【convoy】H4 and B35AM options are updated

Simon has already told us that he’s planning a 3x21700 SBT90.2 version of the 4x18a. I suspect the L21a and/or L6 might get it eventually as well, since many will ask for it.


I do have a request for product improvement. I have two of the latest versions of the M2, and while they are great in so many ways, there are a few things I’d love to see in the future…

Supply ’pan head’ screws in place of the flat head type for clamping the mcpcb. The original setup forced the LED off center when tightened down and made it impossible to get a good beam. I swapped in some pan head screws and was finally able to clamp the board and have it centered at the same time.

Also, I’d love to see a forward clicky switch and maybe a rubber tactical grip ring for the light. The lack of knurling really makes it a slippery light, especially when combined with the deeply recessed switch that forces your thumb to bend tightly. I might be a minority here but I love the sharp knurling on the C8+ and would like to see more of it, as well as forward clicky options in these larger thrower/tactical lights. Maybe we get an M2+ ? :innocent:

Alibaba link: https://www.alibaba.com/product-detail/pure-alloy-silver-aluminium-triangle-tube_60682211798.html

From Anshan Zhongjda Industry Co., Ltd.

Can the C8+ with 2700k SST-20 handle the 4.8 amp driver on some of the hotter models? My current one has a 2.8 amp driver and I was wondering if a driver change would make much difference in light or just heat.


The SST20 continues to increase in output until it dies (permanently) around 6.8A.

2.8A is a nice High mode. 4.8 sounds like a perfect ‘Turbo’ imho.

I just tested a 3000K version the other day. Made some graphs for you. Cheers

Thanks very much for the graphs, I’ll give this some consideration.

I guess the next question is which one to use? I have not done this before and could use a little guidance.


You can also check the SST-20 reviews done by the forum testers, captainkirk: Test of a Luminus SST-20-W 3000K 95CRI led (djozz), Luminus SST-20-W 4000 K CRI95 color and output test (maukka) and Luminus SST-20-W 6500 K CRI70 color and output test (maukka); with peaks at ≈6.15A, ≈6.8A and ≈6.7A, and dieing soon after these figures in every test but the 6500K one as maukka didn't want to kill such emitter.

So yes, up to 5A can be considered a great turbo mode. In any case, due to the high emitter Vf achieving such current with a linear or even plain MOSFET driver will only be possible under optimal conditions (high battery voltage, low component resistances and etc.).

P.S.: this or that, these are max 5A linear drivers.

Thanks very much for the advice, I may order two just in case I fumble…


I wonder which of Convoy’s flashlights now use “button” on the head (driver) side instead of “spring”.

I have the S21B with SST40 and S21B with CULPM1 (6Amp driver), both use a spring on the head/driver side.

I have the Convoy L21A with XHP35-Hi, and it uses a spring on the head/driver side.
But on the Convoy L21A with CULPM1, it uses a button on the head/driver side.

i dont have suitable reflector , and the driver is thick

SBT90.2 will be installed in L6, 4X18A, 3X21A,
but Currently the drivers are still under design

This needs to be redesigned, maybe I need to set up a series of tactical flashlights.


I would love to see a forward click option for all S21 and M21 series lights.

Do these flashlights use the standard omten switch or maybe the square one?

I suppose it got confusing whether people like reverse or forward clicky…

The earlier batches of Convoy M21A (SST40) and Convoy S11 (XHP50.2) used a forward-clicky tailswitch (I still have these 2 models with forward-clicky version).
I have since then tried another Convoy S11 (SST40) and this S11 now uses a reverse-clicky tailswitch. (I could interchange the tailswitch of the other S11 to make one forward-clicky or reverse-clicky type.)

I’d like to change my M21A (SST40) from forward-clicky to reverse-clicky, but am not sure if it’s available (the reverse-clicky tailswitch that fits the M21A).
I suppose I’m more used to using reverse-clicky type tailswitch flashlights.

Can you share a photo of forward clicky switches of M21A & S11?

For multi-mode lights, reverse switch makes more sense. And for 95%+ of people it does as well. I understand why it’s the standard. There is however a distinct market and application for forward switches…

Ideally,a forward “tactical” switch should have a secondary method to change modes. Either with head twists or an e switch that only functions as mode switching.

Convoy used to make the L4, which is a form factor very close to what I desire.

If the grip ring was removed from the tailcap and offered as a removable rubber version, and it had a more ‘proud’ tail switch, then the rest is mostly cosmetic preferences.

On that point, less is more, and I rreaally miss the styling of old eagletac, nitecore, 4sevens, and even fenix (original tk11) tactical lights. Sleek, aggressive, attractive, and functional.

Lastly, if a 32mm - 44mm - 60mm head diameter series with deep, quality reflectors and thin bezels (maximizing reflector area per head diameter — like the C8 and M2 exceed at (m21c not so much)) and taking cues from Amutorch designs that keep overall length in check, we could have a winner in my book.

Problem is, you make the bezel too thin (especially Al and not SS), and any good solid bang can bust the glass and ruin the thread. A thicker bezel, especially made of SS, makes the front end of the light almost a hammer-head in ruggedness.

Even in a padded case, I accidentally dropped my camera maybe 2’ (if that) onto the sidewalk, and the oblique-angle hit just the right way not only shattered the clear (“UV”) protective filter, but also bent the flange enough that I can’t even get off the outer ring from the filter.

Well, so much for padded cases…

In a flashlight, if you want it to be “tactical”, you need to be able to crack open someone’s melon with a good hit. So you don’t also want to bust the front glass and bend the bezel, etc.

There are clearly limits to thinness and the tradeoff with ruggedness. I think the m2 has it right though. I think thinner would be an issue but don’t see much practical advantage going much thicker. If you have to chisel your way out of a jail cell then maybe you have bigger problems anyway. I’m personally not willing to experiment with my sample, but I bet the impact would have to be quite severe to render it inoperable.