Le chargeur sans fil pour nos smartphones… C’est quoi ? Comment ça marche ?

The wireless charger for our smartphones ... what is it? How it works ?

the wireless charger has become a product that is commonly found in the market. This intrigues you but you want to know How does it work ? And how to choose a good one?

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

the wireless charger has become a product that is commonly found in the market. This intrigues you but you want to know How does it work ? And how to choose a good one?

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

Definition and operation of the wireless charger

The wireless charging system, also called "Induction recharge" is a relatively recent technology that allows you to do without wire for charging the batteries of our electronic devices. To be functional, this non-wired recharge system needs two distinct elements:

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

- A wireless charger, often in the form of a carpet, a palet or a support, and which is plugged into a power source.

Note that connecting 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 recharge that is done wirelessly. It is then enough to put the device in question on the load bracket, and the battery starts to recharge immediately.

Explanation of QI technology

Mobiles and wireless chargers use magnetic induction technology called Qi. The operation of the latter is done thanks to a transmitting coil and a reactor coil of the magnetic field. The receiving coil is inside the unit to recharge (tablet, smartphone or other compatible device).

So that the recharge of the battery is done, it takes Place the device on the wireless charger. Reloading is then done thanks to the magnetic induction phenomenon: the current is generated during contact between the charger and the device, thus causing the recharge of the battery.

The importance of compatibility between the wireless charger and the device

Even if the majority of wireless chargers use the Qi technologyIt must be taken into account that they are not all equal, and so it is necessary to ensure the compatibility between the charger and the electronic device to be loaded. For smartphones, for example, models on the market are not all with the same wireless charging power.

For example, some iPhone work with 5 and 7.5 watts loaders, while Samsung Galaxy models can enjoy greater load power, and thus support a 12-watt wireless charger. A Huawei P30 Pro can be recharged with a 15 watt wireless charger.

A more powerful charger allows faster recharge, provided that the electronic device is charging is compatible. However, it is important to point out that the charging speed with a wireless charger is generally lower than that of a conventional wired charger.

Design and materials composing a wireless charger

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

Vertical charging surfaces are useful if you want to check your smartphone during charging. The flat position is less cumbersome and more convenient to quickly lay your device. The flat loader also makes it possible to be less distracting from the vertical charger that will tend to encourage you to use the phone.

The materials used

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

But if you want a resolutely unique and natural design, a Bamboo Wireless Charger will integrate perfectly into a nature decoration.


At the design level, 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 be integrated into your decoration.

For the flat wireless charger, the most common model and the most appreciated is the form of rolling. As the name suggests, this type of model has a flat and rounded shape. The roller loader secures the installation of the device, thus optimizing the contact to ensure the recharge of the battery.

For the vertical wireless charger, the models proposed on the market are essentially supports on which the electronic device is based. Design level, different brands offer shapes that can vary considerably. It's up to you to choose the one you like.

Do not forget to make sure that the wireless charger you intend to buy is compatible with the device in your possession.

Security and certification: determining elements of a wireless charger

Currently, we find on the net a huge amount of wireless chargers, sometimes offered at prices very (or too much?) Affordable. That said, before you rush on low cost models from China, be aware that you need to consider multiple settings, to acquire a reliable wireless charger and perfectly adapted to your electronics.

The first criterion to be taken into account is certification. You must make sure that the wireless charger is certified qi To ensure compatibility with your tablet and smartphone.

It is also essential to ensure that the charger respects all the safety conditions imposed by the International standards. The latter guarantee Inoffensive manufacturing materials, and levels of low carbon emissions.

Different acronyms must then be identified according to the countries and their laws, such as the EC, FCC, RCM, EAC, BSMI, UL or KC.

Finally, the choice of a QI Certified Wireless Charger and respectful of the current standards makes it possible to ensure that your device will not be subject to problems of overheating or boosting. Quality chargers have intelligent electronic chips that allow you to deliver the ideal power. They can also cut the voltage peak on the device being charging, Protecting your phone In case of lightning or overvoltage.


It is still a few years ago, being able to charge its electronic devices on a simple base, without wired bonding, was science fiction. And yet, nowadays, this technology has become very real, quite functional, and also safe.

The wireless charger is not just practical. With varied designs and materials used for its design, it has become a real decorative piece, whether on your desktop or bedside table. The wireless charger has made life easier, and with the evolution of technology, who knows what the future still offers us!