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Wireless charging uses an electromagnetic field to transfer energy between two objects. This is usually done with a charging station. Energy is sent through an inductive coupling to an electrical device, which can then use that energy to charge batteries or run the device.
This is a new wireless charging module, which could provide 5V@300mA (MAX 600mA) power output. It is using the new technology "resonant magnetic coupling, which will reduce the electricity consumption during power transmission. The transfer efficiency could arrive at 90%. It could meet your most project requests.
5V/1A also available (Wireless Charging Module 5V/1A)