Flashlights unreliable in the datacenter?

The first was one of these 118mm x 23.5mm “Jaws Light” flashlights:

about the time of these threads, which was so underwhelming I barely got one battery through it then left it in a drawer for almost a year.

The 3C (or 3D?) XM-L and 2.8A Nanjg-105c upgrade made it very interesting; so, unable to find another, I bought this one:

https://www.fasttech.com/products/0/10002463/1198400-18650-diy-edc-led-flashlight-host-with-switch-refl

to build from scratch, at 115mm x 23.5mm. The threads are different, of course, so no “Lego”; and I like the second one better since it’s available, shorter and doesn’t have a friggin FISH silk-screened on it.

And as you can tell, they’re not truly “clones”, but merely the same roll-of-coins form factor as the S2, “and that’s close enough to perfect for me”… They’re closer to the S5, TBH, but I don’t see enough difference in the whole lot to be worth arguing over.

They both still had the ugly Cree color rings. Since the only “budget” TIRs I could find were 21mm, and this guy:
http://www.ebay.com/itm/5PCS-x-60-Degree-21mm-Reflector-Collimator-LED-Lens-For-Cree-XML-XM-L-LED-/221175825976?pt=LH_DefaultDomain_0&hash=item337f1b4638
listed them at 0.99, I popped on a set & installed them.

It’s not for “throw”, as I could throw one farther than it can throw light, but the beam is broad, all-white and awesome!! The 2.8A mode gets them quite hot, and that right soon, but they’re easy enough to step down to Medium, which is still quite bright.

Hope This Helps…

Dim