Yes. Yes… tange is junk… he know it too… he sent me a replacement. It died… the good thing is he will refund 100%.
One thing I’m interested to find out is how the runtime graph for the D4S compares with the E07. I would presume when set to a similar thermal threshold, the E07 being hotter (more LEDs) will stepdown faster — but when it steps down, around how many lumens will that level be? (I remember reading about the Fireflies ROT66 can have around 600-700 lumens for a relatively long time). How about the D4S and the E07?
d_t_a, you should look for regulated lights for run time, like the UT02 or Lumintop ODL20 (essentially same light).
Our FET driven lights are about max output and as such, they are brightest at full charge and dim as the cell dies, not conducive to lengthy run times at any particular output level. When Comfychair started cramming the big 07N02 onto Q-Lite drivers it was all about more power, our FET drivers decended from those early experiments, with MattAus and Alex largely being the developers switching us over from the 7135 regulation chip. I built my share of the early experiments and truly don’t miss stacking chips for more power.
These Fireflies lights use the latest iterations of that early work, at the heart of these drivers it’s still all about maximum output although the plus one style brings some efficiency into the picture… sustained max output can be adjusted by once again stacking chips to raise the ceiling on the plus one channel… provided of course that access can be gained to the driver.
is there a coupon for the ff site? i would like to order from them directly.
E07FMGB
That code doesnt work no more…
Can anyone comment on battery choice for the 219B option E07? Is it still best to stay with a 10 A battery like the Samsung 50E as was recommended for the 219B version of the PL47 or do the extra emitters actually need a higher max Amp battery to get the best turbo output without overdriving the 219B’s?
Also, is the battery tube a bit longer to fit Samsung 50E and longer batteries?
I’ve ordered a Samsung 50E for my 219B E07, but see this thread for why I’m worried it will be a tight fit.
I can confirm the Samsung 50E cell fits fine in both my PL47’s. I just ordered my E07 so dont know about that one yet. I have a Efest 3700mah 35a waiting for the E07. The Efest seems the exact same size as the 50E.
I just received my E07 order. I quickly tested a XP-L HI 3A v2 with the Maukka calibrated TA lumen tube and got 6,800 turn on lumens. I’m guessing a v3 XP-L HI will make 7,500, which is really amazing for the small size. It is smaller than I imagined and I love the heat fins. The hotspot is very round and huge. This will definitely be my new pocketable EDC.
I’ll do more extensive later on all my units when I have time. In the meantime, has anyone found the ideal battery for the 219B version?
6800, nice! What cell were you using?
Probably a 30T.
30Ts can output massive amounts of power.
Fireflies just removed the option on their website to purchase 30T's with the E07. I ordered mine with a 40T about a month ago. Will be interesting how bright it will be with that battery when it finally arrives.
Did you get your PL47 already? I didn’t 
Never ordered a PL47, just the E07 and the tracking number doesn't show up anywhere so it may be a long wait.
Just ordered the E07, whats the best 21700 to get? The Samsung 40t? 30T? Or use the Adapter with A Sony VTC5A??? Thanks guys.
XP-L HI and SST-20 5000k/6500k: Samsung 30T/40T.
SST-20 95CRI: Samsung 40T/Samsung 50E
Wow…that was quick, thanks i will get one of them.
QSO rewrapped Sony VTC6A. I will test with 30T later.
Please post the 30T results, thanks!