Good read.chimo. I posted a thread about this myself after running an informal
test of longevity on a CMG ultra "G" without me knowing it :huh2:
I had the light hanging over my PC keyboard to work at night when my daugther crashed on the couch so i didn't need to keep light's on.
I ran it on a ROV IC3 nimh AA and 9 times outta 10 I just left it on to run down. In about six mth's i took it down when it seemed to be a little dim.
I Put two E92's in it and another "G" one that new, was a little dimmer then my
"overhead" "G". It is as now noticeably brighter by a big margin, then the one i had been using
all the time over the PC. so these do go dim and down hill.
Side note, someone has to have said to the manufactor's of the light that it does work for 100.000 Hr's at least back a few yr's, because i keep the inserts, instructions, everything but the plastic package in a folder
most all 5mm LED are rated at 100,000 or 50,000 hr's. Nichia may not post
those runtimes now but i have to many brands and multiples of 5mm light's
so i just don't buy so many light makers deciding on that life span,i think
what is published now on there site wouldn't be the same when they came out with 5mm white LEDS. (imho ymmv never pet a burning dog
VDG