Emisar D4S review

Excellent . I really appreciate the comparison at the end of the review.

Count me in, if D4V2 happens. I prefer 18650’s.

After thinking about this light some more, I have to agree that 20700 would be the better battery format since basically none of the big battery companies make a 26650 that I can see. But I guess it should be possible to adapt from 20700 to 26650 size slot to use one in a D4S. Might have to find someone to print an adapter though, I’m not finding anything commercially available.

Edit I’m an idiot, 20700 is longer. Damn.

Some of the protected 26650 cells are 700mm long. I doubt this light was designed to work well with protected cells but I wonder if some thought was put into accommodating some of the larger/longer cells and if they could work with a 21700 or 20700. The D4 doesn’t seem to have extra long springs, but perhaps this one will…

Nice detailed review TK.

This sounds like a first class light. I am looking forward to it. I like the idea of the "SAFE" blue LEDs.

You could simply glue the LED (s) to the MCPCB or solder one end of a LED to a power pad at the MCPCB as I did in my Green Lantern.

Very promising indeed. I’m in for one for sure.

The ~20 years runtime on aux LEDs (low) is already the dealbreaker for me…

Is there really a new version of the DQG avaible? I have only seen V3 up to now.

I also consider the D4s too big compared to the DQG, and would have preferred a 7 LED variant. Now I have to use the DQG for my planned RGBA + 3x white build - which is way more difficult due to the serial LED setup and the driver design.

It’s probably worth noting that the li-ion cell’s self-discharge rate is faster than that, so it probably won’t actually last 20 years per charge. But if the driver and LEDs were the only source of drain, it looks like it should last a couple decades based on how low the power draw is.

Effectively, there is no difference in terms of battery life between the low aux LED mode and off.

Yeah, same here. 1x26650 is simply too big for me to carry around all the time. Otherwise it’s a nice light though.

Not every flashlight has to be “edc”-small. This looks like a fantastic light for a backpack/bag, car, maybe even jacket pocket carry for an outdoor event. I’m into it.

it is possible if I have the measurements of the Noctigon boadrs
I made very similar in this build

sanded down 0.8 to 0.2mm

thermally glued not needed on aux LEDs

0402 and 0603

with balance resistors and LDO so each LED could be another color and constant brightness over whole battery voltage

Perfect, now I want some orange aux LEDs on my D4 :person_facepalming:

I have a D4 MCPCB at home. I will measure it just tell me what dimensions you need. In D4 the screw holds the MCPCB and two legs of the optics resting on the screw. So if we make like D4S and same screw holding down the aux pcb you need to cut off more from the legs on screws. Maybe you need use longer screws also.
Edit: I think less leds are also enough. like 6 or 8.

Ummmmm… Yes, please!

looks great, a green would be nice to my green 18650. I hope price will be around 50$ or so but who knows…

Holey moley!

Just because you can draw something doesn’t necessarily mean it can be made.

Try snapping that one out of a biscuit. Nevermind routing out all the big holes.

I’d love me one of those boards to pimp my D4 :party:

I am in contact with Intl-outdoor so they should become availiable fully assembled from him

Cool.