Well, he is using a 50E, a 5000mAh 15A cell.
I wouldn’t worry about the XHP50.2 though. It’s 4x XP-G3s in parallel. You’ll have no problem with pushing 20A+ through it.
30A? 32A? Where do the problems begin?
All the tests I’ve seen stop around 12A for the 6v version (peaks about 10A). That’s 24A for 6v. There’s not much more output above 15A for the 3v, but there is a lot more heat. I’d personally stick to that.
A quick blast with a 30T I’m sure would measure higher output, but it also might burn it out. IDK. If I had a spare emitter it might be worth trying.
Not sure if it has been posted here but Matt at Adventure Sport Flashlights is carrying these LED’s. Tint is a 1D (6250k) which is not my favorite. Got 3 for @ $25 shipped usps. Not horrible. Maybe Arrow.com will carry them in the near future which will get the cost down to around $5 each. I will contact them and see if I can get then to carry some.
Are these available anywhere in neutral tint?
I got a 1D from Cutter in a UranusFire C818 that does 19 amps. If all goes well, I should have a triple 2A from KD working today in a Amutorch X9 with a FET+1. For those unfamiliar with it, it's a tiny light for sure, here's a post on the stock light: https://budgetlightforum.com/t/-/54707/29. I'll probably switch from the titanium tube to aluminum for the triple 3V XHP50.2's - anything to help.
Figure the GOLISI cell may be the best in this light to use. Fortunately the clamp meter has a 100 amp range.
I am betting that an LD4A 12A driver would run one of these 3V 50.2’s quite nicely, probably around 3400 lumens or so. Now to get a couple of those from Neven…
Not that I know of, I am also waiting for a 3D or 3A tint before I jump in on them.
JasonWW, I used the FT02 for this swap because of the features of this light. Cost was $10 more than a Convoy L2. Paid $40 with group buy. Easy to mod, 21700 battery, side switch only, large head size, no glue or pressed in driver. Could not find any host with these features. No doubt the FT03 would be better and cheaper but got tired of waiting. The XHP35 had a great beam but only on turbo for 90 seconds. At lower levels had no spill at all. Useless for my purpose. Very happy with this swap. Total cost for the light and all parts was about $65. Many thanks for all your great posts.
Sorry for the lack of understanding. But what would happen if you put 4 of these in a D4? I’m assuming the battery would sag into Oblivion and the output wouldn’t be that much higher? Of course the pads are the wrong format and the domes wouldn’t fit under the optic. But I guess I just want to understand what would happen running 4 of these off one, say, 25S?
Well, since you’d be putting the equivalent of 16x XP-G3s in a single light, you’d pull an absolutely insane amount of current from there, and you’d probably fry everything that couldn’t handle such a massive current draw, if the 18650 could even handle it.
That’s what I was imagining. But I’m confused because then how does the Q8 handle it? Is the driver more beefy in some way?
Yes, and you’ve got 4x 18650s, beefier power traces, much higher thermal mass and thermal dissipation potential.
Makes sense, thanks!
Here’s a similar build (1x18650 on a 4x4 die LED) mine lived but it pulls almost 30A from the battery:
Dale, any thoughts about trying one of these in an EE X6? Do you think the heat would be too much?
Just finished a X9 mod. I posted this is the X9 thread, but repeated here:
It's all done. Can "only" hit about 32 amps off a GOLISI cell. Recorded startup lumens at 10880 (TomE #'s). A black LK cell did 24.6 amps for 8640 lumens @start.
Used this for the reflows, driver and LED's:
Here they are reflowed on the X9 MCPCB:
Driver sandwhich, 20 mm FET+1 by DEL,trimmed slightly:
Checking fit, looks good:
MCPCB isn't perfectly flat but it's close. From flat surface sanding, you can tell pretty good:
Since up'ed the wires from 20 to 18 AWG, added kapton tape just in case:
Here she is, all lit up:
I wired both colored LED's in parallel. USB charging is lost. RED and BLUE - it's a little strange look'n.
Size perspective with other high output flooders, though the others are 3500K and 4000K with high CRI:
I'll have to try a Samsung 25S 18650 - might do little better.
Link to Photobucket album for more detail pics: http://s1054.photobucket.com/user/TomE2012/library/Custom%20Mods/Amutorch%20X9
This was an easy mod for the LED's, since this light came with SST-40's and a stock high performance FET based driver. The pill area though is pretty tight, so I used a good epoxy glue to mount the 20 mm driver on to the stripped stock driver to keep everything low - worked out well. Was hoping for 40+ amps but there's probably just too much restrictions - single 18 AWG wires, had to use 22 AWG spring bypasses because the springs are low profile and batteries fit tight, etc. The MCPCB is fairly thin, think 1.5 mm, but still way too thin for these.
Installed KD 6000k 3v in my XinTD C8 with mtn 17dd driver. Pulls 8.5 amps at tail with Sanyo GA battery. Slightly blue on low, more white on high. Nice beam and hot spot. Love it! Driver spring is Beryllium Copper. Tail cap is bypassed.
should probably check your springs. if they aren’t bypassed you will likely need to change them or add a wire bypass otherwise they will probably heat up and turn to mush after a few turbo sessions.
I was thinking about doing one in an X6, haven’t pulled the plug on it yet and will probably wait for a 12A LD4A to be honest. I think a direct FET+1 in the X6 may well be excessive, not that I haven’t done excessive in the X6 before…
I have 16 XP class emitters + one SST-40 in my Ham’r, a single 18650 Samsung 25S will deliver the second highest amperage I tested at 28A, second only to the 30.3A of a 30T. The Golisi pulled 27A. The single cells still gave pretty exceptional output, with the 25S putting out a little over 14,000 lumens and the 30T making just over 16,000.
That said, 4P 25S cells yield 26,200+ lumens.
(I should point out that I have a mix of Samsung LH351D emitters as well as Cree XP-L HI and HD emitters, with 5 separate FET+1 drivers powering each bank of 4 + the one SST-40. So each MOSFET only powers 4 Samsungs or 4 Cree’s and then the Master powers the SST-40 by itself. This is quite a different set-up from having one FET control all 16+1 emitters)