Wireless charger power is backward compatible.
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The charger is marked with the maximum output power, so, under this power can be supported, for fast charging, as long as the protocol (such as QC2.0 3.0, PD2.0, etc.) support can be assured.
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And the charger specifications should determine the charging speed, 5V2A conversion is 10W, certainly can not meet the 24W fast charge standard.
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Wireless charger refers to the charger that does not need to be connected to the terminal device that needs to be charged without the traditional charging power cord, and uses the latest wireless charging technology.
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By using alternating magnetic fields generated between coils to transmit electrical energy, inductive coupling technology will act as a bridge between charging base stations and devices.