Simon Mao, on my flashlight from the last order (convoy s2 + LH351D 5 Amperes), a shunt in the spring from the side of the button fell off, and this happened almost immediately, literally after 2-3 battery replacements. I don’t know how to do soldering and I don’t have a soldering iron!
The question is: what are the consequences?
It is possible that because the internal resistance becomes larger, the low-voltage protection will be entered in advance. I have a switch with a copper spring, which can be sent to you for replacement.
Lumintop 14500 fits perfect in T2 but for me not worth use it because the difference of power with AA it’s very small.
Well, that’s a shame. I have some button top 1000mah Vapcells I was hoping to use with the T2 I just ordered. Might need to look into what is preventing the fit.
On another note, I’m looking forward to my M21C-U XHP70.2 and another simple S2+ with a Dogfart and the new FET driver from the same order.
I wish we had figures for the new XHP35 HI offering in the M21C though, I would have maybe bought another if there were candela ratings available.
this is great news, I will write to you in the store! Many thanks! :+1:
So would it be correct to say that it appears this is a driver issue/inconsistency rather than the LED type the driver is used on?
I've had a few different Convoy lights that use this 12-mode (Biscotti clone, not the original Biscotti) driver, and also noted that for some lights, when doing voltage check:
- on some flashlights, the main LED stays on at a dim mode, while it "blinks (brighter)" out the voltage count
- on some flashlights, the main LED is off, while blinking the voltage count
(for comparison, on the original Biscotti, when doing "voltage check" mode, the main light is Off in between the "blinks" for voltage count)
The issue you mentioned might be related to the observation I noticed (main LED is dim, or main LED is Off in between blinks)
What is the difference between this:
https://www.aliexpress.com/item/1005001866355467.html?spm=2114.12010612.8148356.10.1d01cb45bd8V3X
and this:
https://www.aliexpress.com/item/1005002244951138.html?spm=2114.12010612.8148356.16.1d01cb45bd8V3X
version of M21B with XHP50.2?
OK, first one is 3V LED, but for second one, there is no info.
The first one uses XHP50.2 3V (FET driver), the second one uses XHP50.2 6V (boost driver).
Does this have the alternating frequency strobe as per Biscotti, or a constant frequency strobe?
As of right now if there is a choice of color temp below 5000K for XHP50.2, that means it is 6V.
The 6V will be more efficient because of the boost driver, both drivers will output ~18W (3V * 6A or 6V * 3A). A normal XHP50.2 will be 6A, if it’s 3V it will say so.
@stephenk You may need to contact Simon about the needs of the light painter community.
I had the driver in a light with a single SST-40 and the light remaining on between blinks was present there too. I didn’t play around with the mode groups containing the lowest mode on that light though.
Then I ended up taking the driver out and putting it in a triple with 3 SST-20s and noticed that the lowest mode is almost the same as the next lowest. Another of the same driver in another triple has a much lower first mode.
I have 5 more of these drivers on the slow boat, when they arrive I’ll swap out the suspect one and see if it’s any different.
The Convoy Store now has a listing for a S16 21700 flashlight. Looks like the S12 with a single SST-40 emitter:
https://www.aliexpress.com/item/1005002315391902.html
Yes, dimensions and body design are the same as the S12. it’s 7.5mm shorter and then head is 1mm smaller than the M21B, I’m not really sure that the difference is large enough to warrant a new design unless the M21B’s crenelated bezel is illegal somewhere. Simon is updating his store so often that it’s hard to keep track.
https://www.aliexpress.com/item/1005002320341144.html
What driver is it? Boost? Temperature protection?
I’m pretty sure it’s this:
I believe the driver is the same as in the L21A so it should have thermal stepdown.
I will be honest with you Simon, the only reason why I didn’t buy more T2 until now is because of the driver and the impossibility to change the fact that it has memory, and that I cannot configure the amount of modes in it.
The Convoy T2 is a sturdy and robust flashligh, easy to mod, capable of taking a hard beat, what makes it good for many modders and people that want practical “work” lights.
In case you offer it with drivers with more flexible UIs, I am sure it will sell more!! Your led options are also great 
The T2 should be higher lumens like the Sofirn SP10S which is 650 ANSI. The T2 measured 320.
Higher lumens will always increase sales.
To be honest, i absolutely love the T2 as it is, 4 modes with memory is what most people want. The 12 groups firmware isn’t that user friendly for the average person.
I wish the 12 groups firmware was changed, instead of waiting for 8 blinks to select group 8, it should just do 12 blinks in total, each blink representing each group. Takes way too long to get to group twelve
This is a much nicer solution IMO.
3 or 4 modes with memory that can’t be turned off is boring, it’s what almost every brand does with their AA light.
We aren’t “most people” here. Mode memory is polarizing, I like small lights like that to start from low. I’m not the only one.
The 12 group firmware can be configured to make the memory people,the no memory people, the start at low people, and the start at high people happy. Even the old school high mode only folks.
A programmable AA/14500 light would be rare. And I’d buy one and a few of the drivers if they were available.