So i bought this convoy s2 plus at banggood. I used green 18650b from the 10000mah xiaomi powerbank that i disassembled. Fired up the light, does not feel like
1000 lumens. I measured current using a cheap multimeter but only got about 1.1 amps.
Could the battery cause the low output? ( xiaomi rates the batteries at 3350 mah so should handle the 2.8a current)
Could i have the 4x7135 version? though i should have at least 1400 mah for that version. ( i chose the 8x7135 before check out )
Could my meter post wrong readings?
(for reference, my 220 lumen m3r has a reading of 700ma)
I can’t see any pics (probably being blocked by my workplace) but if it’s the 8x 7135 driver, you would see 4 of the chips on the spring-side of the driver. Do you see these? If not, then there’s a chance that you did get the 4x option. But 4x chips should get you 1.4A. Three chips would get you just over 1 Amp…
Don't see any difference in brightness. As a reference, i measured 700ma for my 220 lumen led lenser m3r which sounds close enough. I have another convoy s2+, will check that out later if it gives the same reading.
This is correct. Simon chose to set the standard “default” version to 7135*3 for the green S2+. The previous versions were 7135*4 by default and the option to change the number of 7135 chips is cheap but you have to send Simon (Convoy) a message and have him adjust the price if you want to change the emitter tint or number of 7135s to your liking. He charges very little to do this. He’ll also tune the modes if you want for free. I haven’t seen the Banggood listing but Simon states this all clearly on his Convoy Aliexpress store.
Can you tell us what color S2+ you bought? Sounds silly I know but the new green S2+ is the only one I know of that ships standard with 7135*3. The others all come standard with at least 4 unless you specifically order a lower powered light.
Sorry if i can't give you complete details now. (still at work). Will upload later pics of the light, beamshot comparison to my other lights, and readings using thick wire gauges. I believe this convoy is real due to good springs and led and also never heard of a fake convoy from banggood.
but that was six months ago. More info in that thread. Not saying that you got a fake, seems more likely it’s a bad solder join inside there, is my guess.
A fake convoy is of no concern here. A flashlight is just an aluminum tube. This problem is electrical. Something is limiting the current. Driver- wires - Led.
Improperly soldered LED or AMC chips? That would mean four or five chips aren’t soldered correctly, so I’d start by putting my odds on a poorly soldered LED, which is not uncommon. Is it on an aluminum star? Is there any thermal grease?
Let’s not forget the switch. It could be faulty.
So i tried my second convoy, bummer, won't turn on. Tried the other tailcap and it now turns on. So the second convoy has a broken tailcap. Tried opening it but my tweezers broke :(
Was able to open the pill but the board was soldered so cannot see the other side if the board.
For the tailcap measurement i get more or less 1.1 amp on both lights so both of them should
Be similar, tried another panasonic(from xiaomi powerbank) and still got similar reading. I tried using a thicker wire (don't know the gauge but about .3mm thick, reading imrpoved to 1.3 amp . Dont have a thicker wire now but will try it on weekend. I will also need a soldering iron to confirm the board really has 8x7135
Will post beamshot comparing it to my led lenser m3r
Do keep in mind that the retainer ring in the tailcap of a Convoy S2+ has a reverse thread. So if you try to loosen it by turning it in the anti-clockwise direction, you are actually tighten it even more.