Two days ago I made a light out of a luxeon directly driven from 3 NiMh AAs. I measured it, and it was drawing about 600ma. Today I moved it to a new aluminum HS (you may have read about the steel one /ubbthreads/images/graemlins/wink.gif ) and I measured it again...drawing 310ma from the same batteries. Ummm...what the hell? /ubbthreads/images/graemlins/confused.gif It seems to be just as bright as well... /ubbthreads/images/graemlins/confused.gif /ubbthreads/images/graemlins/confused.gif