The wireless charging technology mainly uses electromagnetic technology to convert the current into electromagnetic energy in the transmitter, and the mobile phone converts the electromagnetic into a current through the built-in chip receiver to charge the mobile phone. The key to the promotion of wireless charging technology is to ensure that the wireless chargers of various manufacturers can be compatible. The formulation of Qi standard enables wireless charging to have a unified technical specification to ensure the compatibility of the same charger for multiple brands and multiple products. Meno Treffers, chairman of the Wireless Charging Alliance, said that the Qi wireless charging standard uses electromagnetic induction technology, which is more efficient and safer than other technologies. Qi wireless charging standard includes interface, performance and regulations, which will be a big challenge for the popularization of wireless charging technology, so the mobile phone with Qi standard will be able to pass any Qi-certified charging base station, base or other rechargeable. The device is wirelessly charged. Qi's first pre-requisite for the device is no more than 5 watts, which may be a big limitation for some manufacturers who want laptops to pass the same wireless charging technology.
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