Ipod or iphon charging with Lipo Rider Pro

Where can I find a schematic of the Lipo Rider Pro. I want to use a voltage divider on the USB out to get an Ipod or Iphone to charge.
This does not work with the circuit as it is!

Hi peter,
http://www.seeedstudio.com/wiki/Lipo_Rider_Pro#Resources

If you want to charge your iphone , you need to know what is voltage signal of D+/D- .

Deray