Qi Wireless Charger: The Universal Charging System?

Posted by Travid Treasure on

What is Qi and why wireless Charging

  • Qi is from the Chinese word Chee which means energy flow.
  • Qi become the global standard for inductive charging.
  • Qi Standard is the future for wireless charging (Cable free) for all our battery-operated devices.
  • The Wireless Power Consortium (WPC) was established on the 17th December 2008. That same year WPC adopted Qi as the single standard for inductive charging.

Why wireless Charging:

  • The first and most obvious reason is to provide universal charger for your all devices irrespective of make model or type. Each Qi enabled phone is compatible with any Qi charging transmitter, regardless of the manufacturer, model or type of the device.  Several cell phones devices from manufacturer like, Nokia, Samsung, Sony, LG, Motorola and HTC, already comply with the Qi standard and can therefore be charged by any Qi Charging Station.  Consider a situation where you can use a single charger for all your phones, iPods, MP3 players, cameras etc without multiple cables.
  • Another advantage of the Qi charger base is that it only activates and transfers energy when an enabled device requiring charging is placed upon it saving you some energy.

How Qi Wireless Charger works?

Qi wireless charging is based on the principle of induction which is not a completely new technology. Electric toothbrushes have been using the principles of inductive charging for many years.

Qi Wireless Charging uses a resonant inductive coupling between the sender (the charging station) and the receiver (the mobile device). A regular test signal is sent by the sender to the receiver to check for capacity or resonance changes that occur in the receiver. The response to this signal will inform the Qi enabled charger base (the Sender) that a Qi compatible phone is present. The sender then modulates the charge and checks for compatibility to the Qi standard. Once Qi compatibility and the energy requirement have been calculated, the charging through induction begins.

During the charging the sender and receiver remain in contact and as soon as the battery is fully charged the Sender switch into standby mode.

Note: You will need a Qi Receiver for your device if the device is not equipped with internal Qi receiver.


Qi Receiver Is Required For Devices Not Equipped With Qi Receiver like:
  • iPhone 4, iPhone 4s
  • iPhone 5C, iPhone 5S
  • iPhone 6, iPhone 6 plus
  • iPhone 7, iPhone 7 plus
  • All cell phones with a Micro-USB port like Samsung,...

Is wireless charging harmful?

According to QInside, The amount of electromagnetic radiation emitted by the Qi Wireless Charging System is insignificantly little.

The principle of Qi has been used in electronic toothbrushes for years without any known physical effects on human health.

Due to the low range of the Qi wireless charging technology, the electromagnetic radiation is severely limited.

Electromagnetic radiation exists only in the immediate area of the Qi wireless charging station and only when a device is placed there.

The release of electromagnetic rays is further reduced by additional shielding in the sending and receiving coils of the Qi standard.


A charging system that will enable us to charge any device irrespective of make, model and type on a single charger can be considered a universal charger and the Qi wireless charger is stearing us toward that direction.

Get a Qi Wireless Charger for your device

Reference: https://www.qinside.biz/en/support/what-is-wireless-charging


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