how do wireless chargers work?

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Charged my smartphone on a wireless charger and I’m convinced it is black magic or witchcraft. It barely charged (sitting for 4 hours, only went up by 10%.) I assume it has something to do with electrons…

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Anonymous 0 Comments

They look like [this](https://www.amazon.com/Wireless-Charging-Receiver-Module/s?k=Wireless+Charging+Receiver+Module). There’s a similar coil in the charger itself. NFC devices and EZPass work on the same principal. When you drive through a toll booth or touch a card to a terminal an electric field powers a transmitter that broadcasts a unique ID number.

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