How hot does an S2+ get at 2.75A? Comparing an anodised Convoy S2+ with a fluorescent yellow powdercoated Convoy S2+

Nicely done!

Since dark colours are supposed to shed heat better than light colours, I wonder how the tests would look if the powder coating was the same colour as the anodized light.

Thanks.
Pipe bomb alert status dismissed

Cool, thanks :+1:

A well-executed test, and a very useful one to boot. Thanks for doing all that work, djozz, and thanks to James at 3Tronics for providing the powder-coated sample :+1:

Personally, I’m unlikely to buy a powder-coated light, but it was fascinating to see how these unusual materials perform. In addition to that, the anodised light results are directly relevant to anyone who owns an S2+. They even offer us an insight into what any similar 18650 tube light design should be able to withstand.

I have three stock S2+ lights and several S2+ hosts floating around, so it’s very nice to know that even 8x7135 configurations can withstand continuous operation at full power. It’s a bad idea to actually do it, given the likelihood of personal injury, but it means that the Convoy S2+ has a substantial operating margin at lower levels, which should imply excellent reliability in normal use. I find that very impressive.

Most importantly, I’m delighted to see James at 3Tronics vindicated on the safety front. The custom Convoy X3 he built for me has been my most-used outdoor light for a full year now, so I can assure you that he does excellent work.

Great test once again Jos! Any chance you’d be interested in repeating it with successively fewer chips to see where equilibrium settles and time to get there. It would be of use in choosing turbo time out settings.

a stock light with aluminum star will fail miserably at those body temperatures

I think the DTP star keeps the LED within safe die temperatures, maybe not getting close to 50000h lifetime, but we can live with a couple thousand hours

Thanks for the test. I found what was going on in the other thread to be quite ridiculous.

Oh I second this. It would be great to know for say 6x7135 and 4x7135. The S2+ with all its variations has become like the standard for 18650 tube lights. A reference for thermal behaviour would be extremely useful. I don’t want to give somebody a light that gets to >80°.

Great test, djozz!

Thanks for this very informative post and for sacrificing two nice lights in the name of science. Also, thanks to James for providing that light. :+1:

Thank you djozz for all the time and effort you put into this testing. Great job! And thank you to James for providing the sample.Really like the yellow.

Thanks to djozz for running this test! Confirmed I picked the right man for the job, A lot of time and effort went into this!
Thanks Jos!

thank you for the test

Thanks for the comments all of you. Since I have these ruined lights now, I may as well do a few more tests with them when time allows that.

Well, as much as she understands that a man needs a hobby, ok, let’s just say that my six year old son a least found the tests very enjoyable to watch. :wink:

Very nice!
And I bet you will find good uses in future testing for those tortured lights :wink:

I’d be curious how well the finish would hold up ? I’d buy one. Thanks for the comparison.

Video of paint vs anodising vs powdercoating

Thanks djozz.

Thanks for that….3Tronic

interesting test. About what I would have expected given the results for automotive parts with about the same results (aka, powder coating doesn’t have a large effect on temperature transfer. Now ceramic coating on the other hand is a whole other ballgame).

I have to say, that yallow light is really not bad, I could see several uses for it.

Captured on film for the first time ever, the dreaded Li-ion Tape Worm. This illusive creature has been the bane of electronics consumers the world over.

On a serious note, Thank you djozz for yet another hobby changing, well designed test and report.