Fixed, my invoice for the hosting went to spam this month it seems and I missed it lol.
Does exist 3V XHP70 led?
okok seee…thanks:((
If i understand it good,one cell like 21700 can not run xhp70…You need the buck driver for that…Iam right?Thanks for correction…
No, a Buck driver is for when you have too high a voltage for the led. It will reduce the voltage.
To run a 6v or 12v led from a 3.7v nominal battery you need a Boost driver.
Keep in mind that in order for it to double the voltage, it pulls double the amperage. So a 6v boost driver that delivers 5 amps to the led, will need to pull 10-11 amps from a single liion battery. This is about the most powerful boost driver you will see. Some might pull 12A or 13A at most from the single battery. So the typical 6v boost driver will only do 4 to 5 amps to the led. Don’t expect any higher than that.
They also tend to work best with high drain batteries that can deliver a lot of amps.
hm…does exist worldwide small driver WITH USB….ready to run this led on max? I wanted reflow it in lights like astrolux st01 or so….this dimensions…
No. Theres too many variables. A USB port would need to line up perfectly with the hole machined in the head. The driver also needs to have the correct indexing to match the machining. Plus be the correct diameter. Plus have the correct switch distance.
Here is the boost driver from the sofirn sp33 v2. See how the switch has to match the hight and distance to work with the button? Also notice the unique 2 board design. This does not have a USB port, but it would also have to match the vertical or horizontal orientation and location on the body. There are way too many variables. Drivers like this have to be designed to fit a specific light body.
Sometimes the USB port is mounted on a secondary board like this.
These are the only decent boost drivers I know of and are not designed for a side switch, only tail switch. Options are very limited…
I can’t find any driver pics of the ST01, but it might have a separate switch. If so, you might could fit a FET driver in it and a 3v XHP50.2. If the switch is built onto the driver (similar to the above picture) then it would not work. Plus you would not have any USB recharging.
The best thing to do is find a light already built the way you want.
I believe the output of a FET driven 3v 50.2 is the same or higher than a boost driven 70.2. The big difference is the 50.2 will have a smaller hot spot and more distance assuming the reflector diameter is the same.
I see the ST01 is also available with a 3v 50.2 and rated at 3500 lm. That is the same output or slightly higher than you would get with a boost driver and 70.2. So you will not be able to get a 70.2 any brighter.
Assuming they are using a FET driver design, you could probably mod the stock ST01 with thicker led wires, spring bypasses and maybe a higher quality FET to boost the output even higher. Plus keep the USB charging. That is the logical choice.
There's a decent new Chinese LED that's 3V, can take a ton of amps, and has more output/lumens than a XHP70.2 or XHP70.3, the SFH55, here: https://budgetlightforum.com/t/-/67698.
I may be the only one in the world that has one and publicly posting about it (from Neal).
Info/pics starting here: https://budgetlightforum.com/t/-/67698/49
Basic #'s: on one 30T at 4.14V: 32.8 amps. Lumens at turn on: 9605
There's nothing new or special as far as amps->lumens goes, but it all can be done by one large LED and at 3V. Same mount size as a SBT90.2 so they can share the same MCPCB, which is also the same pads/mount as a MT-G2.
Wow, thats a giant led, 16 cores all in parallel it seems.
What tints does it come in? Any high CRI versions?
Yes, it's huge! I broke out my tests/pics, etc. of the SFH55 into it's own thread, little more info now: https://budgetlightforum.com/t/-/68566
Dunno where to even buy this LED. Neal send me one with absolutely no info, not even the part #. We speculated it's identity from a chart in Chinese Nightwatch was using, and doubt the info in the chart is accurate anyway,
I doubt other tints are available. I'd guess it's in the 6000K range, close to a SBT90.2. Dave's been trying to keep info updated on these new Chinese LED's here: https://budgetlightforum.com/t/-/67698, but it's difficult. Even BanL at Kaidomain doesn't know how to ID these things.
This one is one of the new Chinese LED's: http://kaidomain.com/Flashlight-DIY-and-Tools/LED-Emitters-or-LED-Star-on-PCB/other-leds/Custom-P35-HI-3V-8000mA-1800-Lumens-LED
and he calls it a custom P35 HI... We think it's an SFS80 I believe. That one is available in 4000K - I ordered qty 5 yesterday in 4000K.
You will never get over me! Never!
? Wut??
not many answers make me happy……this one absolutly.!!
iam a bit lost in the sea of this new leds…Never heard about them yet…So still we cat buy them yes?
Sorry, bad joke. Thread name is over 9000 lumen…
Ohh, my bad! 
Not yet, they are still too new.
I only know the meme, was never an anime fan myself lol.
Haha! Same here, but I somehow thought it would be fitting a Flash light forum! 
PS. And the photo, I took it myself!