My Omnicharge shows they use around 17 watts. Not sure about the lumens but they really make it shine at night and cover the average room with ease. I have two so I can shoot scenes from two angles so the whole place seems lit by an invisible light. The light gets warm, but not hot, which may just be an unavoidable side effect (although ultraviolet, which is closer to black light, is on the opposite side of the visible spectrum than infrared, which is heat). They're built pretty solidly and I toss my lights in bags quite often, and also regularly mount them to cars with superclips.
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