Induction roar

Putting electricity through a conductive coil can induce current to flow in a nearby conductive coil. This is the basic principle behind inductive charging. The way it works in practise is fairly simple. Install a live coil in a mat in a garage or parking space. Park an EV with an induction coil installed over the top of it. Current will then cross the air gap to charge the battery.

Pushing electricity across the gap between the coils is less energy efficient than a cable connection, and the maximum charge rate is low. For these reasons inductive charging is best suited to Plug-in Hybrids (PHEVS), which have small batteries that need frequent replenishment, rather than EVS capable of going days or even weeks between charges.