Get from Amazon.com : https://www.amazon.com/gp/product/B003XML8BC?tag=foodandfitnes-20

HQRP Kit AC Power Adapter and DC Coupler for Canon EOS 5D EOS 10D EOS 20D EOS 20Da EOS 30D

Product Description :
HQRP AC Adapter and DC Coupler plus HQRP Euro Plug Adapter
Allows the Camera to Draw Power Directly from an AC Power Source
Includes DR-400 Coupler replacement to Fit in Place of Canon BP-511 Battery
Safety Features High Efficiency and Reliability Automatic Overload cut-off
Compatible with Original AC Power Adapter Kit 1 Year warranty