Qi Wireless Charging

Qi is a wireless charging technology used to wirelessly power electronic devices such as smartphones, tablets and wearable computing products. Qi, which is pronounced like “chee” and is taken from the Chinese word for “natural energy,” was created by the Wireless Power Consortium in 2009.

The consortium itself formed in 2008 as electronics and mobile device manufacturers like Sony, Samsung, LG, Motorola and HTC partnered to create a standard that would utilize electromagnetic induction principles to power devices without the need for wires.

Qi’s Competition in the Wireless Charging Market

The Wireless Power Consortium’s resulting Qi standard has emerged as the frontrunner in the battle for wireless charging market share against competing technologies such as the Power Matters Alliance’s PowerMat and the Alliance for Wireless Power’s (A4WP) Rezence.

The Power Matters Alliance and the A4WP have since allied as of February 2014 in an agreement to share their specifications in an effort to better compete against the Qi standard.

How Qi Wireless Charging Works

The Qi wireless charging standard enables inductive electrical power transfer over a maximum distance of up to 1.6 inches. A Qi Receiver, which is a mobile device compatible with the Qi standard, is placed on a Qi Sender charging station, which transmits power to the receiving device.

Mobile smartphones and tablets in a Qi wireless system are charged via resonant inductive coupling, or loosely coupled charging, in which multiple devices can be charged at once without the need to place the device(s) in a specific spot and position. This is in contrast to tightly coupled charging, wherein a device needs to be precisely positioned on a wireless charging pad before it can be charged.

Forrest Stroud
Forrest Stroud
Forrest is a writer for Webopedia. Experienced, entrepreneurial, and well-rounded, he has 15+ years covering technology, business software, website design, programming, and more.

Related Articles

Early Adopter

Early adopters play an integral role in the shift from untested to critical technology—they're the first buyers to invest in new hardware, software, or...

Process Automation

Process automation shortens or eases manual tasks, often making the results more accessible to users. Automation typically decreases the need for human deliberation or...

Digital Marketing Acronyms and Terms to Know

Many companies have had to evolve their businesses to meet consumer wants and needs in new ways. One area that is evolving consistently and...

Database Software

All organizations must store and manage data in a database. Database software is key to efficiently accessing, controlling and sharing the information stored in...

Accenture

Accenture is a global professional services company that specializes in information technology (IT)...

Best Managed Security Service...

Organizations of all sizes can outsource their management of security devices and systems...

Gartner

Gartner is a world-renowned information technology (IT) consultancy and advisory firm that conducts...