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Sold/Expired MC-E + 18650
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donn_
Flashaholic
Can you calculate the emitter lumen output at the 3 levels?
Psychomodo
Enlightened
I'd be interested in that also
According to the spec. MC-E K bin @350mA ~400lm, @700mA~700lm.
The efficiency of MOSFET driver is ~95-99%
The Unscientific estimation of the light output from battery full should be 100%~700lm, 25%~175lm, 5%~20lm.
It must not be left it stand alone at 100%, (5% is OK) the flashlight body can't radiate the heat fast enough to the air. Your hand could help it a lot!!! If the outside temperature is cool enough, it is quite a hand warmer. Like below 50 Fahrenheit.
Otherwise, lower the level to 25% before it become too hot.
The efficiency of MOSFET driver is ~95-99%
The Unscientific estimation of the light output from battery full should be 100%~700lm, 25%~175lm, 5%~20lm.
It must not be left it stand alone at 100%, (5% is OK) the flashlight body can't radiate the heat fast enough to the air. Your hand could help it a lot!!! If the outside temperature is cool enough, it is quite a hand warmer. Like below 50 Fahrenheit.
Otherwise, lower the level to 25% before it become too hot.
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Alan B
Flashlight Enthusiast
Sounds mostly reasonable, but a bit confusing. This is basically a PWM dimmer on a direct drive LED. The current readings don't agree with the percentages (the low current is less than 1% of the max current). Measuring low duty cycle PWM with most meters produces a large error, so that might be the reason. I suspect the light outputs are the more accurate info, is that right?
I like the range of outputs. With a light this bright it might make sense to have four levels, but at least these are spaced well apart instead of some lights where the levels are too close to each other. This light appears to have a full blast (that gets hot), a medium that is almost as bright as other lights "high", but it can handle the heat load, and a "Low" that is plenty of light for most tasks and a really long runtime. It is missing a "really low" like a couple of a lumens, but that is not too bad. I also like that it doesn't bother with strobe, SOS. Nice clean interface.
Apparently it has mode memory. What is the progression of the levels?
Looking forward to it,
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I adjust the distance of the MC-E (whole light) to reach index 1000 to light meter when 100% and took 25%, 5% reading.
The index result : 1000, 245, 30. It is for reference only not lumens.
The less power feed to LED, the more efficiency can get from it. It explain why less than 1% of the max current can get 3% of light output.
The offical data show 700mA gain less lumens compare to 350mA too.
This is the nature of LED.
100%, 25%, 5%, 100%, 25%, 5%...........
"On" more than 2 sec., next "On" will be same level.
The index result : 1000, 245, 30. It is for reference only not lumens.
The less power feed to LED, the more efficiency can get from it. It explain why less than 1% of the max current can get 3% of light output.
The offical data show 700mA gain less lumens compare to 350mA too.
This is the nature of LED.
100%, 25%, 5%, 100%, 25%, 5%...........
"On" more than 2 sec., next "On" will be same level.
I'll take one in stainless, OP reflector, black switch cover. Please PM your paypal address. Thanks,
bill
bill
scout24
Flashaholic
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Are those lumen and runtime numbers with protected or unprotected cells? Are you making more?
Scout24
Are those lumen and runtime numbers with protected or unprotected cells? Are you making more?
Scout24
Gaius, no special, 3.7V is OK. Protected 3.7V should be better for safety.
Thanks william lafferty,
martonic, PWM frequency is 4MHz.
Scout24, it is estimation only, first post was updated to avoid confusing.
Thanks JasonH.
Attention please:
I just found some issue with driver.
When using the mid level (25%), sometime it has slightly "flick" at the beginning.
After a few minus running, the "flick" will disperse.
The High (100%) & Low (5%) work without any problem.
Don't worry, I will take care of it.
Thanks william lafferty,
martonic, PWM frequency is 4MHz.
Scout24, it is estimation only, first post was updated to avoid confusing.
Thanks JasonH.
Attention please:
I just found some issue with driver.
When using the mid level (25%), sometime it has slightly "flick" at the beginning.
After a few minus running, the "flick" will disperse.
The High (100%) & Low (5%) work without any problem.
Don't worry, I will take care of it.
Please put me on list for 2nd run of HA w/OP (will also need one or two MAG rings - I need to check).
When do you need paypal? Please let me know.
THanks
When do you need paypal? Please let me know.
THanks
donn_
Flashaholic
The SS version arrived today, and is quite a barnburner on high! Excellent beam and really nice heft to the light.
So far, absolutely no sign of flicker at any level.
I'm running an 18650 Molicell, and it seems to be working fine. An 18650 A123 has a little less output, I guess due to lower voltage, but it may be my cell of choice. High is still plenty bright, and the cell can be recharged in about 15 minutes.
:thanks:
So far, absolutely no sign of flicker at any level.
I'm running an 18650 Molicell, and it seems to be working fine. An 18650 A123 has a little less output, I guess due to lower voltage, but it may be my cell of choice. High is still plenty bright, and the cell can be recharged in about 15 minutes.
:thanks:
Alan B
Flashlight Enthusiast
Received mine today.
Great olive finish. Lots of Lumens. Clean floody pattern has slight dark cross in the center, large hotspot, bright spill, quite nice.
Some flickering on the mid setting is noticeable on mine. This on a fully charged well rested 18650 protected Li-Ion. I didn't run it long enough yet to have the flicker stop, perhaps this is just a fully charged phenomena, or possibly temperature related? The A123 cell at a slightly lower voltage might not do it at all (if it is voltage related).
The head warms up quickly on high, I didn't run it long enough to get hot, but it did not take long so the thermal conduction into the head is good. The body did not warm much. Again the A123 may be a good choice since it will lower the heat slightly as well.
On medium the head gets slightly warm. Great compromise setting for output, runtime and heat. Completely overpowers the max output of a Photon Proton Pro in lumens at this medium setting.
Overall a very nice light. :thumbsup:
This would make a great top of the pocket carry light if it had a good clip. Is anything like that available?
Great olive finish. Lots of Lumens. Clean floody pattern has slight dark cross in the center, large hotspot, bright spill, quite nice.
Some flickering on the mid setting is noticeable on mine. This on a fully charged well rested 18650 protected Li-Ion. I didn't run it long enough yet to have the flicker stop, perhaps this is just a fully charged phenomena, or possibly temperature related? The A123 cell at a slightly lower voltage might not do it at all (if it is voltage related).
The head warms up quickly on high, I didn't run it long enough to get hot, but it did not take long so the thermal conduction into the head is good. The body did not warm much. Again the A123 may be a good choice since it will lower the heat slightly as well.
On medium the head gets slightly warm. Great compromise setting for output, runtime and heat. Completely overpowers the max output of a Photon Proton Pro in lumens at this medium setting.
Overall a very nice light. :thumbsup:
This would make a great top of the pocket carry light if it had a good clip. Is anything like that available?
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