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LED light bulb efficiency. Animation showing the energy efficiency of an LED (light-emitting diode) light bulb. 85% of the electrical energy is converted into light, and only 15% is lost as heat. The energy efficiency of LED lamps is many times better than that of incandescent lamps, and significantly better than most fluorescent lamps. The lifespan of these lamps is also much longer. See K004 8882 and K004 8878 for comparison.

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