Qi: Charging, simplified

Used by more than 200 companies, Qi is sparking a wireless charging revolution for all.

The benefits of Qi

Charged and ready to go

The leading wireless charging standard, Qi has been embraced by hundreds of leading manufacturers and is in 1238 products you can buy now.

Farewell, power cords

Frustrated with messy, often incompatible cables? Qi charging technology cuts the cord for your devices - finally, they are truly wireless.

A real standard, right now

Qi is an established, universal technology standard available to developers and consumers right now.

Wireless power to roam

Widespread industry adoption means Qi is available in many locations where charging is most needed, including airports, autos, hotels and offices.

The technology powering Qi

Simple, efficient and safe, Qi charges or powers an array of devices, from smartphones to cordless kitchen appliances. Qi combines induction and resonance technologies to deliver a superior standard.

Qi: The best of both worlds for optimal wireless charging

Induction

With inductive charging technology, the charge passes between a transmitter and receiver coil placed closely together, usually only separated by the outer casing of the two devices (<7mm). The coils must be aligned to make the connection, making inductive charging great for direct-contact applications. Some Qi transmitters use a multi-coil system, eliminating the need to align the device on the charging area.

Resonant

Qi resonant wireless charging builds on the benefits of inductive charging by removing the close-contact requirement. The transmitter can detect and charge existing Qi receivers at greater distance (up to 45mm). This spatial freedom makes resonant charging perfect for applications such as mounting a charger under a table, desk or embedding technology deeper into a device.

Both

Qi encompasses the benefits of both inductive and resonant charging technologies in a versatile standard that eradicates dead battery. Because inductive and resonant technologies have unique use cases and benefits, Qi products are incorporating both to offer the innovative services and features in the most energy-efficient and cost-effective possible.

Get all the developer details for Qi technology, the universal charging standard that is changing the world.

Qi: A closer look