Emisar D4S review

I was actually never all that impressed with the Shockli 5500 in my lights. For a time the black and gold LiitoKala had me buying more, but the Golisi Gold changed that. The Shockli cells I had were good performers, no doubt, but not game changing or head of the class performance wise.

But, in interest of staying up to date earlier today I ordered a pair of the new Sony (Murata) VTC6A 21700 rated for 4100mAh and 40A continuous. We’ll see…

OK, thanks

sigh Somehow I missed the D4S being released in cyan….and another want added to the list. I love my green V1

Where do you buy those golisi gold batteries?

I notice a new Anduril hex file revision for the D4Sv2 (2019-08-28) in TK’s repository: Index of /torches/fsm

(probably a dumb question…)
I assume this Anduril firmware only works for the new D4Sv2 (attiny1634) and will not work (or will brick) the D4S v1?

I was ordering something from Banggood, so I threw in some 26650 Golisi Gold. Took a while to arrive. Just Google it. Some say they are best if you are driving your battery over 7 amps a lot, but the Shockli 5500 have longer runtime for use under that. But they are both quality batteries.

The D4S v2 firmware won’t even flash onto a D4S v1. They use different control chips, which makes avrdude fail (as it should) with an error.

The new build is basically the same as the 08-05 builds, except that D4S v2 wasn’t public at that time so I didn’t add it until later.

Which battery allows you to have more brightness?

Just to clarify. If I specify a black light with the 1A LED and red Aux LED with Anduril firmware, I will get a light with the same multi color aux LEDs as the D4V2?

Thanks for the clarification. Now I just have to decide which LEDs. :slight_smile:

One more question:
What is the difference between the SST-20 and the XPL-Hi in 6500K in this light?
does one get brighter or have more throw or less heat?
Thanks

It’s often mentioned that SST20 LED gets hotter faster than the XPL-Hi LED.

XPL-Hi can also reach a bit higher brightness than SST20 (however, in the case of the D4S, the battery may be a limit on how much 1x 26650 can power 4x LEDs).
(Emisar’s specs for the SST20 is “4200 lumens max” and XPL-Hi is “4300 lumens max”)

Hotspot size comparison for Emisar D4S with XPL-Hi 5000k (left side) and SST20 5000k (right side)

The SST20 has a slightly more focused beam (slightly smaller hotspot) than the XPL-Hi version.
(distance of flashlight to “wall” is around 18 meters / 60 feet)

Beamshot video of D4S with SST20 5000k vs D4S with XPL-Hi 5000k (mainly for hotspot size comparison):

Regarding throw, check if you can notice their differences in throw:
(distance of flashlight to opposite building is around 150 meters ~ 400 feet)

Emisar D4S with XPL-Hi 5000k:

Emisar D4S with SST20 5000k:

Don’t check any of the boxes for auxiliary color. If you leave them blank, and specify Andruil, you will get the D4SV2.

This is beginning to sound like old video game cheat codes. Hank really needs to create a new product listing for the D4SV2 to avoid all of this confusion.

I placed the order and I did check “red” but I think it went through properly.
This is what the order looks like:

Emisar D4S 26650 High Power LED Flashlight

body color
Black
UI
Anduril UI (the same aux LED function as the D4V2)
LED & tint
Cool White - XP-L HI V3 1A, 6500K
AUX LED COLOR
Red
Please choose
Stainless steel bezel, Add magnet in the tailcap (no magnet in the tailcap by default), Buy an extra tailcap without magnet

The D4S is fully regulated at 400L and below. What is the advantage of this versus full regulation over the entire brightness range, assuming we retain programmable thermal regulation as a feature?

Regulation in these lights is achieved through use of the 7135 chips, the multiple channels. With the number of chips on the board it is fully regulated at approximately 400 lumens, above that the FET is kicking in with PWM to raise the output level.

D4S v2 is now officially available:

Of course I ordered mine last night for more$$
Never fails
This is why I don’t gamble

Why has Hank removed the Anduril option? That’s a problem for this technically limited non-flashing Flashaholic.

Is that an advantage over a fully regulated light? I don’t have the technical knowledge to understand references to the 7135 chips/multiple channels etc I can only guess that the limited regulation is a necessary but small issue compared to the many advantages of the total package.