18350/16340 version Convoy S2+

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Penny wise but ...
Penny wise but Lumen foolish's picture
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18350/16340 version Convoy S2+

Buying one of these off AliExpress with an XML2 U2-1A led

 

https://m.aliexpress.com/item/32221134204.html?spm=a2g0n.orderlist-amp.item.32221134204&aff_trace_key=94da5631b9204f4d93e814264fb40790-1610608271386-05968-UneMJZVf&aff_platform=msite&m_page_id=3423amp-qkk1DGDbITICm0elkNf1cA1611415887952&browser_id=d81eef2d53074841ba2cb76743494d26&is_c=N

 

They offer driver options, and I was wondering if anyone knew what the approximate lumen output of these different options would end up being using an 18350 battery?

 

7135*3 output current 1050mA
7135*4 output current 1400mA
7135*6 output current 2100mA
7135*8 output current 2800mA

 

Am I correct in assuming that the 2800ma output would be close to 1600 lumens similar to other S2+ ? And the 1400ma output would be roughly half of that around 800 lumens?

Henk4U2
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First question is (always): for what purpose do you need a flashlight?

Pro: a 18350 Convoy S2+ is a nice light to carry around in the pockets of your pants or jack.
It is a nice light to have if you work indoors or under the bonnet of a car. For a short period.
I have a few of them, ideal for illuminating the road between your tent and the showers.

Con: a 18650 battery is 35mm longer and has typical 3.0 -3.5 times the capacity (eg stamina).
Don’t expect a lot of throw, that’s a result of the type of reflector, small, short and orange peel.
The same led – driver combo in a C8+ has a lot more throw. And output.

As for the output, I would like to refer you to the website of Fasttech,
And do keep in mind I seriously think they present way too much lumens (manufacturer ratings)
Their (ballpark) ratings are: 1.400 mA=600lm, 2.100mA=800lm and 2.800mA=1.000lm.
The last one can get quite uncomfortable to hold after just a few minutes.
Unless you put in another led – driver combo (and wear oven mittens) 1.600lm is out of the question.
To put it bluntly: it will melt down it’s own guts

You are a flashaholic if you are forced to come out of the closet, to make room for more flashlights.

texas shooter
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Cree charts show the XML2 U2-1A led puts out 1067 lumens at 90% efficient glass and electronics running 2800 ma. 624 lumens for 1400 ma.

Penny wise but ...
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I have several lights, to cover all my "needs" so I can't honestly say I need the 18350 version,  I just want it as a small pocket budget edc lol. 

 

Thanks for sharing the Fasttech info, thats exactly what I was looking for ! The 1400ma version around 600lm sounds perfect for my purpose. 

 

Thanks again!

Henk4U2
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You are welcome. Bonus point: drivers with 6*7135 and 8*7135 are usually soldered into the pill. Smaller ones have a retaining ring. So you can swap those easily without making a mess.

You are a flashaholic if you are forced to come out of the closet, to make room for more flashlights.

MascaratumB
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Henk4U2 wrote:
You are welcome. Bonus point: drivers with 6*7135 and 8*7135 are usually soldered into the pill. Smaller ones have a retaining ring. So you can swap those easily without making a mess.

kiriba-ru sells some special rings for those pills, that can be used with drivers and 6 / 8*7135 chips:
https://budgetlightforum.com/node/45343

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ChrisGarrett
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I’ve got 3 S2+ lights, two with the short tube and one being an XP-L triple with LD-2 6A driver and they’re pretty neat lights.

Got my gal a purple one, since she loves the color purple.

Everyone should have a least one S2+ and if you buy one, you should get the short tube and a generic clip.

Chris