The wireless charger for our smartphones... What is it? How does it work ?

The wireless charger has become a product that is commonly found on the market. Are you intrigued by this but first want to know how it works? And how to choose a good one?

We offer to enlighten you on the subject, so you can make the right choice!

Definition and operation of the wireless charger

The wireless charging system, also known as "inductive charging" is a relatively new technology that allows us to do without wires for charging the batteries of our electronic devices. For it to be functional, this non-wireless charging system needs two distinct elements:

            - A device compatible with wireless charging technology, such as a connected watch or a smartphone for example.

            - A wireless charger, often in the form of a mat, puck or stand, that is plugged into a power source.

Note that the connection of the wireless charger to its power source is done in a wired way. On the other hand, it is the contact between the charger and the electronic device to be recharged which is done without wire. It is then enough to put the device in question on the support of load, and the battery starts to be charged in an immediate way.

Explanation of Qi technology

Wireless mobiles and chargers use a magnetic induction technology called Qi. It works by using a coil that transmits and a coil that receives the magnetic field. The receiving coil is located inside the device to be charged (tablet, smartphone or other compatible device).

In order for the battery to be recharged, you need to place the device on the wireless charger. The recharging is then done thanks to the phenomenon of magnetic induction: current is generated when the charger and the device come into contact, thus causing the battery to recharge.

How induction charging works

The importance of compatibility between the wireless charger and the device

Even though the majority of wireless chargers use Qi technology, it should be taken into account that not all of them are equal, so it is necessary to ensure compatibility between the charger and the electronic device to be charged. For smartphones, for example, not all models on the market have the same wireless charging power.

For example, some iPhones work with 5 and 7.5 watt chargers, while Samsung Galaxy models can take advantage of higher charging power, and thus support a 12 watt wireless charger. A Huawei P30 Pro can be charged with a 15-watt wireless charger.

A more powerful charger allows for faster charging, provided that the electronic device to be charged is compatible. It is important to note, however, that the charging speed with a wireless charger is generally lower than with a traditional wired charger.

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Design and materials of a wireless charger

The wireless charger can come in various forms and be made of different materials. In general, wireless chargers are marketed with one or two charging surfaces. These surfaces can either be vertical or flat.

The vertical charging surfaces are useful if you want to consult your smartphone while charging. The flat position is less cumbersome and more convenient to quickly put your device down. The flat charger also allows you to be less distracted compared to the vertical charger which will tend to encourage you to use the phone.

The materials used

The materials with which wireless chargers are designed can be of many kinds. This also offers different renderings that can be very aesthetic. Some chargers are made of a mixture of plastic and non-slip rubber. For a modern look, you can opt for a glass wireless charger.

But if you want a unique and natural design, a wireless bamboo charger will fit perfectly into a natural decor.

The design

In terms of design, the wireless charger is often characterized by a modern, sleek, sometimes minimalist look. It will not be difficult for you to find a model that can fit into your decor.

For the flat wireless charger, the most common and popular model is the pebble-shaped one. As the name suggests, this type of model has a flat, rounded shape. The pebble charger allows for secure placement of the device, optimizing contact to ensure battery charging.

For the vertical wireless charger, the models offered on the market are essentially supports on which the electronic device is supported. In terms of design, the various brands offer shapes that can vary considerably. So it's up to you to choose the one you like.

However, don't forget to make sure that the wireless charger you plan to buy is compatible with the device you have.

Safety and certification: key elements of a wireless charger

Currently, there is a huge quantity of wireless chargers on the net, sometimes at very (or too?) affordable prices. That said, before rushing to buy low-cost models from China, you should take into account several parameters in order to purchase a reliable wireless charger that is perfectly suited to your electronic devices.

The first criterion to consider is the certification. You need to make sure that the wireless charger is Qi certified to ensure compatibility with your tablet and smartphone.

It is also important to ensure that the charger meets all safety requirements imposed by international standards. These ensure non-harmful manufacturing materials, and low carbon emission levels.

Different acronyms have to be identified depending on the country and its laws, such as CE, FCC, RCM, EAC, BSMI, UL or KC.

Finally, choosing a Qi-certified and standards-compliant wireless charger ensures that your device won't be prone to overheating or overvoltage issues. Quality chargers have smart chips that deliver the ideal power. They can also cut off the voltage spike on the device while charging, protecting your phone in case of lightning or power surges.

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Conclusion

Until a few years ago, being able to charge your electronic devices on a simple cradle, without a wired connection, was science fiction. But nowadays, this technology has become real, functional and safe.

The wireless charger isn't just practical. With the various designs and materials used in its design, it has become a real decorative piece, whether it's on your desk or bedside table. The wireless charger has made our lives easier, and with the evolution of technology, who knows what else the future holds!

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