I wanted a LED conversion for my DeWalt DW919 18V work light. The light is fairly cheap at $35 without the Ni-Cd battery (which I had from other tools). Googling led me to CPF, but the info here was sparse. I followed the link on this thread to
http://www.sinounion.com.hk/ and bought their Fusion6048 module from them off ebay for $31 shipped. Here is some more information on it.
Install would have been easy if i knew how the thing went together. You just unscrew the ring, take out the reflector and bulb, and drop in the new unit. The trick is to then put the existing clear lens back into the black bezel, then drop the supplied white rubber ring behind the lens and screw the whole thing together. The white ring applies a nice pressure to the LED module, keeping it connected to the bulb contacts in the back, and keeping everything from shaking (reference photo below). Install takes all of 2 minutes.
Out of curiosity I busted out the security torx driver, opened up the head, and took some measurements. My gently used, 2 year old Ni-Cd "XRP" battery showed 20.68V fresh off the charger, and 20.01V two days later. After a little use with the old bulb I did the following measurements and took all the pictures. With the existing incandescent bulb I measured 19.05V and .597A for a power draw of 11.4W. With the new LED module the numbers are 19.14V and .307A for 5.9W.
I like the light output of the LED. The center of the beam is a little brighter (hard to judge) but the center "spot" is much larger, the transition to the outside 'fill' light is much softer, and there is much more light outside of the central beam. I haven't used it in the shop yet, or under the car, but everything points to much better results. Having half the power draw will be nice not just from the longer run time, but from not having that much heat right next to my head - the normal bulb is pretty toasty.
Images below were captured with the same settings, ISO 200, f/7.1, 0.5s. The only difference is the white balance, which I left on Auto.
Full Size Images - https://picasaweb.google.com/103730272851707372536/Ledlightsum12Keith?authkey=Gv1sRgCOvShoblgoKlBA#