as werner points out, if it were 15 in parallel you’d need what? 45a? I just dont see that, as 18sixfifty says, its definitely series/parallel, but if its direct drive on high, it’ll pull much more than 3a/emitter string. This is starting to give me a headache, I’m going to end up going getting a note pad and pen to doodle on if I carry on.
I am thinking now that it probably is direct drive on high and that’s why it had crap weak assed wiring to start with, it naturally limited the current to an acceptable level, rather than build a boost driver that could go 16v in 45v out lol
hell, even asking for a 15a buck driver is pushing whats available, never mind the poor 1.5a omten clicky at the dark end, I guess we are at the limit of whats feasible in a portable aluminium tube at this point.
When I first re-wired it and popped in on high with the king kongs in it, I turned it right back off thinking I was going to fry the emitters. But I did it again and left it on and it was great. I took it for a few walks and it’s a beast. That was with 4 ICR’s they didn’t get hot either. The light did but only if I left it on high for a long time. On medium it’s still a ton of light and really ran nice. I did notice at the end of one long walk that it didn’t seem as bright as when I left. That also made me think it was direct drive.
Oh and it runs on two cells about half as bright if that of what it does with four.
So i just played a bit with my multiemmitter light(3S3P XML just a fet as a driver with pwm on high) and it lights up a bit on 2 cells as well but very dim some hundred lumen maybe.
Of course I have tested it with 4 cells…it was on moderate 7.8A tailcap as I added a xtar 18650…multimeter showed short 11A light was insanely bright…zero. All is fine just the protection of the xtar kicked in…
So if it is direct drive and 3s5p than it will suck a lot of current, and I truely belief that reducing resistance helped a lot as with 10A a resistance of 0.1ohm steals a whole volt… and of course it should be bright like the sun.
10A discharge curve is not so promising…more like crap…so here we are there is no protected cell which handles 10A and more without having bad points. That’s because high drain cells have no protection, what makes sense for most cases but not in multiemitter lights with series cells(is it called series or serial?)
Almost Enerpower prices for poor performance. I’d say that so far, Enerpower and adding a circuit if at all possible are the best bets so far for protection in 26650 8A+ output.
18sixfifty can you please make one little review or post some pictures of the inside of your 15 xm-l flashlight? no way to find pictures of this flashlight anywhere
it have good heat transmission? how many mm of thickness aluminum under the leds? 2 x26650 fit?
I have the other 15x model, its very much like my 12x, and I THOUGHT it was good heatsinking as well, however now I’m finding that although the heat does not travel through the fins to the tube much, the head does get very hot after a while. While you still can run it on high for a good amount of time (I’ve run my 12x for an hour and it did get very hot) this new light above looks better for the heat problem.
