I see your point now. For me it is not something that bothers me much, I will love a brass version and will never polish it 
I sure hope they keep it low-high. There was a poll either here or on Candlepower about low-high versus high-low, and it was a landslide in favor of low-high.
Iāve never seen clear anodization IRL but Iād try it. Iād honestly prefer some good āol fashioned color anodization, preferably in hunter/forest green. That color is sadly neglected in a lot of releases. Pink or purple would be great for the ladies in my life.
Now that Iāve played around with the raw aluminum version in low-high, Iām impressed. Operation is wonderfully simple. The two modes are nicely spaced. The low is very usable and lasts a long time. The high is very bright and reaches out well for a light this size. The tint and color rendition are excellent. The only thing keeping it off my keychain is that I donāt like the feel of the raw aluminum. Iām really excited about seeing anodized versions in low-high.
Ok I felt bad for poopooāing on the knurling without offering better feedback. Hereās a few minutes on a belt grinder. The mid section is clean looking and smooth now and I left the head as is for better grip. IMO, this feels and looks much better to me.
Good idea! I like the grippiness of the head but I feel the body will abrade my pocket. Iām going to throw it on my grinder.
Hi All, Are these coming back? low-high C01s BLF clear anodized?
See 11 posts back 
Anyone tried this with 10440 li-ion cells? Besides Noctiluco, that is.
Noctiluco said, in a related Sofirn C01S 4000K 100 lĆŗmenes thread at ForoLinternas, the torch becomes a lot brighter and works fine with li-ion. But he only tested the thing with protected Turdfire 
cells, this is the reason I am asking for further feedback. Does the C01S implements low voltage warning or cut-off for 10440s?
I have one C01S that I used for crash-testing, works fine but looks crap now. I will try one of the new Vapcell 10440 cells in it (seems more high drain even than the Efest 10440) and see what happens :smiling_imp:
Be wary of the low voltage cut-off thing, set a li-ion charger at hand djozz.
I wonder how does the thing work with higher voltage cells. āDDā with sense resistor limiter like in cheap SK98s? Did someone dissected its driver yet?
I have no idea, but since I started this hobby, the many cheap AA and AAA flashlights that i had either burned with a li-ion, or work well but never work again in boost modus, or keep working fine with either cells. I do not think the typical boost driver for AA and AAA cells are specifically designed to function with Li-ion cells but it is simply a side-effect of the circuitry.
Gonna wait for that :smiling_imp:
While waiting for a second batch of these to jump in the boat a get a couple And then get those Vapcell 
Low (Eneloop):
CCT = 3628K (Duv 0.0043)
Color Rendering Index (Ra) = 95.1 [ R9 = 82.9 ]
High (Eneloop):
CCT = 3750K (Duv 0.0040)
Color Rendering Index (Ra) = 95.7 [ R9 = 88.0 ]
The results are in, C01S on Vapcell 10440:
3sec 53 lumen
10sec 29 lumen
20sec 34 lumen
30sec 38 lumen
40sec
So the 10440 gave surprisingly a lower output than an Eneloop. It appeared that both the tail spring had collapsed, breaking contact, and that the driver stopped working as boost driver: lengthening the spring made the 10440 work again but not the Eneloop. One component on the driver, on the left, showed a tell-taling bulge:
Note that thereās no easily identifyable boost coil.
RIP, thanks for taking one for the team.
Wellp, Noctiluco said it worked on li-ion. So something's different, for obvious reasons. Maybe djozz's C01S wasn't the :???: current version.
Curious.
Inductors (coils) come in chip-style packages that look very much like a SMD capacitor. Iām not so sure what those two components are towards the bottom: the reddish thing and the sparkly looking one. One of those might be the inductor. Granted, there are coil-less ways to boost voltage (eg, charge-pump) but I doubt thatās what weāre looking at.
Different surface-mount inductors:
Wellp, the red thing seems to be a 47ĀµF tantalum capacitor. Thus, the grey/silver finish sparkly looking thing must be the (tiny!) inductor.
If that is the driver inside current C01S flashlights, how can Noctiluco say his C01S works good on 10440 li-ion cells? May someone give an explanation?
Could it be because he is using protected Turdfire 10440s? :-D
:-)
Sorry to read that djozz :zipper_mouth_face: I was thinking it could survive butā¦not :zipper_mouth_face: So only Ni-MH and alkalines on this one! And it will do the job for sure
It was the test unit after all 
Thatās fine. I know itās not hip and exciting but I think this flashlight works just fine on NiMH.