IMO a tail switch on these monsters is ridiculous. Try to hold it one handed and operate a tail switch with the thumb of the hand holding it. I note though that the actual sellers info on the lights list 3800 Lumens for the AliExpress listed one and 5200 for the other (DX Kinfire one) which is close to honest advertising by typical Chinese seller standards. BTW does the name Kinfire mean that it burns up all of your kinfolks?
Note that the AliExpress one states that the price is negotiable for large orders. Start negotiating! The Kinfire is listed as 30.26 ounces. Light weight as my new TrustFire TR-S700 with only 7 LEDs weighs in at about 54 ounces with three 26650 batteries.
I have the 18x xml version (first real light after the 3x xml) and i dont like it that much… its very underdriven since to my eye it is just as bright as my new fenix tk75 xml2. It can be used as a besball bat though. If someone wants it to make a crazy mod just pm me
i have never heard that, but two questions remain unanswered, would duct tape have lower or higher density then what they used, and second, will it blend
My TrustFire X-100 (7x XM-L) reads 2.24 Amps at the tail cap when using 4x 26650 King Kongs with total voltage of 15.97 volts (35.8 watts). If my calculations are not wrong, that would get me a computed OTF of 3391 lumens at 484 lumens per emitter.
If I can use the X-100 driver for this 21x XM-L and all other things (current, voltage, etc.) remain constant then theoritically (I’ve not tried it yet) the computed OTF would be 4221 lumens at 201 lumens per emitter. Brighter than the X-100 but obviously not 25000 lumens. :~
I used the Cree LED Output Calculator uploaded by Sixty545 in September 2012.
My UniqueFire UF-T09 9X CREE XM-L is a 3x 26650 only light. But I can tell you once you use one of these longer lights with a side switch, as the UniqueFire has, you’ll never want to use one without it. It’s the reason I actually considered one of the variant 18x cree lights due to one version actually having a side switch. But I knew if would be very underpowered, and I didn’t feel the need to carry a 4x 26650 light.
One reason I bought the TrustFire TR-S700 which is a lot heavier than this is the format which is soupcan style but HUGE and with a handle that contains the switch and integral output adjustment which makes for easy one hand operation, so it can be done with thoughtful design. Expensive but actually a practical light.
Why? I use my 15x (4x26650) light one handed all the time, last night on a 1hr walk, I’d love to have a forward switch instead so I don’t need to use my other hand. I’ve always wanted one on my J18 too, and thats a much lighter light.
If it does have 21 led’s wired manually, it must have been a heck of a pain doing so, not to mention getting them all aligned correctly to the reflector. But it’s possible they created a pcb as was done with the Lightscastle 12x Ultrafire (SuperNight) flashlight.
Still, even if this 21x light was upgraded with a more powerful driver, no way do these types of lights have proper heat sinking to handle it. So far, the only couple of multi-LED lights that can handle much higher power than stock are the Trustfire S700 and the Trustfire TR-J20, just to name a couple of them.