Noctigon K1 info / review

How many Amps it pulls in Turbo? 4? 4,5? 5?

TK

You have my attention.

“On paper” how would you compare the K1 to acebeams T27? I know lumens aren’t everything, but… 900 compared to 2500?

I would love to see a warmer version as well.

I’ll be waiting on the price.

With those, it would have a bigger hotspot and more lumens but less throw. Potentially a warmer tint, too.

It should look good with XP-L HI or XHP35 HI, since they’re both flat and have pretty good color consistency.

However, SST-20 might not look so good. It could have issues with focus or tint, since it’s a taller LED and it emits different colors at different angles. Specifically, the green parts of the beam go sideways into the reflector, making the hotspot appear green, while the pink parts of the beam go forward out the lens into the spill area… which contrasts against the hotspot to make it look even more green. It’s similar to the Cree rainbow effect.

I don’t see any positive contacts which are close to a negative tube. Where are you seeing that?

Not sure. I’ve never heard of the T27 before. However, its specs say its beam is about 58% as intense as the K1, despite making almost 3X as many lumens. So it would probably be visually similar to the D1S, but with a higher turbo mode.

As to T27 one interesting link is https://skylumen.com/products/acebeam-t27vn-best-21700-thrower-r
Performance seems within error margin from K1 with White Flat though Vinh needs to remove charging to support this LED.

SammysHP, do you plan to put your keys on the flashlight while is charging? Screw driver to sit on it or a knife?

Pretty neat addition, the throwers in the Emisar/Noctigon lineup have been more interesting to me than the hot potatoes so this is nice to see. The cool white is a non-start for me though, but the samples of that LED I have seen have at least been very clean so should be quite nice for those who can tolerate such high color temps. I am curious how this would throw with a XP-L HI or XHP35 in it as those are available in nice tints and CCTs and realistically I can’t reliably see a mile in daytime for identifying anything anyway.

Nice work as always to Hank and Toykeeper.

The hole in the beam from such close distance isn’t from having a defective unit, that’s just how well-focused beams look at close range. Having used an Acebeam T21 and Maxtoch X Pro modified with Black Flat and White Flat 2mm accordingly, I can attest to that artifact.

The second graph doesn’t make it seem too regulated on highest output? Unless the second graph is with the warm room thermal regulation as well.

Available now with the Osram LED
https://intl-outdoor.com/k1-long-range-led-flashlight.html

There will be XP-L HI, SST-20 (good beam) options in the future,
for now, there are only W1, W2 options.

Order placed ! =D

Probably with a different cell like 40T, one that has more voltage on load will be more regulated than with the 48G cell.

It is already written in the review:

“This test shows a Samsung 48G cell, which is among the weakest 21700 cells on the market. A higher-amp cell would stay flat longer.”

Beautiful light, excellent design with tge built in USB C!

I will wait for the XHP35 version though, since it makes it a better all rounder.

4.9A for the W1, 7.8A for the W2.

But doesn’t a well-implemented regulated driver keep constant regulation regardless of cell voltage and resistance? Something like a Zebralight will make a cell that’s nearing 3amps still output turbo.

The graphs look like a direct-drive graph ie following the voltage sag of the cell.

No, you’re thinking of a boost driver which can step up the voltage from the cell. Zebralights use boost-buck drivers (which can both raise and lower voltage to maintain max efficiency), not linear.

It’s a linear driver (that basically converts the additional voltage into heat), unlike a buck/boost driver used by ZebraLight.

Well hopefully a cell with less resistance fairs significantly better, because that driver might as well be run of the mill fet+linear based on the graphs.

It’s not using linear regulators, but rather a FET + sense resistor for determining current IIRC? Like the recent Convoy drivers do.

The XHP35 HI versions will use a boost driver, as that emitter is only available in 12V.

Hank great job! Also ToyKeeper thank you for putting your amazing UI in another light. I think the lighted switch is awesome and the light seems very high quality. Now I need to decide if I go with the Osram leds or wait for something with more lumens…