Good news.
@freeme, I use an adapter for a 18650 in lieu of the larger cap 26650
On my D4S. For what itās worth.
Have a bunch of 18650, only one Shockliā¦. 
You know what would be nice?
A 21700 D4 with a lonoceans boost driver/constant current FET+FET driver.
Iād be willing to pay a pretty penny for one. 
The Wuben feels like a brick for a tube light. IMO go for the D4S Angie optics (1000x better than Carclo junk) and neck down the tube to 21700.
1 Thank
Yes, i use that occasionally to save some weight.
Optional adapters possible in the form of inserts, or swappable barrels?
21700. 18650. 26650.
LEGO D4V2 
such a genius light!
I initially thought that the bright mode for the auxillaries was too bright, until I found them bright enough to help light my way to the bathroom, at night. I set lockout with bright red auxillaries so at night I can switch between Red or momentary moon. When I unlock in the morning, my auxillaries are usually in dim voltage mode.
Are you saying the light needs to be charged daily? Is it really going into low voltage alert over night?
I am sorry if I wasnāt clear. During the day when I unlock my light, I have the auxillaries set to monitor/report the state of the cell as to its charge. When I do so, I have the auxillaries in dim mode. (When the flashlight is mostly charged they are blue.)They are easy enough to see unless in bright sunlight, but then,why would you be looking at your flashlight?
One of my dreams is for Emisar to do a light with a boost driver.
Received sand, xpl 3A today and the 18350 tube.
Kind of a matte gold more than yellow/brown which is fine by me.
Aux LEDās are really nice touch. Its like a whole other mode set to play with.
Very clever blending LEDās to mix extra colors.
Even more clever is conceiving and writing software to control a chip to make all the options for a single button to control. Quite advanced from our younger days of āon/offā.
With the short tube on, pumping out turbo and having blinky lights of many colorsā-feels like itās something that a time traveler left behind.
Truly a minor milestone in flashlight tech.
They really crammed in as much novelty, utility and features as that little package could hold!
Great job TK and Emisar!
Recieved my one also today. SST20 6500K in dark grey. I luv itā¦
Really nice crafted. the print of D4V2 on the talicap is perfect placedā¦
Need to explore all featuresā¦
Great Job, Emisar and Toykeeperā¦ 
+1
challenges my zebralight recommendation/purchases.
I wish it had the clip that the zebralight has. I am thinking about picking one up, but the idea of a pop on/off clip just hurts.
Most Zebralights use a friction clip tooā¦
The smaller zebralights like the SC60 series and SC50 series all use screwed on clips. Only some of the larger ones like the SC600 series use slip on clips.
I assume he has something like an SC64w HI, which uses a screwed on clip.
Got it today.
The aux LEDs in high mode use more power than the main LEDs in moon mode. For what you described, you may as well just leave it on all night in moon mode. It would be brighter and would drain the battery less overnight.