Buy from Amazon.com : http://fave.co/1xe2rCJ

Nikon EH-62B AC Adapter for Coolpix L1/S4/2200/3200/4100/4600/5600/7600 Digital Cameras

Product Description :
Keep image transfers going with backup power source
Limitless operation
Preserves battery life
Interference shield and convenient two-prong plug
For use with Coolpix 4100 3200 2200 and other models