Do not worry, for I am a terrible tease :partying_face: :
Post #475: New 4XP Noctigon MCPCB for quad optic
i actually prefer the D7 or D6 if exist to run on 20700 instead of 26650. 20700 or 21700 is where the battery technology is currently being pushed further.
Thank you
I wish for 21700 D4. With bored tube 20700 fits already. A slight size increase and it would take 21700. There are no great 21700 batteries available now, but this format really seems like the future.
Battery size increase would give us 5000 mAh with current 18650 tech. And with nearly the same flashlight size.
Try to make sense of the rainbow, but there’s not much difference in output between good batteries. The individual cell samples are probably just as different.
If I remember right, the D7 will have 3 pieces of 18650 batteries and 7 LEDs.
yeah i second that.
I saw a news release the other day where Yuasa in Japan announced a breakthrough in Lithium-ion cells that will be giving much more range to electric cars by 2020 or earlier. Didn’t see specifics… change is coming though.
hey sorry for the noob question but what does it mean if you hit turbo, get three distinct blinks and then get low? was it trying to tell me the cell didn’t have the amperage or the voltage to maintain the output? the cell was a GA and have 3.5v upon hitting the charger
i was able to take the tailcap off and replace it and it stopped doing it
At 3.5V, the GA probably doesn’t have enough oomph to run turbo… it sags and kicks in low voltage protection.
My XP-G2 S4 5D D4 arrived today very happy with the tint :
D4 XP-G2 5D (left) X5 Nichia 219C 5000K (right)
EDIT : Changed the emitters to Nichia 219C 4000K CRI92
D4Nichia 219C 4000K CRI92 (left) X5 Nichia 219C 5000K (right)
Now it’s perfect
The family should know better than to leave me home alone… made Daniel play with Shadow and spent a little more time on the lathe, dressing up the D4. Now it’s Baylor University colors and looks pretty sharp! 
I cut brass rings to either space it (at the tail cap, cut a new o-ring groove so it maintains water proofness) or simply at the top, for aesthetics. For a very brief moment I considered giving it to my brother, with his season tickets to Baylor home games, but well, naaaaaaa! 
nice look Dale! Thanks for sharing the picture.
Should get a better pic, playing with this new iPhone… took 2400 pics at an event Saturday, tired of messing with the big camera’s. lol
Edit: I should make that clear, I only took 771 pictures, gave out before the night was done and have to admit that I was NOT ready for an all day event! My wife took over 1600 pictures. We came home feeling mugged. Both hurting and broke as well (didn’t get paid, supposedly today, yeah, ok.)
I have the D4 in 219c and xpl hi and have noticed with battery voltage check the xpl hi reads .1volt lower than the 219c using the same battery Has anybody encountered this as well?
Can we buy D4's driver separately in future?
You can buy a FET+1 @ Mountain Electronics with D4 V2 Ramping firmware.
… in various different diameters. My shipment arrived today! Next project will probably swapping one into a DQG Tiny III triple.
Again no reply from the driver gurus?
I’m not a driver guru, but my guess is potting the driver with silicone, or squirting into the driver cavity lots of thermal grease, or putting a thermally conductive sponge on top of the MCU with the other side of the sponge pressing the bottom of the shelf all would have the same effect: Faster thermal transfer to the heat sensor and possibly a faster response in ramping down when it gets hot.
The potential disadvantage is that Toykeeper calibrated the thermal sensor for this exact light in its stock configuration. She said it doesn’t ramp down temp based on current temperature, but rather it looks at how fast temp is changing and then adjusts output down based on predicted future temperature.
Increasing the thermal conduction to the sensor might cause the temperature to change too rapidly at the sensor and result in excessive stepdown.
Still… only one way to truly find out…… you should test it! :sunglasses: