RE: Wireless charging17 Jan 2020 08:25
In WiTricity's car charging system, large copper coils – over 25 centimeters in diameter for the receivers – allow for efficient power transfer over distances up to 25 centimeters. The use of resonance enables high levels of power to be transmitted (up to 11kW) and high efficiency (greater than 92% end-to-end), according to WiTricity CTO Morris Kesler.
Only 11kw and huge copper coils required. They not gonna be cheap