Are there any flashlights that can sustain 9-12k lumens output for 5 minutes?

[2100]

@mattheww1950

The problem is neither the battery or the emitter. If you could adequately cool the emitter, what you want is easily done. Unfortunately what you want is very hard to do with any light that does not have active cooling. Nobody wants to lug around a light with enough mass to take up the heat output from a 10K lumens emitter for 10 minutes. 10K lumens you are going to have to dissipate close to 100 watts, and absent some form of active cooling, that is going to require a very large heat sink. Once you opt for active cooling such as forced air, the problem is solved with relative ease. The trouble is that moving parts are almost by definition potential single point failures, so while the LED may have a 50k hour life expectancy, there are no motors or bearings that are likely to last anywhere near that long.

@clemence

There’s a way although impractical. Most Cree high power have 200+lm/watt at low current. 12.000lm/200=60 LEDs. With all the iefficiencies and losses you can expect 70-80 watt input.
But driver and input power source are another challenge.

- Clemence

Yes i agree, hence the question that i have put up probably has 2 answers.

(1) definitely doable, Imalent and Acebeam has done it. 5 mins is relatively easy with huge amounts of 70.2 and sufficient heatsink mass in addition to passive convection cooling (relatively inefficient), so we’d need a pretty huge light.

however

(2) Is it practical, effective, efficient? Perhaps not so much, though it would work relatively “ok”. I put OK in quotes simply because different people have different expectations.
Also if we extend this further than 5 mins, we’d need active cooling. Some folks might need longer than 5 mins, some don’t.

And point (3a), the Imalents and Acebeams are $$$ lights. Since this is BLF as in Budgetlight forum, i am wondering what form factor can we wire this up as and DIY from current hosts.