Wait….the Osram red is 2.4v so can I not use a regular 8*7135? I’ve built two with that driver for 230 lumens and all seems fine, it certainly hasn’t killed it
I’m guessing Mateminco has also used the same driver at 3 volt for their FT03 Mini model using all 5 colors
I wanted to buy M3 but ended up buying M4U mainly because of the USB charging feature (currently in shipping, hopefully will arrive in the next few weeks).
Here’s why : I had a BD06 (XML2, 26650) , it has micro-USB charging (with litter adapter attached to the side switch). It’s been very useful, I mainly used it around the house/yard.
It’s very practical for around the house, even more so for traveling, no hassle with external charger.
I took it for traveling out of town a few times and unfortunately I lost/misplaced it. I bought M4U as a replacement for my BD06.
M3 with USB-C charging + M21C-U’s = super awesome. When will it be launched?
Another suggestion Simon, while you are at it, it’s also gonna be awesome to update the S2+ , or make something as a more modern version of S2+ .
IMO :
S11 seems to have a very beautiful body design style for a tube light .
S2+ has the most practical size for EDC .
Convoy’s new best EDC flashlight = S2+’s size with S11’s body style, with USB-C charging and M21C-U’s UI , XPL HI / SST40 / LH351D ~4500K .
Edit/rewording :
Convoy S11 mini (similar size of S2+) ,
with USB-C charging + M21C-U’s UI.
Basically the driver will create even more heat than your other higher forward voltage builds and be less efficient to boot. It will still work though.
It made me check the datasheet which specifies 3.3A pulse, I’m driving them at 3.15A so hopefully they will be okay or should I bring them down to 2.450 with 7*7135?
I measured
2.8A - 210
3.15A - 240
3.5A - 250
4.2A - 230
Certainly shows Maxtoch claiming 600 lumens is a big overstatement.
I would compare the pulse current of white ones vs what other users tested and use a similar current relative to that since no one has formally tested red.