Wireless charging refers to the transmission of energy from a power source to a consuming device without wires or cables. This means that all wireless charging technologies are comprised of both a transmitter (or charging station) that transmits that energy to charge the battery of the device.

While wireless charging technology may have been in existence for some time now (specifically on 1891 when Nikola Tesla invented the wireless power transmission), the way we charge our devices is completely new. Check out some things you may want to know about wireless charging technology, along with its pros and cons.

How Does Wireless Charging Work?

 wireless charging

Firstly, plug in the charging pad and just place your mobile phone on top of the charging pad. The main voltage is converted into high alternating current. An alternating current is passed through the transmitter coil, which generates a magnetic field in the transmitter circuit which induces a voltage in the receiver coil. The current flow in the receiver coil is converted into direct current by the receiver circuit, which can then be used to charge the mobile phone’s battery.

Is Wireless Charging Harmful?

Wireless charging is neither harmful for mobile batteries, nor to the human body. When a mobile device is plugged into a wall charger, it produces heat while charging, which is harmful for the battery and degrading its performance. However, a wireless charger does not produce heat at any point, and the device never gets warm. Like other wired charging devices, wireless chargers do not emit harmful radiation because only a small amount of electromagnetic radiation is emitted, which is safe for the body.


  • No cords, leaving users easy access to their phones without disconnecting a charger.
  • Provides a stationary charging station that eliminates the need to move and relocate charging cables.
  • Lower risk of electrical shock, as the charging elements are not exposed to conductors.


  • Reduced efficiency and increased heat generation, as wireless charging methods don’t provide direct connection to the device’s battery.
  • Wireless charging solutions tend to be more expensive than traditional chargers.
  • Users cannot use their device while it’s on the charging pad, as it requires the device to be placed on the pad at all times to continue charging.
  • Not every device is compatible with wireless charging methods, leading to consumer confusion and frustration between all available options.
  • Wireless charging methods limit the number of cases a user can use with their devices, limiting safety and customization options.

Wireless charging has now become a mainstream technology and more number of tech companies are looking to adapt this technology, with its applications and benefits being recognized, wireless charging is becoming a mainstream application. Let’s just hope that wireless charging becomes more enhanced and will be accepted by more consumers so that it will become widespread in the near future.


This entry was posted by Staff Writer on Saturday, January 21, 2017 at 6:17:34 AM and is filed under Sweet Tech.

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