You'll want a lipo charger + lipo balancer.
It used to be seperate items, but now there are some manufacturers who incorporate them into a single unit for convenience as well as price reduction.
This is one of them, a good one in fact. Small and blue backlit
http://shop.radiocontrol-sports.com/...productId=1291
Or they even come in AC/DC version which you can just plug direct to the wall. Saves you on hooking up the external power supply and tons of wires on the put table.
http://shop.radiocontrol-sports.com/...productId=1292
