Casely Blog – 3.29.24
Good question – at Casely, we’re here to set the record straight. Wireless chargers operate on the principle of electromagnetic induction. When connected to a power source, a transmitter coil in the charging pad generates an alternating magnetic field. When you place a device with a compatible receiver coil on the pad, the magnetic field induces an electric current in the receiver coil, which charges the device’s battery.
Source: How Do Wireless Chargers Work?