I’m enjoying my light, 25% practical/75% grins and giggles. A run of 20700 tubes with a little more metal than bored out tubes might be a nice addition. As is the tube and battery are half the heat sink.
How do you fit a 20700 in the D4?
Will the upcoming Tesla cell be 21700 or 20700 btw? Have they decided yet?
Still waiting for my two green D4s… I started a bad habit, collecting flashlights in pairs.
Twice the cost but “two is one and one is none” or something like that.
There is a new 21700 out, by Sanyo I believe it was, but constant current is low at under 5A.
I bored the tube on my D4 with a lathe. 
4523 lumens is pretty ridiculous in this small light, I’m waiting for my short tube to arrive with some different emitters and I’ll be stepping it down to the 18350 and more reasonable current draw/output numbers.
It was all an experiment to see where the max was… it’s kinda what I do. 
Holy smokes! Check out what Vinh did to the D4. The beam shot pic is against the ZL SC600MKIII.
PRETTY IMPRESSIVE THROW for a tiny quad optic 18650 light.
http://www.candlepowerforums.com/vb/showthread.php?437641-Emisar-D4vn-Smallest-18650-Quad-Thrower
Edit to SC600 III
That is not the HI version. So it’s not that impressive.
Question, which emitters will benefit from the Mountain Electronic board that changes the angle of the LEDs? I want to possibly do this if there is an advantage. Thank you!
The Carclo optic is most efficient with the XP-G2 emitter, so the de-domed variant gives better throw vs an HI. It’s not always about absolute lumens, but of course the XP-L2 would be the way to go there.
Don’t let your fellow Texans hear you say that.
Just in case anyone in USA needs aspire 1100mah 18350 batteries($4.55) for your D4 shorty, and doesn’t want to wait for the slow boat ride, Mountain got theirs in stock today and they usually ship/receive very fast…
jmo
Well, it’s not. My son wanted to show me what may have been an ant bite on his knee, tried to light it up with the Jacob A60 I gave him for his birthday. Couldn’t see squat, with that laser hot spot on his knee! lol
That cannot be correct, hint, read the OP, should be like 250 times less.
The D4 doesn’t go into standby mode until a few seconds after the light appears to shut off. Measure a few seconds longer to see the actual standby current.
Yes you are correct and i confirm that it went to sleep mode few seconds later and the current drop to 24.5μA, Nice almost nothing.
thanks.
FWIW, the standby delay is fixed in my new code project.
If I understand correctly, the delay was there to allow for handling of trailing input events, to make sure the LED was off and the switch wasn’t still pressed. But that’s all automatic now so it doesn’t need to wait.
Pretty much all of them.
Changing the angle of the LEDs eliminates the square corona produced by the Carclo optic. I’ve tried XPG2, XPL HI, and Nichia 219C with both boards and confirm that Richard’s offset star produces a better looking corona with all three.
The Mtn board doesn’t completely eliminate artifacts or weird corona shape… but it does help rather a lot. It basically gives you 16 dim flower petals instead of 4 bright ones.
Right, and the Nichia 319AT looks nice from that design as well.
Is this a correct translation?
FWIW
“For what it’s worth”
Another acronym for IMO