Think from what i see the ceiling bounced lux figures from HB201, it really is about 2000L OTF, as we've originally guessed. The difference is in the delivery, it can do this for a pretty long time even if it is a threaded drop-in with few threads like the Uniquefire 3900, easily 10 minutes of this output before it gets begins to get pretty warm.
The youtube videos are on CPF, and it seems that the initial drop in output for the TR-J12 is very low due to a high mass drop-in like the TR-3T6. (that thing literally does not dive). As you can see with the Solarforce XM-L it just dives. There is probably something wrong with the XM-L, but you can get decent info from the Trustfire SST-50 as well (take it that it's literally an XM-L @ 2.5A as well)
5th minute, 6.6% drop, that is in-line with the figures from what i got from the Trustfire TR-3T6 and Uniquefire 3900. This is a performer!
The heatsinking seems to be very effective, also it scored higher lux than my 2.5A quad XM-L driving light with same batteries. I'm very impressed by that!
Another long run time multi Xm-l from trustfire like the TR-3T6, might not be thebrightest but for long run times and constant use on high it should be good.
Hehe thanks 2100 was just about to post numbers here, I'd recommend this light because of the good heatsinking. I've seen people saying they want to mod this light but I think if you increase it from 1,5A to 3A on LEDs they'll burn in runtimes over 5min, then you'll need an even bigger body... Correct me if I'm wrong. I did some beamshots in the city but they are not visible on iPhone camera. But I can light up a tall building from ~150m that's pretty damn bright for a handheld device with stable and long runtime at about 90% of initial power after 10min and didn't really continue to drop after that(on high mode). So this flashlight can actually be used for real purposes other than just a 30sec show off.
Yes but as I showed you the light was not cold when starting it was 29C and room temp 25+C. But outside -4C no problem at all with heat, no drop at all in output.
But outside my broken modded fan cooled makita Bml185 outperforms the TJ12, but inside this light last longer on high, also water resistant so it's more useful everywhere :-)
Im awaiting comparison between the Fenix TK70 and this one now! But for ~140-160$ you can buy 2xTJ12 and fix them together and compete with TK70 hehe
Edit: btw the tailcap reading were 2,1A, 1,3A and 0,3A using 3x18650 trustfire 2400mAh(flames) all charged at 4,23V this should be about 27w pulled from driver.
My beamshots are really shitty quality, but perhaps 2100 will have some good photos soon? Anyway a friend of mine is a amature photographer so I'll try get either the camera or her to help me taking some real beamshots with camera and flashlight fixed on tripods and on measured distances etc.
I recieved my 3x 18650s today and I can confirm that they fit as they should, but they'll need some charging time before trying if theres any difference. Btw they fit my cheap 5$ 18650 charger from DX only 1/2 slots though, and they fit 2/2 slots on Ultrafire 188.