This is the demonstration of powering 100W/34V  LED  from 12V power-supply .

there are 5 parts
1, 12V/7.4Ah UPS sealed lead acid battery

2, DC-DC step up converter [12v to 34V boost converter ]

3, constant current driver [ not include ]
   low cost LED driver from

4, LED 100w /34V with sufficient heat sink [ Processor heat sink  is a good option  ]

5,  LED Lens and Lens holder 

 video: old

video: new

reklrekl15 days ago
Nice thing.
But do i really need a current limiter to drive the LED and if yes, what transistors/resistors will I need?(32V, 3A) and do I need PNP or NPN transistors?
I think the step up converter is current limited at 6A, sso that would kill the LED...

Jestin_Cubetech (author)  reklrekl15 days ago

DC-DC 100W Constant Current Boost Step-up Module Power Supply.

pumpdatbass3 months ago
ever check temps on that thing? id be curious as to how much light it actually produced and how warm it is 2-3" from the led edge and center.
Jestin_Cubetech (author)  pumpdatbass3 months ago
9000 Lumens.
at least 40 deg C
TheGreatS4 months ago
Very cool. Or rather, due to 100 watts, hot? Still, a great instructable.

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