Of course, typo.
After several tests with cooling the light in between the most I got at 0 sec was 4413 lm. The 4325 lm is an average out of three. Using VTC5A didn’t make any real difference, 4440 lm on average with a max of 4500.
What is the actual lumen number you got on the max regulated with your integrating sphere?
So that’s ~630% of 7x7135 at 0s. With 3 x NCR18650GA cells, I got ~4650 at 0s, which is ~630% of 7x7135 at 0s. With VTC6’s, that ratio is ~680% (5050 / 740).
Some white wall beamshots from TIR lights.
The ROT66 will be great for night photography in a US ghost town.
Wonder what a minus pink filter would do for it in terms of subjective and objective differences? Of if the AR coated lens has a tint that’s green/magenta that also slightly affects tint?
My calibrated TA tube measurement for Nichia 219b version is
4740lm @ 0 sec, 4300lm 30 sec. with VTC6 4.2V
Similar test result with either VTC5A or GA.
I took time redo calibration for my TA tube. Now, my 219B ROT66 with 30Q’s measures 4440 lumen at 0 second, 3910 lumen at 30 seconds.
I just want to say that Jacky of Enogear/Fireflies did just reply to my email and sent me my replacement Enogear AA stainless steel and sent me a free stainless steel 14500 usb rechargeable light. Therefore I will definitely buy more of the ROT66 soon. 
Finished my review:
Can I send my DOA XP-L back?
Yes, 2 year warranty, please email us
ROT66 Aux led board available now
The MF01 219C v1 (6 wires) is more one the rosy side than the MF01 219C v2 (2 wires) that is more on the yellow/green side. If I remember well, charles lin’s MF01 is a v1, both of yours are probably v2.
If the aux led board was offered with more emitter color choices, it would be a certain hit. Many people didn’t like that Emisar only offered the cyan ones. This would have been a opportunity to set your stuff apart.
Yes please, amber secondary would be much more useful than blue.
Fireflies, can you post some photos of the board itself and installation procedure? Does the firmware of older lights support it properly?
I’m ocd and it kinda bugs me that the emitters on the side switch aren’t the same color of blue as the gitd strip. Aux LEDs could alleviate that I guess but I like the subtle glow and color of the gitd strip.
Talking about tiny amber smd leds, has anyone found a version yet that is a phosfor-converted amber? (so more efficient than direct amber leds) I have several PC-amber leds in powerled version but have not seen them in tiny format.
Good question. If not though, I should have Anduril working on the ROT66 soon, and it can run aux LEDs in four different modes if compiled with that option.
+1. I want amber and pink/purple aux lights to match the 219B 9080.