Look at the pictures on his website and compare the PCB Color and the components on the PCB:
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I looked closer and one has B35AM and the 3V buck is labelled, so by power of elimination I can figure the others out! 
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@Simon_Mao Thank you for adding the samsung 50S2 to the battery selection. It is an incredible battery at an incredible price. The problem is, now there are too many batteries to choose from. I was wondering if you could remove/not restock the EVE 50E, molicel p42a and p45b once the stock runs out. These cells have all been replaced by betters cells which you offer, making them obsolete.
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Can you, please, give some links to this battery’s specs?
Google seems to know nothing about it. Or is it just a new revision of the 50S ?
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The 50S2? Well, it seems to have been out for a while. Search for «Samsung 50S2 Mooch» and you will find a test of the battery. It seems as it’s the news revision of the battery, so yes.
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Thank you. So it’s “just” a 50S.
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Acebeam uses 7075 aluminum…it’s stronger and tougher than 6061
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Do you know if it would be resonable for Convoy to implement (concidering costs and availability)?
I think the main cost saving measure that Simon’s lights use are cheaper aluminum and anodizing, if he were to switch to 7075 T6 aluminum the price would jump significantly, just look at how much more the TiCu T3 is than the regular T3.
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Both Titanium and Copper are way more expensive than 7071, and most importantly much more difficult to machine. 7071 is pretty easy to machine, titanium is a bitch as far as I am aware and copper is even more so.
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No i don’t think he would do that ever. Logistically it’s more expensive. It would make the flashlights very expensive. In reality, unless your flashlights are ‘hard use’ like for actual work where they’re banged around or need to be as small and light as possible, the difference is inconsequential.
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The question is: To achieve what?
As far as I have read it, it is used because they have thinner walls and need to make up for that with a more stable material.
Convoy doesn’t have that problem, so why implement something more expensive when the current material is perfectly fit for the job? It’s not like the lights shatter in a thousand pieces when you drop them.
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Just had my 6th L21B SBT90.2 driver fail, same component every time. Another member reported the same component failing on theirs. Kind of losing faith in Convoy’s reliability.
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It is 5A 40V Schottky Diode. Have no idea what is for . Anyway, it is 2$ driver right 
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Yeah, but not a good look as a flashlight retailer and having multiples fail.
Others have mentioned it’s for reverse polarity protection, so no clue why it’s failing.
It does not look like RPP. Anyway, 5A input diode is not enough for 12A output
The SBT90 is drawing 22A. Would be interesting to know what it’s for.
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Based on placement (I’ve looked at this driver before) it seems to be freewheeling - my guess is the inductance of the wires at the output, together with the fast high current PWM, generates sufficient voltage spikes that it needs some sort of freewheeling. Sounds weird to me, but the fact that it explodes seems to agree with the fact that it’s needed (and in fact even undersized).
I will get one of these drivers today, and can try to figure out what it does and why.
I wonder if thicker wires from driver ro MCPCB would keep this from happening.
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Have you tried simply removing this diode, not adding anything in its place, and seeing if it still works? I’d be curious about that. It would probably fry the FET then, though, or - worst case - the LED.
Edit: yup looks like it’s placed to protect the LED from reverse voltage, not the FET. Better not try without unless you’re fine with risking a SBT90.2 then.
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