Received the Amazon light today, exact same as Astrolux, price is now $109.95.
That’s going to be a slow sale at $109.00 when the group buy is still going on.
lower price on banggood https://www.banggood.com/Astrolux-MF-01-18x-XP-G3Nichia-219C-12000LM-Super-Bright-LED-Flashlight-18650-p-1165131.html?rmmds=home-mid-topicProduct4&cur_warehouse=CN
How are your MF01 keeping?I heard some quality issues, some driver problems?
Coupon please
it wont ship until april 3 ?
Processing time:Expected on April 3, 2018
April 3, but some time it can be a few days earlier.
Well that was quite early
If you could test the runtime on high and measure lumens/temperature that’ll be amazing. Just ordered a nichia one a few days ago. I’m really curious to know if V2 steps down on high as there doesn’t seem to be any runtime graphs of it.
Runtime on high of 219C V2, so that is about 3000 lumens right? Complete runtime test will be done indoors at room temperature, so there is good chance it will step down. Is this what you want to have tested? With Samsung 30Q?
[quote=hIKARInoob]
Yes, with head temperature measured after 10-30 minutes if possible.
[quote=Th558]
Sure. I’ll probably have time tomorrow, so you should see results within two days.
I can also do with cooling if you want. I assume you don’t want the total run time until batteries are depleted; battery of my lux meter was about to die as well so I had to stop anyway.
I've never noticed a graph like that before...
It looks like 100% Relative Lux = 50°C
and 50% Relative Lux = 25°C
See the problem there?
The Y-Axis represents two different things.
It’s a little bit more puzzling indeed. The black line is relative lux, so use left Y-axis. Red line is temperature, so use right Y-axis. The common variable is time.
Nice work! I did actually want it till the cells are almost empty. How long do you think it would’ve run. Maybe another 70 minutes? And was the head actually that cool. If that temperature reading is right this has a lot more potential.
Well steady state is about 1500 lumens, and after 70 minutes cells were at 3.82V, so only a drop of 0.35V. So it would take definitely a lot more time than 70 minutes for fully depleted cells.
But the real run time would only be useful if you leave the light unattended. And if you intend to do so, then I see no reason to use level 4 of ~3000 lumens, as it’s going to step down anyway after 10 minutes.
If you really want the actual run time until battery depletion I can redo the test tomorrow.
I would love see the full test. my guess is 3:30 mins. Also is the lower mode 1650 or less?
Did a complete run time test this time. I just checked a couple of critical check points to see whether it behaved similarly as yesterday, and this is the case.
Step down occurred at the 10 minute mark to a value about 55% of initial value. After the 70 minute mark output, and therefore temperature as well, remained as good as constant; there was just a marginal increase in output resulting in a max temperature of 50 degrees C, which is just 2 degrees C higher than what was recorded yesterday in that 70 minute interval.
Low voltage protection kicked in at 3 hours and 10 minutes, with cell voltage of 2.83V.
The estimate output levels of the MF01 219C V2 are:
Level 1: ~10 lumen
Level 2: 600 lumen
Level 3: 1100 lumen
Level 4: 3000 lumen
Level 5: 9000 lumen (with full cells)
I believe thermal management is semi active, meaning it steps down to a fixed value of around 1500 lumens. Indoors this results in a maximum temperature of max 50C (with 20C ambient temperature), which is a good and safe setting.
Outdoors on the other hand, if the light steps down it will step down too aggressively to an unnecessary low value, as the light should be able to handle more output without over heating. However, my experience a couple of months ago is that the light simply does not step down at the 3000 lumen level as temperature was always sufficiently low.
Wow this thing is heavy! Haven’t even charged the batteries yet and it’s still so bright. There’s a bit of a problem through. One of the LEDs is purplish and isn’t as bright as the others. Can’t be asked to send it all the way back to China. Just wanna know if it’s safe to use.
!http://i.imgur.com/u0aG1ej.jpg
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