Wireless charging technology is what almost every smartphone enthusiast is talking about today. What most people don’t know is that the technology has been around for more than a century. In the late 19th century, Nikola Tesla demonstrated that it was possible to transmit electricity through air by creating a magnetic field between transmitter and receiver. That’s the same principle that is being used today to make wireless chargers.

The only difference is that the inclusion of technology in Apple’s iPhones and other devices has given the technology a new life. However, most people don’t know much about this technology. In this post, we are demystifying what wireless charging is, how it works, what you need, and the main pros and cons.

What is Wireless Charger?

In simple terms, a wireless charger is a type of charger that does not use cables to charge your devices. The technology enables the wireless transfer of the electrical charge from the charging device to the battery-powered device. In other terms, wireless charging is also known as inductive charging because it does not use cables and electricity charge travel through the air.

old charger

How Does Wireless Charger work

The working mechanism for wireless charging technology is pretty simple. As mentioned earlier, Tesla discovered almost a century ago that it is possible to transmit electricity through the air by simply creating a magnetic field between two circuits. That is the same principles that this technology is using.

The wireless charger works by transferring energy from the charging device to the receiver at the back of your device (phones or any other devices) via the electromagnetic induction. The charger has an inbuilt induction coil that produces an alternating electromagnetic field, which is received by the coil in the device you are charging. The electromagnetic field is then converted back to electricity by the said coil in the device to charge the battery.

However, it is essential to note that both the wireless phone charger and the device (phone) must be in close proximity for it to work. In fact, you are required to place the phone being charged correctly on the top of the wireless charger mat.

What Do You Need For Wireless Charging?

To have a working wireless charging system, you need two things. First is a smartphone or a device that’s supporting wireless charging. If the phone has no built-in wireless charging mechanism, you can buy a small device that you put on it to add wireless charging features.

The second thing is a wireless phone charger. These chargers come in the forms of mats, pucks or pads. You have plenty of wireless charging mats that you can pick from depending on the kind of device that you want to charge. There are larger wireless charging mats that can charge even three devices at a go.

How Fast Is Wireless Charging?

One of the questions that most people are asking is how efficient is this technology, especially when it comes to the speed of charging devices. From what we have seen from Apple’s iPhone X and iPhone 8 amongst other devices, wireless charging is slower in most cases than using cables. However, some of them charge faster than others. There are higher-powered wireless chargers, usually 5W and 10 W, that has an output amperage of 1A at 5V. These chargers can fully charge a smartphone battery in around 2 hours.

Pros Wireless Charger

There are many reasons why wireless charging technology is one of the most discussed topics in the phone industry. Here is why this technology is an excellent choice for you.

charging mobile phones


Wireless phone charger offers one of the best convenience features. You just need to place your phone facing on the mat, and it will start charging.

Charge Everywhere

Most of the public spaces such as hotels, bars, coffee shops, and eateries amongst others are now introducing wireless phone mats in their premises. Therefore, you will not need to carry your wireless charger wherever you go.


With a wireless phone charger, you will manage to avoid clutter in your place because there are no wires. So you will get rid of cables on your desk, in your car, and your study room. Already, there are furniture companies that are producing pieces of furniture with inbuilt wireless charging features.

Cons of Wireless Charger

Here are the main shortcomings of the wireless charging system

It’s slow

Compared to cable chargers, these types of chargers are slower. In fact, they can take 30-80 percent longer to charge your devices fully. That’s when you compare it with a cable charger. It’s also essential to mention that about 20% of the power is lost.

You Can’t Use Your Phone

The charger only works when the phone is placed on the wireless phone mat. Once you remove it, the charging stops. Therefore, you cannot use your phone efficiently when it is charging as you fo with cable charger.

‘Qi’ Wireless Chargers

If you are planning to buy a wireless phone charger, we recommend that you go for a Qi wireless charger. It is a universal wireless charging standard that is compatible with all devices. It is also supported by most influential smartphone manufacturers: Apple (iPhone 8 and X) and Samsung Androids.

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