Handheld Rechargeable LED Work Light

The handheld rechargeable LED work light has magnetic base at the bottom, which can be adhered to iron products. The lamp holder can rotate 360°.With the function of charging, you can charge the mobile phone for emergency situation. It also has USB port for easy charging. 

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Tips: What is an LED Light?

Most flashlights or headlamps, handheld work light are composed of many LED lights that makes our daily life more convenient. LED, light emitting diode, is a solid state semiconductor device that converts electrical energy into visible light. There is a semiconductor chip in the middle of an LED, one end of the chip is attached to a bracket. One end of the chip is connected to the negative pole, and the other end is connected to the positive pole of the power supply, so that the entire chip is encapsulated with epoxy resin. The semiconductor chip is composed of two parts, one part is P-type semiconductor in which is dominant. Another part is N-type semiconductor which is mainly electrons. However, when these two semiconductors are connected, a P-N junction is formed between them. When the current acts on the chip through the wires, the electrons will be pushed to the P area, where the electrons and holes recombine, and then they emit energy in the form of photons, that is the principle of an LED light. The wavelength of light is determined by materials of forming the P-N junction as well.