Looking For 1/2 & 1 Watt Leds

Spin · Apr 25, 2006

I'm looking for 1/2 & 1 watt white output Leds that can be powered by two aa alkaline batteries. Runtime 2 hours minimum. Because of the situation i cannot use any regulation or resistors. Any suggestions as to the type & where i can purchase the above would be appreciated. I live in the U.S.

Kryosphinx · Apr 25, 2006

There are very few (if any) 1/2 watt or 1 watt LEDs that can be DD'ed off two aa alkies. You'd need a VERY low Vf LED.
I don't know the wattage, but SMJLEDs work great off of 2 alkies. You can get them from lambda (BST) and tritium (groupbuys)

ACMarina · Apr 25, 2006

What kind of situation is this (if you don't mind my asking)

jsr · Apr 26, 2006

An H-bin Lux3 might work for you. At 3V, you won't have much current, but it should still provide a good amount of light (more than a 0.5W and possibly even more than an SMJLED).

Tritium · Apr 27, 2006

Spin said:
I'm looking for 1/2 & 1 watt white output Leds that can be powered by two aa alkaline batteries. Runtime 2 hours minimum. Because of the situation i cannot use any regulation or resistors. Any suggestions as to the type & where i can purchase the above would be appreciated. I live in the U.S.

See my GB here for 1/2 watt leds that will direct drive from 2 AAA's or 2 AA's.

https://www.candlepowerforums.com/threads/113761

Thurmond

Looking For 1/2 & 1 Watt Leds

Spin

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Kryosphinx

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ACMarina

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jsr

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Tritium

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