balancer is a bit more money but i wanted the extra features that go with the 1010.