In 2008, the Wireless Power Consortium (WPC) came together to establish a standard for wireless charging which set qi wireless charging as a technology standard. Essentially, qi wireless charging involves transferring power wirelessly to charge devices.
Based on the Chinese word for energy, Qi (pronounced as “chee”) uses electromagnetic induction to transmit power from a charging pad or stand to compatible electronic devices such as a mobile device or a smartwatch. Qi wireless charging offers users convenience as users do not need cables and physical connectors.
How does Qi wireless charging work?
A Qi-compatible charging pad or stand contains a wire coil that generates an oscillating magnetic field when connected to a power source. A Qi-compatible device, such as a smartphone or a smartwatch, comes with a receiver coil.
When the magnetic field generated by the charging pad comes within range of the receiver coil, it induces an electric current in the receiver coil, which is then converted into direct current (DC) to charge the battery.
What are the benefits of Qi wireless charging?
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Convenience
By using Qi wireless charging, users no longer need to use cables or specific connectors. Users only need to leave their device on a charging pad to use qi wireless charging.
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Universal compatibility
Many manufacturers support the Qi wireless charging standard, so users will be able to charge different types of devices with the same wireless charger.
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Safety
Wired charging can prove dangerous at times, such as when short circuits lead to cables catching fire due to temperature build-up. With qi wireless charging, built-in safety features protect both the wireless chargers and devices. These features include detecting foreign objects, temperature control, and anti-overcharging mechanisms.
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Longer life for batteries
Devices that rely on wired charging often suffer from reduced charge-carrying capacity over time. This is because wired charging usually relies on high temperatures, whereas the temperature can be controlled with qi wireless charging.
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Reduced wear and tear
Charging ports experience fewer mechanical stresses as there are no cables to plug in and out. Users also don’t need to replace cables, which, on average, will see more wear and tear than a charging port.
Is Qi wireless charging the same as wireless charging?
Qi is the most widely adopted standard for wireless charging because of its widespread adoption and support from major brands like Apple, Samsung, and Google. Other standards, like PMA (Power Matters Alliance), exist.
How do I turn on Qi wireless charging?
To turn on Qi wireless charging, follow these steps:
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Check compatibility
Ensure your device supports Qi wireless charging and check device battery details. This information can usually be found in the device’s user manual or specifications sheet.
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Power the charging pad
Connect your Qi charging pad to a power source. Use the supplied power adapter and cable to ensure optimal performance.
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Place your device
Place your Qi-compatible device on the charging pad, aligning the coils for efficient charging. Most modern devices will automatically begin charging when placed correctly.
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Enable settings
Some devices require you to enable wireless charging in the device’s Settings.
Conclusion
Qi wireless charging offers users a convenient option for charging their devices without the need for cables and adapters. Its widespread adoption by electronic device manufacturers ensures that a Qi wireless charger can be used for multiple devices.
