Thanks for the heads up. I have to try the Cree XP-G2 S4 3D ~5000K - Neutral White. The only neutral 5000k and below I have not tried yet and he had them in stock. 1 more left I think.
I’m sure Mtn is sold out again.
He only had 2 left last night when I got my “green beauty”. 
Availability: 47
I picked up the last Green 3D last night…this forum is a bad influence…
Now you need to order a grey and black one. And a 4th one to strip the anodizing off for the polished bare aluminum look! :laughing:
Already have a grey nichia…now thinking about a black xp-l hi…unfortunately (fortunately?) anodizing’s already coming off on my grey one from the clip scratching it…so yeah, you’re right, I might have to strip it completely and order a 4th to replace the grey 
. You guys are bad influence I tell ya :smiling_imp: .
He has 43 left as of right now. I’m not sure which emitters/tint/body colors/ are still available but there are 43 D4s as a total left at Richards site.
Ordered my D4/3D from Mtn, at breakfast, shipped by lunch. Can’t beat for service. :+1:
I’m NOT ordering a second D4! NOT NOT NOT NOT NOT NOT NOT.
Fine, Skip the second, go right to the Third.
Back almost a dozen pages, ven mentioned about how he was running through 18650 cells in no time and I thought I’d take a closer look into the ability of my D4 to work with smaller cells.
I have been spending time alternately using my new Desert Tan Convoy S2+ and my D4 but not using either seriously or for any real extended period of time. I had my D4 loaded with a purple Efest 700mAh cell and tried out the battery check. After very little use (mostly lowest mode to read by at night and a handful of times running it through the ramping and showing it off) the cell was already down to 3.8 volts. I had barely used it.
Even though it looked so cute with the smallest tube (and the purple Efest completing the hulk look) I’m back to the 18650 tube, Convoy clip and either a GA, VTC6 or 30Q. I’m hoping these will last at least four times as long, which may not be all that long in the real world…
Still love this little powerhouse.
At about 15 amps, a 700mAh cell would only last 3 minutes. Probably less, really, since capacity is less at high amps. It could probably drop a 18350 cell to 3.8V in under a minute of turbo.
However, the same cell should last for 2 hours at the max 7135 level, or for about 3 days on moon. Closer to a full day at the ‘low’ level I find most useful.
So… runtime of anywhere from 2.5 minutes to ~3 days on a 700mAh cell, depending on how bright it’s running. With an Aspire cell, it’s more like 4 minutes to 6 days. With a 3000mAh 18650 cell, more like 9 minutes to 15 days.
This can be maximized by starting each session with a long press, and releasing as soon as it gets bright enough for the current situation — bright enough but no more than necessary. Then turn it off and on with a single click until you’re done. Turbo really is only for bursts, and will eat through batteries like there’s no tomorrow. Every second spent in turbo uses about as much power as about 30-40 minutes on moon. If you show off turbo three times for three seconds each, that burns four to six hours of moonlight.
TK, your first post of this review mentions over 4,300 lm with XP-L HI.
But it doesn’t tell which tint do you use. Cooler is V3 flux, warmer is V2. Could you clarify?
Hello
I need your help. I have next problem. When I turn on the light and put it at 30, 50,75…% it always happen next: after 5 secondes light flashes 3 times and lumens are reduced, this is repeating every 5 secondes and lumens are again reduced. This cycle is repeating few times till FL reach 1 lumen or very small amount.
Do you maybe know what is wrong? Do I have defect FL?
Thank you
What batteries are you using and are they fully charged?
Man this data is really making me reconsider my change to a FET + n + 1 driver…
It doesn’t seem like it would actually be much more efficient, but I guess the regulation would at least be nice.
The problem is not at all the amount of regulation but the sheer output: you want 4000 lumen?; then your pour single battery is sucked dry in 3 minutes! You want 4 lumen to read your book? (The beam is great for reading a book) You have 50 hours, enough to finish half the Potter series.
I’m actually not too interested in the 4000 lumen output, but I was hoping to be able to get say 1000 lumens of stable output with significantly longer battery life at ~300-400 lumens.
Looks like the 7135s may put out too much waste heat unfortunately.
What D4 does now puts out even more heat at the same lumen output.