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    What battery and what LED will work best to maintain constant brightness for 10 hours?

    Not quite sure how to figure that out, the LED’s I’m looking at are 4W if that helps.. Thanks!
  2. D

    What battery and what LED will work best to maintain constant brightness for 10 hours?

    Hi there, Just to say I apologise for my lack of basic knowledge, this is something I am interested in learning more on! Anyway I am looking to build a UV emitting light system that shines continuously for 10 hours at least, compromising of an LED, a battery and a resistor I guess. The goal is...

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