[Review] Convoy L6 diode GT-FC40 90CRI

S16 FC40 and I will take both 5000K and 4000K!!!

Thanks, Mocarny, nice review !!

Thankyou , good review on this new L6 .

Runtime
I will soon add a graph showing changing of brightness, now I have the temperatures, and also the brightness at minute 10.
Temperatures:
at 2 min: 40Ā°C
in the 5th minute: 43,5Ā°C
in 10th minute: 47Ā°C
brightness in 10th minute: 1657lm

Did you ever make a runtime graph? From the info above, it appears that the light drops to 50% output after only ten minutes.

Nb

I did, and it's worth mentioning that:

1) Brightness drops after ~ 4 min, which is not the best result (but pretty common that flashlight drops brightness from Turbo quickly. After all, it is just "Turbo" which is meant to be a momentary mode), but keep in mind my measurements are done at home, when you use it outdoor, especially in cold (like at night) environment, the flashlight will sustain Turbo longer. Don't give me wrong, 4 min is not a long time, and that "longer Turbo" would be maybe 6, maybe 8 minutes.

2) Temperature increases further, after my 10 min threshold, stabilizing at 62Ā°C at the hottest spot (at the bottom of the head) - measured in 70th minute

3) This runtime is ... well, just a runtime. The flashlight got very hot, and it's impossible to hold it: 62Ā°C on the head, 55Ā°C on the battery tube, and 53Ā°C on the tailcap.

I will add that graph today :)

How is the throw comparative xhp70.2 ? I have L6 xhp70.2 :smiley:

GT FC40 Driver for Convoy L6

Boost drivers LM3481

Current sensor on the negative wire. Via an operational amplifier TLV333. Microcontroller SN8F570200A

Is that a donut hole in the white wall shots?

What is this LM3481 driver? External switch and diodeā€¦ non synchronous rectificationā€¦ ancient tech . Where did you found it? ;))

GT FC40 Driver and switch for Convoy L6

new Driver for L6

ā€ Kit (GT-FC40 + Driver + Switch) for L6 Kit (GT-FC40 + Driver + Switch) for L6 Kit (GT-FC40 + Driver ) for L6ā€:17.52ā‚¬ |Kit (GT FC40 + Fahrer + Schalter) fĆ¼r L6|Tragbare Beleuchtung Zubehƶr| - AliExpress

Ahh .OK. Its the same only without fancy electrolytic caps ;))

Can I get this in a single 26650 version?

Received almost the same flashlight today. Only difference is 4000-4500K. Havenā€™t done any proper testing yet, but I did notice an interesting effect (apart from that the FC40 emitter is frigging huge!). When you turn it off, thereā€™s an afterglow. And itā€™s not evenly distributed across the emitter, itā€™s more like a tiny snake game. Did anyone else notice this? Itā€™s quite fascinating :smiley:

PS, no I did not look into the beam, I noticed when putting it down on the floor. There was a clear circle visible on the floor. Donā€™t look into the beam, just donā€™t :wink:

May have to add this oneā€¦ for tons of output the FC40 @ 4000k has become my favorite. I have it in 3 differently sized lights and would love it in a full on thrower. My old S70 cooked it XHP70 and I am considering repairing it, not sure I will with this option.

Just used it outside for a moment (itā€™s finally dark. Yay!). Geez this thing puts out a wall of light :smiley:

Very pleasant beam as well.

I just received my Convoy L6 GT-FC40 as well and love it. At first I didnā€™t think it was as bright as expected, but this is often my reaction to most lights I receive as Iā€™m so used to my mega bright multi emitter lights. The second night out with it though is when I really was impressed wit it. For a single emitter light this thing is both a great thrower and flooder! The perfect all around light for backyard/ back acre viewing for when my pups are out late at night doing their business. Gotta keep them safe from the critters out here. Overall nice tint and very bright, but not so power hungry like some other emitters out there.

A word of caution concerning chargers. The cells need to be equally charged if you want them to last. My order included 2 Lii-50A batteries and they were not equally charged. Used a DMM to compare. So 1st thing I did was put them in a Liitokala Lii-500 4 slot charger. After it indicated done I measured again and to my horror there was roughly a 0.5V difference (4.18 vs 4.23V). Not goodā€¦

Long story short, I ended up using a single slot charger to make sure both batteries get charged to exactly the same voltage.

A different type of beamshot :wink:

Thereā€™s something very satisfying about a powerful beam and a nice spill lighting up falling snow. Makes it more immersive than usual.

Convoy M26C and M3-C have 1x 26650 and itā€™s available with GT FC40