Fireflies E07 preview

Johnny makes a lot of good points. Guys please don’t use Paypal until you have really exhausted all options. We are very fortunate to have someone make lights that fulfill the wishes of our small BLF niche. These feature combinations incorporated into a flashlight prior to Fireflies were a BLF dream and Fireflies helped us turn our dream into reality. These features include the much coveted Lexel designed driver, BLF designed NarsilM/Anduril firmware, abundant LED options including the discontinued legendary 219B sw45k 9080, good option of beautiful aux LEDs, AR coated lens, awesome heat dissipating design on E07, clear anodized option, multi-emitters in compact form factor, and some of the brightest production flashlights for their size category. The E07 is measured to be twice as bright as the previous brightest single cell flashlight, D4S, which to me is quite an astounding feat. I don’t consider the TM10K because the lumens were not verified by calibrated equipment, much larger form factor, and turbo only last 7s.

Sure that the build quality is not as good as the Emisar/Noctigon lights and there definitely are bugs and imperfections, but what do you expect from a brand new small (1-man?) shop making lights for a very small enthusiast niche? Even large billion dollar companies like Microsoft and Apple with tens of thousands of engineers have countless bugs with every new version and updates as can be seen all over the news and forums. FF only sold a few hundred of each light at a very bargain price so there’s not a whole lot of money to be made especially if you include the R&D/production cost. Let’s try not to bash them and utilize Paypal to get a free light as that will only discourage them and BLF will lose a valued flashlight maker. I do say it is bargain price because if you go on CPF you will see lights selling for 5x to 10x the price cannot match FF features.

Btw, I have 2 PL47 and 5 E07 and tested it with so many different 21700 cells with zero problems. Only the Acebeam protected 21700 doesn’t fit but no other 21700 lights can accommodate that cell besides Acebeam lights. I am also extremely happy with these lights for the price despite there are room for further improvement.

can you please measure the length of your E07 battery tubes?

73.93mm if i have it nice and flush. Several readings just above 74 too but I think it was crooked.

Battery is around 70.5mm

Driver side spring bypass is a pretty decent size blob but it’s only attached to the top of the spring and the spring will still flex a bit allowing the wire to compress into the driver. From ~4mm to 2mm

Mine is 73.93mm as well.

Well said SKV89 My two E07's have not arrived yet, but whatever I get I'm going to cut ff some slack as they created something pretty special here. Obviously there are many E07's that are working just fine and in time they will figure it all out. I have two rot66's, one with anduril and the other with narsilM and both are perfect after members here helped me figure out how to adjust the battery cage on one of them.

Received my clear ano Nichia 219. Oh man… Its perfect. Colour of light is good. Machining is so nice, feels good to touch. Can barely feel the machining with nails… Awsome. Switch needs to be pressed hard. Just perfect… Im happy, thanks FF

The tubes on both of my E07s are 73.93mm. However, the solder blob on the spring in one of the heads is a bit larger than the other, so the same battery sticks out more of the tube on that unit.

Given other people reporting tube length of 73.93mm, it seems the issue is not manufacturing/QC but simply that the design of the tube was spec’ed too short. I’d pay $5-$8 for a new 76mm tube so I can avoid the gap caused by inserting a copper ring in the tail cap.

how does one return all settings to default position? Or is that done individually? :person_facepalming:

thanky for your measurements!
mine is 73.9mm too

(so its not a manufacturing variation)

another puzzle piece:
the guys with the non sharp fins have the clear ano version? right?
colored heads are sharp?


EVERY FF and Anduril user should download and print this out. It makes everything clear. Thanks for posting this TK

EVERY FF and Anduril user should download and print this out. It makes everything clear. Thanks for posting this TK

well, it’s a start to making everything clear, but very helpful … yes, thank you TK!

There isn’t a factory reset function yet. I’ll probably add one at some point though… mostly so people can auto-calibrate the temperature sensor. The idea is to hold the e-switch and then tighten the tailcap to connect power, then keep holding for a few seconds to confirm a reset is desired. Then it should reset all config values and calibrate the current temperature based on the assumption that the light is about 21 C.

I took a quick stab at it last month for the FW3A, but it’s trickier there because it physically can’t have the button pressed until after power is connected.

…. thanks ToyKeeper, I’ll give it a go.

edit: 21 Celsius = 69.8 Degree Fahrenheit

Correct I compared them. The clear anodized version has small chamfers on the fins whereas the earlier colored versions have sharp edges. Guess they listened to your request.

:+1: +1

The big blob of solder on the driver springs of my two lights costs >1.5mm of spring compression, maybe 2mm on one of them
.
Edit: (that’s after I nipped off what was above the top of the springs)

Make sure the solder blob is only sticking to the top coil. If it sticks to the top and 2nd coil and keeps them from compressing that could cost you some space. Press on the spring with your finger, it needs to go about half way down. If it doesn’t make sure the bypass wire is able to go into the driver hole when pressed. If it binds up/is kinked that could be an issue too.

Why solder blob the spring at all. My PL47 has one and it does use up a couple of mm of precious space.

I have an E07 on the way. So far four ROT66 and one PL47 in the armory.

A bit more output. I agree though factory spring bypass is risky. They already use high current springs so it’s probably a smallish gain for a lot of risk with battery fitment and risk of breaking.

I have a clear and i look at the deges of the fins and the edge is machined flat on the edge. So the edge on mine is great. Feels like a rounded edge