Instructables

Xbox battery charger and plug and play: combine the two?

I'm looking to wire up a plug and play cord to a xbox battery charging station so the cord used to power the station would essentially charge two batteries and a controller.
I've never dealt with USB charging, so any and all help would be great. Thanks in advance!

Take the input voltage from the cord, run it through a LM7805 voltage regulator to drop it to 5 volts then connect it to your female USB plug. Adding a capacitor to the output of the regulator to help smooth the voltage is a good idea as well.

I think this instructable may come in handy for you.

http://www.instructables.com/id/Universal-USB-Power-Supply-Kit/