Monster light Trustfire x100

One seller: http://www.lightmalls.com/trustfire-x100-7xt6-7-cree-xm-l-t6-high-brightness-8000lm-5-modes-led-flashlight-4x26650

And another: http://www.iaminthestore.com/trustfire-x100-7t6-7xcree-xm-l-t6-high-brightness-to-8000-lumen-5-modes-led-flashlight-with-gun-package-and-strap-4x26650

(haven't heard of this latter shop before)

Trustfire X100 at manafont: http://www.manafont.com/product_info.php/trustfire-x100-cree-xml-t6-7led-8000lumen-5mode-memory-flashlight-black-aluminum-alloy-finish-3426650-p-10247

That's a pretty long light to have a tail switch. This new Trustfire, like its predecessors are still limited to 7.5a regulated current.

Yea, I didn’t notice that at first, makes me a sad panda though.

I missed something. Why is 7.5 A no good?

Because it’s severely underdriving the LEDs. At 7 LEDs you would like to see 14 amps or more, 2A per LED, hell, even 10.5 for 1.5A per LED would be better, but at 7.5 for 7 LEDs you’re giving each just a little over an amp, almost pointless.

So this has the same brightness (lumen output) as the TR-J18? Which is commonly observed to have similar output to the J12, right?

The beam pattern would be different though. This one should throw farther than the J18 with deeper reflectors right?

That would be my assumption.

TR-J18 runs with 3*26650 or 3*18650. X100 runs with 4!

Oh yeah, I missed that, thanks. I thought the 7.5 A was battery current but I see now that it's "regulated" 7.5 A so it must be the LED current. Gee, if that 7.5 A figure is true, it's only pushing about 25 W into the LEDs. Some of the 3x XM-L lights are doing 30 W or more already, so what would be the point in manufacturing this huge light driven at only 25 W?

I hope the 7.5 is a typo. Or, if the 7.5 A turns out to be the battery current, now we're talking...

7.5 A x 4 x 3.5 V (approx. battery voltage under load) = 105 W

driver efficiency = 80% approx. ==> 84 W reaching LEDs.

12 W per LED ==> about 3.5 A per LED. That would be awesome but the light would get stinkin' hot, fast.

The heads only 75mm

Looks interesting, but aside from using 4*26550 not sure its really any different than the J18; so then the current price would make it a hard sell.

Oh...another X100 thread.

We need 9 XM-L heads now. Then we can stuff 3 x DRY drivers inside and use 3 x 26650 IMRs or King kongs. Hehe.... In High it should do approx 5000 lumens OTF? (IIRC it is about 1700L OTF in High with fresh cells). Turbo, if the batteries can take it then 7500L OTF is doable.

In Thai forum, Trustfire X100 tested

3 cells tail cap draw about 4A
4 cells ——— 2.3 – 2.4A

4A x 12.6V = 50.4 W pulled from cells
50.4W x .80efficiency(typ) = 40.32W into LED array
40.32W / 7LED = 5.76W/LED
5.76W / 3.4Vf = 1.69A per XML (assuming 3.4Vf)

So on paper it should be more lumens than the TR-J18/J12, and the bigger reflectors will project a tighter beam. It draws almost double the power of the TR-J12.

When measured 4A @ tail cap mean Vload for 1 cell is about 3.3 - 3.7V, depend on type of batteries.

3 cells @ 4A , 9.9V - 11.1 V about 42W

Guys,

Just buy you a TK70 and stop messing with these that aren’t going to work near as well. You will be money ahead.

Wow!!!

I just broke 2 of my fingers and spent 12k on surgery though, just came back frm surgery fitting titanium plates. :frowning: explosion.

I’m sorry to hear that, get well soon :slight_smile:

After the accident, realised that life is short. need to get more lights. :smiley:

2.3-2.4A seems to be near the original triple XM-L SR3800….but that’s like 2.55A 2 cells but for 3 XM-L. This is with 1 extra XM-L for slightly better efficiency. I think this one could be like ~ 3200 lumens OTF. Cool!