Which 26650s are recommended for the L6 GT-FC40? Is there is min/max length?
Vapcell doesn’t make batteries so they come from OEMs too and for all we know they might be QB seconds… if 26800 is a good battery that’s awesome but feels weird to trash Chinese OEMs in one breath and ask for battery tubes for a singular battery made by a Chinese OEM in the very next.
FWIW I have mixed reviews about Vapcell myself I don’t care about them.
I’ve purchased a few of these as bare emitters from Simon’s store. They are not high CRI.
6800mAh 26800 is equal in density to 5500mAh 26650 or ~2650mAh 18650, Chinese manufacturers make millions of the latter, it’s not a surprise they are consistent, they are just regular Li-Ion.
In fact, the prices of the two are the same. High color rendering LEDs are not necessarily more expensive than ordinary color rendering.
68-70mm with top head
max input 8amps.
maybe I’m more sensitive but I notice the difference in light.
Limit the current at ~ 70% allows you to maintain maximum level for longer and less heat produced.
For the New T2 driver I wish to have 0.2~ 0.5% mode.
Also,you consider to add button top options for yours others drivers instead spring?
Close mode groupings would make much sense because when one wants just sufficient amount of light for a situation can be better adjusted to have the ideal battery runtime.
It would be even meaningful to include a few mode groups with more than 5 levels, like these:
1% 2.5% 6% 12.5% 25% 50% 100%
2.5% 4% 6.4% 10% 16% 25% 40% 64% 100% (this could be a very good bike light driver mode group, and could be a good upgrade to the older 7-mode bike driver with 10-20-30-40-60-80-100% modes)
I can notice the difference well between a level and 1.6 times a level (like the 40% to 64% and the 64% to 100% change mentioned above)
I second this if there is enough space in the driver, the original modes were chosen for 3A and keeping firmware size below 1024 bytes, now there are drivers with 5, 6 and 8A, it makes sense to have more levels to cover a larger range.
0.2~0.5% mode is achievable, but due to the significant price increase of global chips, I cannot purchase high-precision chips. I can make samples, but I cannot mass produce them.
if that so ,i think i should make stepless mode directly
Simon,
is new M12C FC40 12group driver only available?
Crumpled reflector? That doesn’t sound good at all. I assume that’s supposed to be orange peel.
Does this emitter actually produce a good beam with a smooth reflector? I thought the big multi die emitters needed an OP reflector to make the beam look decent. Or is that just the Cree emitters?
The M21C FC40 looks awesome. How many lumens would be expected in 100% and 35% modes?
Do you just need the driver for FC40?
yes ,crumpled means orange peel.
Russian flashlight enthusiasts are used to calling it “crumpled”. Another reason is that the two words of orange peel have too many characters, and the system does not allow me to fill in such a long word.
Even if the smooth reflector is used, the light spot is very uniform.
Using orange peel reflector, the light spot will be more uniform.
It’s not CREE LED, it’s made by GETIAN company
100% 2000-2500LM
35% 800-1000LM
Hello Simon,
Thanks for adding M21C GT-FC40, OP/crumpled reflector with the 4000-4500K CCT seems to be a very suitable choice for me.
Just asking because I am curious. Once you mentioned, that you will design a few more flashlights with TIR lens. Did you find suitable TIR lens models for those flashlights?
Yes, 3pcs
The existing TIR lenses on the market are not universal in size.
Either I let the factory develop molds and design unique TIR lenses, which will cost more. Either design a new flashlight host with existing TIR lens, and design a new MCPCB.
I prefer the second option.