Buying the KX2 LED head is also an option.
KX2 2007 version: http://www.candlepowerforums.com/vb/showthread.php?t=169212
KX2 2008 version: http://www.candlepowerforums.com/vb/showthread.php?t=191607
Both of them will give you quite a long runtime with the use of CR123's only.
If the KL1 head is the same reviewed here: http://www.flashlightreviews.com/reviews/surefire_kl1gen2.htm
I would say the runtime would be about 5h and 30 min with two AW18650.'
Edit: If you were to use an LED with higher efficiency you could gain more lumen with the same runtime or more...
Re: Muhahahahaha! M4/M3 LED setup 65% complete....
You can read more about it here: http://www.candlepowerforums.com/vb/showthread.php?t=208100
The way I opened the Z46 (M3 bezel) was boiling it in water and after that using a specially designed tool from RPM. But YMMV.
Very nice review. :clap:
I agree with you. It rocks!
I have the BigLeef 3C-85 but I'm usually running it with Lumens Factory HO-M6R. Very bright, long runtime and I can charge the cells to a higher voltage without overdring as much as with the WA1185.
That is the way I'm doing it. I have to use more force to get the next body on it than with other flashlights.
I also had to use a grinding stone to "unsharpen" the end of the springs. Sharp springs and pressure would otherwise tear up the end of the batteries.