First with screwdriver I open the charger and inside is circut board where is two wires that give 5 volts.I connect 2 leds in serial and add 2 more leds in parallel.
All that I put inside the charger and glue it.
With energymeter I measure that this led lamp pull about 2 watts.
Visit my blog for more projects:http://macoprojects.blogspot.com
Subscribe to me :http://www.youtube.com/subscription_center?add_user=macobt
Follow me on facebook:https://www.facebook.com/pages/Maco-projects/460101797400258