I have around 20pcs of B35AM and AR and they can sustain 1000lm without a sweat. Better find one and try so you’ll see how underpowered looks this initail video…
Hank's rating is 1400 lumens with the B35AM. Video shows 3.6 amps from a boost driver for a 6V LED, looks like 1650 at start, so maybe ~1500 at 30 secs. The light is 120 mm long, 40 mm head - nothing at all very big, think of it as a BLF/Eagle X6 but little shorter, or an Astrolux EC01 but slightly larger head diameter.
My immediate question is why limited to 3.6 A? Can the driver take 4 amps?
In my builds B35Am at 6V/4A turns a lot rosier than realy is so it’s on a max driving limit. Sosetting it on 3.6A is very good idea. Only stepdown is a minus
Cool! Sounds like the R&D has already been done on these LED's. Not clear from Hank's listing, but looks like the output binning varies based on the tint - lower tint, lower output. E700, E800, E900, E1200 shown in the store listing https://www.eurekatronix.com/product-page/nichia-b35ax?
So the 3500K is E700, 4000K is E800, 5000K is E900, etc.
Page 4 has the lumens outputs at 1.4 amps. Hhmm, might have to re-consider 3500K. 4000K jumps up to the next output bin, roughly 200 lumens more I'm guessing for 3.6 amps.
Sounds good to me. I typically use lights like this for walking the trails at night, and I usually stick between 5-20 lumens. Just enough to see down the trail without ruining my night vision.
My current go-to is a D80v2 with 219b and a 2A max regulated driver. The B35AM 3500K will probably more than double the max output of my D80v2.
Kaidomain. I wouldn’t exactly call their $24 XHP35 C8 a serious competitor to the DM11 though.
I think a better question is what does compete with the DM11/B35A? Perhaps the Acebeam E70/FC40? That’s the same price. The Zebralight SC700d? That’s considerably more expensive.
“the light was calibrated but I did not adjust the thermal limit” - direct quote from the video
He did calibrate the temperature sensor. He just didn’t change the max temperature it can reach before stepping down. Those are two different settings.
I think this is the most relevant way to do a runtime test, since 45C is both the stock thermal setting, and a reasonable temperature to still be able to hold onto the light without gloves.
I know what he said but since FW3A release there was a strong recomendation to set 60deg max temp. If you run it at this low value then why going for this not so pocket friendly item. Convoy S21A with 6V/3A driver and B35Am fits better to your need and sleeps into the pocket real nice.
So i hope Wad will adjust those settings to more apropriate values for this big “mid range” thrower and so shy 45
Correct, higher CCT LED has less phosphor and lets more blue light through. Fluorescence isn’t nearly 100% efficient so the more excitation light is converted to longer wavelengths, the less light is output overall.