Wireless Charging provides a convenient, safe, and reliable way to charge and power millions of electrical devices at home, in the workplace and in industry.

By eliminating the use of physical connectors and cables, wireless charging provides a number of efficiency, cost and safety advantages over the traditional charging cable.

Wireless charging of electric vehicles continue to be one of the most researched  areas of wireless power transfer.  By reducing the reliance on fossil fuels, electric vehicles provide a sustainable and environmentally safe means for fuelling our vehicles well into the future.

From smartphones, to hand-held industrial devices and heavy-duty equipment applications, wireless power maintains safe, continuous, and reliable transfer of power to ensure all varieties of devices and equipment are charged and ready to go at a moment’s notice.

Essentially wireless charging uses electromagnetic fields to safely transfer power from a transmitting source to a receiving device for the purposes of wirelessly charging a battery.  As the name suggests, it does so without the use of a physical connection.

Wireless charging uses electromagnetic induction wherein power is transmitted to the receiving device without the need for physical cables. As complicated as it may sound, the functioning is pretty simple. You just place your smartphone on the charging mat and the device starts charging. For devices like smartphones and wearables, the Qi standard of wireless charging is used.

Wireless charging is based on the principle of magnetic resonance, or Inductive Power Transfer.  This is the process of transferring an electrical current between two objects through the use of coils to induce an electromagnetic field.

The diagram below simplifies the process of wireless charging and power transfer into 5 key steps.

How Resonant Wireless Charging Works


  • Reduced cost associated with maintaining mechanical connectors.
  • Safe powering or charging devices that need to remain sterile
  • Prevent corrosion due to elements such as oxygen and water
  • Eliminate sparks and debris associated with wired contacts

The next best thing to wireless charging mats would be the Pi wireless charger. Shaped as a cone, the Pi wireless charger changes “the angle of a magnetic field to perfectly match the angle of your device”. Pi can charge up to four or more devices at once giving up to 10W of power per device.