Ultrafire X8 UV Mod

[djozz]

I actually tested the led listed in the OP, it really can handle 2800mA and it puts out an impressive amount of 400nm light:

An effort towards a repeatable test method for UV-leds. New tested: 3535 365nm Liteon led, 5050 (XM-size) 2.8A Epileds 400nm led

[image] Introduction I have tested a number of UV-leds, but sofar I have been struggling with the method: awkward to perform, not repeatable enough, sensitivity changed during the test, and a recent drawback: no good way to add a ZWB2 filter in the light path. To be able to use a normal luxmeter, thusfar I made use of copier paper fluorescence, first by making an unstable stack of ledboard-reflector-(filter)-paper-plastic lens, and hovering above that the luxmeter (link), the last set-u…

It will work in any single 18650 flashlight. Perhaps easiest will be this host because it is cheap, good quality and will accept the 20mm star that your led is on, and a standard 17mm driver: https://www.fasttech.com/products/1618/10002463/1277400-convoy-m1-diy-edc-led-flashlight-host
For a driver you can use this one, also from Fasttech: https://www.fasttech.com/products/0/10001683/1122302-8-amc7135-4-group-25-modes-led-flashlight-driver-c.
Just screw the ledboard in place (preferably with a tiny layer of thermal paste under it) , solder the wires to the ledboard, solder the provided spring under the driver board, and fix the driver with the provided screw-in brass ring. There should be a small plastic led centering ring with that flashlight but it is not shown.