Interested
It’s hard to say for sure. It’s possible that Mateminco might redesign it to be 4P instead of 2S2P, but I don’t really think that will happen. It’s too late in the project to make such a big change, and the light seems to generally work fine as-is. It’s just not as efficient as it could be.
There’s some odd behavior on the driver, like unstable power levels when the battery gets low, but that doesn’t seem to really cause problems. The most noticeable weirdness is a pretty sudden tint shift when the FET channel kicks in… but I’ve managed to smooth that out a bit to make it less noticeable.
As long as the battery carrier is tight and the contacts are clean, it seems to work reasonably well.
The beam is a lot like a Meteor — a big wide hotspot without much else. If you like that kind of beam, you’ll probably like the MF01S. It’s bigger than a Meteor though, and makes more light. I measured 13,900 lm with SST-20 4000K. The most I’ve ever been able to get out of a Meteor was a bit under 6000 lm.
People will probably enjoy the aux LEDs too. Lexel did a good job with those. It has a rainbow of colors, and the colors fade away as the battery gets low.
Was 13900 with the 95cri LEDs?
Interested… if FD2 becomes a reality.
I think so, but I’m not totally sure what LEDs are in this.
You should have the FD2 LED’s I think. Although if it is an early prototype it is possible it is the FB4.
Unless you got sent one of the CW 70 cri versions for some reason? I asked them to send you the 95cri LED’s though.
Interested
Interested
Interested depending on price.
Interested!
Please add me to the list. Thanks!
I’m interested in the group buy
ASTROLUX said that it has been manufactured in batches, and will be on sale in the middle of next month.
Please add me to the GB list. Thank you.
Yeah, I got the light to behave thermally, so I think it should be almost ready to buy. Here’s an example of a thermal test with the maximum temperature set pretty low to make things harder for the thermal algorithm:
Given the style of power channels used, this result is pretty close to optimal.
Which emitter is it using? The sustainable lumens seems low if it is xpl hi or sst 20 70cri. The heat shedding of this version is significantly improved by TA from the original MF01 so should do better than this.
Seems kinda disappointing tbh. Efficiency could be better. It’s set to only 45 degrees so I guess it could sustain higher output.
It’s probably using the SST-20 95CRI emitter, as it seems inefficient.
I think this is SST-20 4000K 95CRI, which runs hotter and less bright than the lower-CRI versions. Just checked again, and it’s definitely around 4000K, so it’s not the 5000K 70CRI version.
Yes, you should have the 4000k FD2 bin LED’s if they did as I asked lol.
This high-CRI version is only supposed to make about 10,000 or 11,000 lumens, but I measured it at 13,900 lm at start with a set of just-charged 30Q cells.
This was measured with an integrating tube, so it’s not as accurate as a sphere… but it’s pretty close. I used some biased diffuser sheets to improve the integration qualities, then calibrated it to match reference lights from maukka. The sheets force the light to spread out and bounce around inside, so it’s less favorable to throwy lights. It also acts as sort of like one-way valves, which reduces the impact of the entry point and initial bend, so it gets more consistent readings for a wider variety of lights. But it’s still not as good as a sphere.
Anyway, I think it actually could make 14,000 lumens with some high-amp cells like 25R. And more, when using lower-CRI emitters. Just not for very long, because it gets hot fast.