The D25S ramp goes forward or backward, rather than forward only, which I prefer.
The button on my SP40 also seems a bit stiff, which makes holding it to ramp a bit difficult for me.
I read this like an xkcd comic.
Gchart, first of all, congratulations on your family's new addition!
I was thinking about holding off on buying this light but then there was that blessed Vipon discount code. Anyway, somehow, I got the code and wham!, I've got a new addition, too 
.
When I got it, my question was how fast (rate & time) does it charge the battery in light(?). With the Sofirn stock batt., this is what I found:
Charge rate along with other parameters,
https://i.imgur.com/uOP5LFy.jpg
And, ultimately, the results,
https://i.imgur.com/D62iBnZ.jpg
I first discharged the battery with an Opus I keep at work so started this charge cycle in the evening. 0.9A isn't too slow but I'm a bit miffed at this taking 5 hours. I guess I'm used to charging with the MiBoxer at the house. If anyone here is familiar with these 'cable testers' you might shed some light about the charge time. Like the OP review findings, the end voltage was around 4.17V.
I've read some fairly negative comments where Sofirn could have added UI features like the SP32A and/or SC31 and I'd like those too. SOFIRN, SEND ME THE VERSION 2 FOR A REVIEW!
But I'm happy with the beam pattern, tint and definitely the 18350 tube. The beam angle is so wide, it's like a mule with a hop spot!
The Sofirn 3000 mAh is curretly in the MiBoxer to compare results between charge options. More to share...
I did a discharge test at 3.5A with the battery and got 29xx mAh. Seems like the battery is as advertised.
I bought a couple of these AP-15 headbands from Battery Juction for a better price than the Nitecore model.
I hear the perfect light for checking on babies is a gchart piggybacked MCU on a SP40. Hope all is well
I wouldn’t doubt it 
I’m currently putting two of my babies (well, toddlers) to sleep as we speak. Their nightlight? A custom Sofirn SC31. At first I just did an MCU swap. Then I went all out and designed a driver that uses a watch crystal to keep (extremely accurate) time. 10 hours on, 14 off. Ramping UI, e-switch LEDs as battery warning, etc. And with the MCU running at a super low clock rate, standby drain is like just a few uA.
Now that you mention it, I was going to disassemble my SP40 to peak at the PCB/MCU but my buddy still has it. Hmmm… I’m going to need that back!
Board is not public, it has a mistake I haven’t corrected… just did an air wire
I didn’t see gchart’s measurements and took my own:
~17.35mm where PCB sits
lens: 19.37 x 1.1mm glass, could probably fit up to 19.5-6mm max
9.07mm reflector+glass height
6.57mm reflector led opening
Guys, did anyone think about switching to a smooth reflector in this flashlight, and does it make sense to do this to increase the throwing distance?
Can anyone give some pointers on how to remove the bezel? Mine seems screwed in very tightly (glued perhaps?) and I might not be using the right tools for the job. The reviewers imply it is easy, without describing how they accomplished this feat.
I’ve always used “”snap ring pliers”:Amazon.com such as these:
I’ve not tried removing the SP40’s bezel though.
-Garry
I 3D printed a tool - here’s the model if you want it:
I don’t have DC-fix but I have sheets harvested from laptop screens that perform similarly. I might have to resort a sheet diffuse enough to erase the hotspot.
I think it’s time for me to invest in a pair or a set.
Thanks, I know little about 3D printing but there is one at a library near me…
I use something similar to garrybunk, but mine are just a small set of needlenose pliers. I’ve also seen some folks using a set of camera lens spanners found on AliExpress for like $10. They look pretty slick.
I tried 90º snap ring pliers on my SP40 and all it did was scratch up the bezel. 
Would have loved to swap in a TIR.
For traipsing through the woods though the beam is perfectly adequate. 4000K on the warm side, illuminates fallen oak leaves like nobody’s business.
Don’t mind not having moonlight mode. Low is just right for me.
Oh and since I avoid being outdoors in the rain and have a highly water resistant travel bag in which to store the flashlight, took the liberty of installing a magnetic micro USB adapter plug into the port. Makes charging a breeze.
Hi, I am very interested to know the solution. I plan to order a SP40 and to add a diffusion film under the glass. Not sure if this possible but is it OK to ask Sofirn to losen the bezel for you when you make the order?
@MoreLumens : I may end up to use the adhesive version of the diffusion film. But it’s just more elegant and more weather resistant if the film was placed under the glass. With the condition, of course, that is is humanly possible to unscrew the bezel.
Got it!
Just ran the lamp head under my blow dryer on its top two settings before applying the snap ring pliers to the bezel, loosened it right up.
Oh cool thanks. What are the “top two settings” ?