ThatGuy007:
Zoomkat, that is basically what im asking, but my battery is 11.1v so i need to step it down, and i wanted to use a transistor to do that. I know it would step down to like 4.3v with the drop across Vbe, but i am not sure on how to correctly set up the transistor.
To step down a 11.1 voltage source to 5 volt requires a voltage regulator chip. You can't do that with simply a single transistor.