may be, S21F driver simply produce ~5-6A in max. “100%” mode for 2 led’s and ~4A for 4 led’s ?
Can you measure tailcap current’s with fresh charged battery ?
Assuming I did it correctly (take off cap and lead on battery and lead on exposed tube end), the currents are:
- ~5 A at the 2 extreme CCT’s with seemingly only 2 LED’s lit.
- ~4.2 A in between with 4 LED’s.
I’m impressed; you hit it on the nose. :+1: 
Please explain how you were able to predict correctly? Why only 4A with 4 LED’s when it’s an 8A buck driver? TIA
I kept thinking two would stay at full power 5A, while the other 2 are slowly added in until the mid point, say 1A then 2A then at midpoint 4A each pair, total of 8A.
When flashlight is on:
One click then hold for ramping output (lumen)
Two clicks then hold for ramping tint
The tint ramping is stepless. If I like to go to a specific CCT, I look at Opple while changing tint. Otherwise you could shine at white wall and see beam color change.
Got it…thanks for the clarification! :+1:
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You’re welcome. And welcome to this Nichia heaven lol.
At either end of S21F tint, there are one pair each of 5000k LEDs and 2600k LEDs with great tint. Duv minus 0.0066 and minus 0.0010 at either end, causing all middle CCT’s to stay in negative territory if the theory holds. Owners, don’t sell your S21F! I think Simon has made sure he has the best bins for this intro batch because he knows we are going to dissect his light.
What’s so funny is I’ve been complaining about wanting to get 519a 5000k and this is not it, and turns out this is exactly it! The CCT measures 5000k and not the spec 5700k.
19*
I simply calculated it in mind, with some correction for led efficiency.
I think, it’s design features of new driver.
~5A full power with current regulation for 1 channel (2 led’s),
and slightly less for 2 channel’s - may be, regulation between channel’s realized with high-frequency PWM.
(You can check PWM with Opple Light Master.)
For my taste, 5000K on “cold end” is better, than 5700.
So is the LED a 5700k only outputting 5000k or a 5000k LED?
How come Simon put 5700k?
TIR optics and lower current/emitter tend to reduce the CCT. It may also be a bin at the lower end of the 5700k range.
In my S21D and S21E, the 5700k is in the 5200-5500k range.
Ah I see … … thoughts on mixing domed emitters with de-domed emitters?
Is it normal for the side switch to make the click noise but not engage? I may have a faulty switch cuz I have to press firm & hard to activate it 
It does that, in one of my Convoy lights more so than others. You just have to make sure the finger press is right in the middle and straight down, not at an angle. I don’t complain more because of the 30 buck cost and I don’t want to be too whiny lol, but yes IMvHO it’s not the best button and I hope more people would complain to Simon about it.
The other maddening thing is that unlike Anduril, where for example 2 clicks is a decently slow 2 click, with a little time between clicks allowed, Convoy’s multi clicks require you to click very quickly in succession like an angry maniac :person_facepalming: :rage: and make the bad button even more difficult to use. At least for me. For old people with arthritic hands, I would imagine it’s an issue.
The problem is if you return this light, he would have to give you a refund and the next S21F light might not be the same. If it comes at all. See my next post.
I have the greatest of news this morning: S21F has a Turbo mode. First time I’ve seen in any of my Convoys and took me completely by surprise. I was taking beamshots at 5:30 this morning (what else is new I need darkness right?) and only discovered it accidentally. Turned out I need to RTFM 
; it’s in there.
Measurements for the surprised Turbo mode:
Output is a sizzling 2000 lm (To put it in perspective, my S21D 219b 4500k and 519a 4500k only measures 1700 lm. S21F hence has highest output of any of my D4V2 and Convoy Nichia lights.)
Duv equally sizzling –0.0071 (Duv in the 70’s is slowly approaching the Duv king 219b 4500k, which runs in the 80 to 100.)
CCT 3500k (very close to the CCT that it came with from factory)
No PWM (I think yes at lower output but will discuss this later.)
My main misgiving about this light was the low output so this Turbo mode rights all the wrong. My favorite setting is 5000k start, and double click to see the unique beauty of a 3500k beam. The lucky first 19 owners: hold on to this gem lol.
Thanks for the clarification! Yeah I don’t mind the device as is at I was more worried about the switch being faulty since this is such an awesome light!
So stepped mode still has 4 brightness levels plus an even brighter Turbo?
Somebody posted the S21F has the same UI as the M21F. If so, then the available STEPPED mode intensities are 1, 10, 35% and 100. The 0.1 aka moonlight isn’t part of the stepping sequence. It is accessed independently from OFF with a long push, then exited by turning the light off again.
So to answer your exact question, stepped mode has 4 intensities.
In ramping mode, the intensities are essentially infinite between (I think) 1% (not 0.1) and 100.
For me, Turbo has more output vs light at 100%
. In what light? And how can any intensity be more than 100? Would that be like the famous 110% effort? or very unique?
sorry, it’s very confusing. I assumed “turbo” meant that 100% can be accessed directly from OFF.
Turbo is defined as 162% of the maximum output :+1:
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