100w led flashlight.

[birdman3131]

I am looking at buying this LED and this battery. I will then mount the led onto a computer heatsink with fan.

My questions are:
Do I need a current limiter and where would I find one for 36V@3.5A?
What sort of reflector and lens do I need?
Would y'all recommend a different battery?

[COAST]

why not an SST-90?

[birdman3131]

why not an SST-90?

How would it be better?

[bshanahan14rulz]

lower voltage but higher amps, one large single chip instead of just a bunch of little ones, around 2000-3000lm output, 20W consumed. 5 of these would use the same 100W, but put out 10000-15000lm instead of 8000.

The one you picked has simplicity going for it, though. Slap LED plate onto heatsink, add battery and current limiting, and blast away.

[warmurf]

Why not see if you can get ahold of a CSM-360 LED. It's basically 4 SST-90 together like an MCE. I've got one in a Freilong light and it rocks! It's meant to be rated at 100W and 5000+ lumens. I'd say it close to up there, but it would be fantastic to see one of these 360s fully ramped up in a custom!

[MikeAusC]

. . . . Do I need a current limiter and where would I find one for 36V@3.5A? . . . . .

I have added a dollar of parts to a $11 120 watt 12v-in Boost Converter that gives it true Constant Current output. I'm finishing the 3-stage brightness control and then I'll publish the details here.

[mash.m]

not realy a flashlight, but a portable working light with a csm-360:

http://www.candlepowerforums.com/vb/...th-one-CSM-360

i will ever prefer the csm-360 instead of the multi emitter led´s. easyer to focus and the build quality is a lot better. if you have a chance then use a bridgelux emitter and not this noname array. the bridgelux are still cheap an some have a very good cri.

and here i real flashlight with a multi-emitter array:
http://www.candlepowerforums.com/vb/...umen-many-pics

it is realy hard to get a boost driver for such high voltages at these currents.

markus

[mash.m]

are you shure that you wan the pb battery? they are realy heavy-weight.

what is your goal for this setup? i portable working light like mine or a real flashlight like the bridgelux mod?

markus

[fivemega]

lower voltage but higher amps, one large single chip instead of just a bunch of little ones, around 2000-3000lm output, 20W consumed. 5 of these would use the same 100W, but put out 10000-15000lm instead of 8000.

100 watts of parallel LEDs powered by a 3.7 volt battery requires about 28 Amps of switch but same power of LED (100W) powered by 36 volts requires only 3 Amps which is easier to switch, easier to wirings easier charging and less power loss..

What sort of reflector and lens do I need?

Keep in mind that don't expect to have anarrow beam thrower.

[JLumens]

i got some my parts from dx for a 8000 lume light, but the pos and neg are on the same side cant tell wich "wing" is neg or pos.
hoping to do a test run on 8 18650 "pcm" to keep it at 3 amps refector SKU 39963 at dx

[kamikazinyc]

how can i put it in my car headlight?

[Toaster79]

You don't! It's illegal!

[alpg88]

how can i put it in my car headlight?

lol ever had oncoming truckers throw a bunch of nuts and bolts at you, on the road?? you will if you drive with that thing on.