halflings:
Oh, just a last question:How can I recharge this ( http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=16331 ) kind of batteries ?
You need a lipo-charger. Like this:
Maybe you need (power cord) adapter for your country too. Or new cord. It is same type as in laptop comters, from "wall" to laptop power unit.
And how to use charger:
Always use "balance" charhing mode.
Next charger can make the job, but if you will buy bigger batterys, charging will take long time.