Hello NotBrightNuf.
I have a quad-bored Mag3D, KIU socket, 12aa-3d battery holder, with 12 Titanium 1800 aa's running the Osram 100W 64623 bulb.
A few observations, fyi:
o As Aircraft800 stated, a better battery choice than Eneloops is called for. As much as I love my Eneloops, the voltage sag on 100W bulbs at about 10A is too high for them. Moreover, the output is more yellow than I want with Eneloops.
o I get 8 to 9 minutes of runtime on my setup. I seriously doubt the figures stating 15 min. runtime on a 100W bulb. Example: Assume the bulb draws 10 amps and that your battery setup yields 1 amp. Your runtime could be as high as 1/10 x 60 minutes = 6 minutes. Perhaps less.
o While I might have my battery setup generating over 15 volts at start-up, after the first few seconds, battery sag sets in and drops the overall battery voltage to 14.4v. As the run proceeds, the battery voltage drops to about 13.2. Moreover, resistance present in my light means that the actual voltage getting to the bulb is about 1 volt less. If you examine the discharge curves for even the very best batteries that can handle high discharge rates, they too have significant voltage sags under loads like 10A.
o In line with that, I estimate that my torch lumens range from 2,500 to 4,000 during a run, with the majority of the runtime at the lower lumen figure.
All in all, as often is the case in advertising, the claims appear to be exaggerated for the setup you described.
But, if you wish to have a very bright hotwire, check around the sales threads in these forums and you can find some choices out there to meet your needs.
Lastly, do read the threads of forum titans like LuxLuthor, as Aircraft800 alluded to. LuxLuthor is a most learned, valuable, contributor to these forums.
Best of luck!
