【convoy】convoy S12 / M21B / M4U

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Barkuti
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Concerning “the High and the Turbo mode practically have the same brightness” from RelakS, it happens the same with the H1-A driver from CDM between mid and high modes (actual mode stepping: ≈0.4% - 10% - 33.3̅% - 100%). It sort of serves as a low battery indicator.

Phlogiston
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My Convoy L4 does that – high mode slowly drops as the cells deplete, until it’s the same as medium mode. Just the way that type of driver works. I normally use it on medium, so it’s fine for me.

Barkuti
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I rarely (if ever) fully charge my cells, so that Convoy driver behaviour is not really of my liking. The H1-A only lessens its high mode when cell voltage is really low (as described in Jensen567's Buck and Boost Drivers, Testing, Modding, and Discussion). 

Tangra
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Does Simon offer Convoy S2+ with TIR optic mounted by him?

RelakS
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So, if I put some driver between the flashlight and the batteries, which can provide constant 4.1-ish V, this behaviour disappears Big Smile
I am thinking in some buck converter of course. The problem is the about 6A current Steve

Niko
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Simon when will be available xhp35 driver with tact switch?

Simon Mao
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Niko wrote:
Simon when will be available xhp35 driver with tact switch?

xhp35 hi driver

Niko
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Not have side (tactile) switch

oweban
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Do you mean e-switch?

Niko
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Or e-switch

kotobuki
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My Convoy S12 and M21B from Banggood arrived yesterday. Both of them worked well with 18650 battery size.
Only S12’s tube can fit with 27100 battery, M21B’s tube is smaller 27100 size!
Does anyone have same problem?
I attached here some pictures:

BurningPlayd0h
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My M21B works with Samsung 40Ts, an Aspire 21700, and a protected, button-top Wuben 21700 that measures ~21.5mm.

What cells are you trying to use?

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BurningPlayd0h wrote:
What cells are you trying to use?

kotobuki wrote:
Only S12’s tube can fit with 27100 battery, M21B’s tube is smaller 27100 size!

I think he is trying to use some very fat cells… Big Smile Glad you were able to press it into S12 Party

Uch sorry, I just have to Facepalm

E.g Liitokala Lii-40A won’t fit.
I think it would be able to fit it without this plastic yellow wrapping, but I just can’t unwrap it…this yellow looks so nice.
Same problem with Jetbeam PC20, won’t fit this Lii-40A

And Simon said it will be fixed in next batch and will fit all 21700 cells like S12 (if I remember correctly)

contactcr
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I dont recommend this but if it’s that close you could probably take the head and tail cap off and slide it in just the tube then thread both ends on

kotobuki
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Quote:
Morcany wrote: … E.g Liitokala Lii-40A won’t fit. I think it would be able to fit it without this plastic yellow wrapping, but I just can’t unwrap it…this yellow looks so nice.

Yes, you’re right.
I’m using Lii-40A battery for my testing. I have that kind of battery only! Facepalm

Mocarny
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contactcr wrote:
I dont recommend this but if it’s that close you could probably take the head and tail cap off and slide it in just the tube then thread both ends on

You mean using a hammer to jammed it into? It could work with Jetbeam PC20, this Lii-40A could be pressed by using a lot of force, but it seems the M21B is 0,1mm thinner and Lii-40A will not fit even a little bit.

When measuring thickness of this yellow wrapping, it is 0,1mm, so both sides are 0,2mm and without it a cell has 21,5mm, so…I guess it could bre pressed… I guess…

Someone here mentioned new yellow Liitokala 5000mAh has 21,3mm, so more capacity and will fit Wink

contactcr
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I only say that because some times tight fitting batteries are hard to insert because there is no way for air to escape the tube. They create a nice seal and feel stuck

Barkuti
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Excessively tight fitting battery tubes is a manufacturer's blunder. Some “21” cells may be slightly thicker, and the same happens with certain “26” cells (the overall best 26650s are in fact the thickest at ∅26.7mm).

Nothing to gain with excessively tight fitting battery tubes except unsatisfied customers. 

fluke
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Yokiamy wrote:
oweban wrote:
Yokiamy wrote:
oweban wrote:
I’ve only got the S11 XHP50.2 driver, but I’m happy to desolder the inductor to show people what it looks like, in case it helps.
Not necessary, posting detailed (macro) photos will do. Removing the blueish foamy thing, might help though.
Here we go – not the best macro shots in the world, but a quick one while I have a few moment being left alone ;P I know it’s not the M3 driver, and they actually look quite a bit different, so it’s probably useless for what you’re after. https://imgur.com/a/0cqCG4U
my guess would be this one can you try to measure resistance? also, try to measure with different temperatures,to verify. !{width:66%}https://i.imgur.com/6eCZiQg.png!

 


Do I just remove the NTC or remove and bridge NTC?
Barkuti
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fluke, if it's an NTC just remove it.

fluke
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Thank you.

fluke
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Need a bit more help.

The Convoy M3 driver has the NTC on the spring side of the driver.

Looks the same as the earlier photos in this thread.

 

But I need help, what is this blue square sticky foam type stuff on the board in this  below link - shot?

https://www.aliexpress.com/item/33021024834.html?spm=a2g0z.12010612.8148...

BlueSwordM
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@fluke, that is a thermal pad.

It is important that you keep it on there for optimal thermal performance, or even replace one that’s even better.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

fluke
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BlueSwordM wrote:
@fluke, that is a thermal pad. It is important that you keep it on there for optimal thermal performance, or even replace one that’s even better.

Hi thanks.
I assumed that was what it was.

I have some on order to replace it, typical de soldered the driver and the NTC was on the spring side, thermal pad thing took a battering.

Barkuti
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fluke wrote:

But I need help, what is this blue square sticky foam type stuff on the board in this  below link - shot?

https://www.aliexpress.com/item/33021024834.html

 

That thermal pad, in itself, can't do much to cool down the boost integrated circuit, or does it? 

Yokiamy
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Barkuti wrote:

fluke wrote:

But I need help, what is this blue square sticky foam type stuff on the board in this  below link – shot?


https://www.aliexpress.com/item/33021024834.html




 


That thermal pad, in itself, can’t do much to cool down the boost integrated circuit, or does it? 

Please refer to this thread

http://budgetlightforum.com/comment/1551077#comment-1551077

  BLF

Agro
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I see that a Rofis Store on Ali offers an AAA flashlight that they say is from Convoy.
It is SS and somewhat resembles the Convoy Ti prototypes, especially wrt overall shape and size. Actually looks better to me.

https://www.aliexpress.com/item/32811288894.html

Is that actually a Convoy?
I thought there were issues with the driver?

highzlik
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It is. You can found it also in Simon’s shop.
https://s.click.aliexpress.com/e/FxxmEd5I

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Thanks for the info. The price is much better. Smile
Untracked link:
https://www.aliexpress.com/item/32730506517.html

Now it opens a number of questions. Smile

  • Will there be a Titanium variant?
  • Diameter?
  • Does it accept 10440?
  • Will it be available as a host?
  • What is the driver diameter?
  • Will the driver be sold separately?

Yokiamy
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Agro wrote:
Thanks for the info. The price is much better. Smile
Untracked link:
https://www.aliexpress.com/item/32730506517.html

Now it opens a number of questions. Smile

  • Will there be a Titanium variant?
  • Diameter?
  • Does it accept 10440?
  • Will it be available as a host?
  • What is the driver diameter?
  • Will the driver be sold separately?

I don’t think so, the light is on Simon’s Convoy store for over 2,5 years, i have never seen replacement parts for that particular light, but you can always ask Simon.

  BLF

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