I have one of these is a 3D Maglite running on, well, 3D's. Just grind off the threads and it drops right in. Remove some ano from the head inside and you get a current path. Works very well.
On mine, there's not a lot of difference between having 2 LED's lit and having 3 lit. Should be 50% more light, but I'm only seeing 10-20% more (on the lux meter). So for those of you that have 7.2V or higher setups, is there a big jump between 2 and 3 LED's lit? Also, have any of you tried more than the recommended 9V? Id like to run 3 3.0V RCR123's in it, but the initial is 3.3-3.6 each or 3 sets of 4AA's (but that's 3.6x3). That gets a bit over the 9V max. Can it take it? Anyone getting 500 lumens out of theirs?
Thanks,
Kevin