Why do you need turbo that lasts a few seconds before stepping down?

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xtarflashlight
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Why do you need turbo that lasts a few seconds before stepping down?

You may have seen many high lumen flashlights, getting thousand lumens at turbo mode but only produce max output for a very short period. For example, one claims 10000 lumens at turbo mode, lasting for 10s and then stepping down to a lower output. So why set up like this?

As LEDs produce heat, a handheld flashlight could only dissipate a limited amount of heat. Especially on turbo modes, it generates a lot of heat, enough to damage the electronics and even burn the hands, so it’s common for high output flashlights to step down before overheating. And it’s also a way about battery conservation when you are using the flashlight outside.

Some people think a few seconds of the burst just doesn’t seem very useful. While many users tell turbo mode is useful for quickly checking things in the distance, when the standard high mode may not provide enough light. Are you willing to buy a light that is super bright but only has a limited run time at turbo brightness? How do you usually use the turbo mode?

sp5it
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I don’t need it, manufacturers do for false advertising.
CRI and constant brightness till battery deplete I care.
Mike

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tech
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Why do sports cars have a vmax of 200mph? Nobody would need it IRL.
To see what is possible, to market it the right way, so we can brag on BLF what we built.

My more expensive lights can do thousands of lumens, I don’t use them ever in that setting.

richbuff
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For me, the question of choosing a flashlight who’s highest mode will run for hours and hours and hours, versus a flashlight whose highest mode will run only for a few seconds, is a matter of personality. That’s why I like both kinds.

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mortuus
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idk ? for fun ? Big Smile

...where Frugal meets with Flashlight!

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zoulas
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Lights are improving tremendously so the days of 5 second turbo are almost behind us. The new SP35 for example implements spectacular ATR that is barely noticeable.

TimMc
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Quote:
Are you willing to buy a light that is super bright but only has a limited run time at turbo brightness?

Yes. Big Smile

I have an Emisar D4V2 Sand with XPL-HI V2 5D 4000k. ~18A with a Vapcell S30 on Turbo for a few seconds.

I bought another Emisar D4V2 Cyan with XPL-HI V3 3A 5000K last week. Facepalm

They’re fun!

Some people get annoyed at the short runtime on Turbo… get a bigger flashlight! Silly

TIFisher
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It’s the “WOW” factor. Practicality comes in sub-turbo modes or ramping capability. Nonetheless, it’s nice to have mega-tons of light to scare away the bogeyman, or punch a 400 meter hole in the night if so needed or desired. I just know that every time I double tap the go button on a barn burner light, there’s a big ‘ol smile on my face….and it tends to last longer than a turbo blast.

zoulas
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Its the same thing with megapixels in cameras. The perceived idea is the higher the number the better. Fact of the matter is you would not buy a new 5MP camera today. There was one Imalent light I don’t recall the model where it did 100K lumens on turbo for something like two seconds. People don’t see the two seconds, they see the 100K lumens. Human nature I guess.

Kwispelhond
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Those super-bright lights are for fun, too big and heavy for carry or camping anyway. So I have a 8000lm flashlight and it falls back to 5000lm after some time, that makes it still pretty bright even when fallen back a little so I don’t care that much. For practical use I really don’t need that much light and don’t like to carry 434gr. of flashlight for a longer time so I have other lights for practical use.

adam7027
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Flashlight manufacturers should advertise their lights like this (just an example):
4000lm max output for 60 seconds (@ 25°C ambient temperature, zero wind speed /also mentioning battery, which was used during measurement/)
700lm sustainable output (same environment specs, output after temperature regulation settles).

This would speak clear enough for most of the users.

Anyway, I also find, that flashlights with turbo lasting only a few seconds are impractical, and an annoyance to use. From cold state, I need turbo to last at least 60 seconds – this is enough for scanning around briefly for identifying important objects in my surroundings (but for some use cases, I would prefer it to last several minutes, even if it isn’t so high level).

wle
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i use it about every day

it;s for when i need to see as far as possible, if only for a few seconds

why would you not want that, no matter how bright it can run all day ?
- in any design, there is usually more light to be had, if it doesn;t have to run long

i’ll take it

i also do not like giant heavy lights that do not go in a pocket, it;s a good compromise for me

600 lumens all the time,up to 1600 for 10 sec

it beats either big heavy lights, or NO turbo

but that is just me

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CR888
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I’m probably not the only person sucked into buying a light due to max lumen claims on the packed. I’m pretty sure I won’t be the last. Manufacturers are in the business of selling lights. They also don’t tell you next too the 1 month runtime claim that it’s on moonlight mode at 1lm. Big spec numbers sell lights.

CR888

CrashOne
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We don’t. We need as much sustainable lumens in the smalles body possible. Since that is not possible, we make concession Smile

raccoon city
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CrashOne wrote:

We don't. We need as much sustainable lumens in the smalles body possible.

I don't know if I need that, but I do want that.  :THUMBS-UP:

I prefer turbo to last at least a few minutes, even if that means turbo isn't nearly as bright.

That is more useful to me than super bright turbo for only ten seconds.

mortuus
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like my convoy l6 can do highest turbo 3000 lumens something nonstop no termal stepdown really until batteries wear down first.. but can i fit the light in my pockets ? not realy… but a fw3a and similar that can punch out almost that evne for short time is fun xd

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zoulas
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You need to look at the mass of the light, something like the fw3a can’t possibly put out high power for too long. You can tell this by just looking at it.

Dalamar
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I prefer cri (r9/r12). I sometimes use turbo to see far, but since I’m trying to make perfect long range shots, turbo seldom lasts long enough.

In fact, most lights can’t even sustain “high” which is ridiculous. All lights should have a larger mass and efficient buck driver imo

I only like high CRI. Collection:

Fireflies NOV-MU 21 4500k E21A

Fireflies ROT66 219B SW45 D220

Fireflies E07 Copper 219B SW45k? (odd/higher lumen bin with lower r9 and higher cct?)

Fireflies E07 219B SW45k

Fireflies E07x Pro sst20 FA4 4000k (mail)

 

Varmint removal:

Convoy M21A C8 ver SST20 4000k (5a)

Convoy S2+ SST20 4000k  FB4 (3200ma)

Memes:

BLF GT94

Emisar D18 660nm SST20 (mail)

 

 

CRI test dump https://drive.google.com/drive/folders/1kcl_uOhgfpR4RSsa8F4b-UUVP9mkL6Cr...

Cochise334ever
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Max output..Turbo whatever you want to call it.I have NO use for lights from factory whose drivers only sustain Turbo for 10, 20 30 seconds or whatever.

I have a dozen modified lights that sustain Turbo for awhile.Basically they sustain the highest output possible in direct proportion of battery depletion. The output loss is not that noticeable until 10, 15. 20 minutes later until battery depletion.

Those are the lights I like.In addition my Hand determines the step down in warmer months, Not these bursts/ timed step downs that are for amateurs! Thumbs Up

wle
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Cochise334ever wrote:
Max output..Turbo whatever you want to call it.I have NO use for lights from factory whose drivers only sustain Turbo for 10, 20 30 seconds or whatever.

I have a dozen modified lights that sustain Turbo for awhile.Basically they sustain the highest output possible in direct proportion of battery depletion. The output loss is not that noticeable until 10, 15. 20 minutes later until battery depletion.

Those are the lights I like.In addition my Hand determines the step down in warmer months, Not these bursts/ timed step downs that are for amateurs! Thumbs Up

Good thing that you have expensive, large and heavy alternatives!!

"You never have the wind with you - it's either against you, or you're having a good day."
    Daniel Behrman, "The Man Who Loved Bicycles".
It never gets easy, you just go faster.   
-Greg Lemond.
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Sirstinky
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Well, in my opinion and experience turbo is actually pretty useful when you need that extra light, even if it doesn’t last. It goes without sayibg that a small host with minimal heatsinking won’t hold high output for long until throttling back. A big light with lots of thermal mass or active cooling will be brighter longer also. As was mentioned, thermal management on the UI side has gotten continously better also.

CR888
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I say we get rid of turbo & go back to old single glass light bulbs. At least you knew you flashlight was consistent & sustainable albeit very low output. Power would throttle down as the cells went flat. Who’s in?

CR888

wle
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"You never have the wind with you - it's either against you, or you're having a good day."
    Daniel Behrman, "The Man Who Loved Bicycles".
It never gets easy, you just go faster.   
-Greg Lemond.
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jeff51
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A lot depends on how fast it steps down. A few seconds is useless.
But something like a Streamlight Protac HL 5-X

Gives a little extra for a short time. Maybe all ya’ need for a quick peek.

Of the late lamented Tacklife.

But make no mistake, I would sure like a mode that gave me the maximum brightness sustainable without stepdown.
Allowing for external conditions. Winter in Michigan vs Summer in Texas.

All the Best,
Jeff

turkeydance
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“Are you willing to buy a light that is super bright but only has a limited run time at turbo brightness?”

yes.
it was the only style available
at the time which i could afford.

“How do you usually use the turbo mode?”

illuminating trespassers.
human and animal.

pennzy
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I don’t know how it does it but my Convoy M3-C sustains the max setting for a long time.

Frostcream
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I find turbo to be extremely useful in many scenarios.

That said, if I had no use for it, I’d just simply not use it. I’ll take the option for a heavy slam of extra light any day though. I prefer options.

If turbo didn’t exist, I’d definitely have stayed a muggle.

ArturoSC1
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Why do you need to be able to run if you can only hold 50 or 100 meters at the top? Surely you don't run every day, but do you want to be able to run?

Helios azimuth
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I scan at an appropriate throw for the terrain until eyes glow in the distance. Then double click to see what they belong to. Very useful and practical for those who do not live in a city.

Notmyrealname
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So I asked my wife if she would prefer a small one that had very high output for a few seconds or a bigger one that sustained a lower output for much longer. She thought about it and asked “we’re talking about flashlights right”?.

I feel sorry for people who don't have a hobby or interest to escape to.

NeutralFan
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Turbo with temperature regulation is fine by me, even if it’s short lived. I don’t like timed turbo since the flashlight can easily be turned on again into turbo and can cause LED damage.

Some temperature regulation is better than others. ZebraLight is awesome with so many step downs that it’s barely noticeable. And it’s very quick to go brighter again if you disperse the heat like holding the flashlight tightly in your hand. Others are slow to respond and have very abrupt step downs, but better than nothing.

If you want more lumens longer, then you will need to get a bigger flashlight. Simple physics. I usually use smaller EDCs (like an S2+), but when I use my “big” Meteor M43, I’m always impressed with how well it can absorb and disperse heat to allow so many lumens for a long time!

I’d rather use my flashlight around the house than turn on the lights.

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