How does wireless charging work? Here's what you need to know

ByGB Blog Official 2018-01-22 1623

Wireless charging has been around for a while but its popularity is still a relatively recent phenomenon. With a number of flagship smartphones like the iPhone 8, Samsung Galaxy, Motorola and others adopting the new tech, wireless charging is now more widespread than ever.

If you are still not sure if this is something you want in your smartphone, read on. In this post, we take a closer look at what wireless charging is, its key benefits and main drawbacks.


How does wireless charging work?

Wireless charging is based on the principle of magnetic induction. In short, the chargers use magnetism to transmit energy — and, in practice, they are very easy to use. Most wireless chargers come in the form of pads: typically round, but also square, rectangular and so on.

round wireless chargerrectangular wireless charger

First, you plug in your wireless charger into the power outlet. Then, you place your phone on the charger. The current coming from power outlet will move through the wire of the wireless charger and create a magnetic field. This magnetic field, in turn, creates a current in the coil inside the device lying on the wireless charger. The magnetic energy then converts into electrical energy — which is exactly what your phone's battery needs to charge up.

how does wireless charger charge your phone

Naturally, your phone must be equipped with the hardware that supports wireless charging in order for everything to work.


Is wireless charging safe?

Yes. In this regard, you have nothing to worry about. The field created by the average induction charger is not in any way more harmful than radio waves — and the field created is not strong enough at all to have any effect on your body. So, you can feel free to use wireless charging regularly and even have the charger on your bed stand.


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Wireless charging vs. wired charging

There are several significant advantages that wireless charging has over standard wired charging.

1. You don't have to fiddle with cables.

This is probably the number one reason users opt for wireless chargers. Wires are messy, dusty and very limiting. Wireless chargers let you use your phone freely while it's charging without any inconvenience.

2. It's better for your phone.

No matter how careful you are when plugging your phone in to charge, it will still cause wear and tear over time to your smartphone's charging port. Wireless charging, on the other hand, does not require any "intrusion" into your phone — simply place the phone on the pad to charge.

3. It's compatible with all phone models.

With a wireless charger, you can forget about bringing different cables with you (if you have several phones) or the problem taking the wrong charger accidentally. Wireless charging pads will work with any phone that supports it and the issue of compatibility resolves itself.


Related: How to charge your mobile phone faster and safer


Does wireless charging have any drawbacks?

Sure.

First, it's not quite as fast as cable charging — at least for now. A web places the difference in charging time for Samsung Galaxy S6 at 1.43 hours in favor of cable charging (it took 1.48 hours to fully charge the phone with a cable and 3.01 hours with a wireless charging pad).

Another possible drawback is overheating. It's said that wireless charging makes your phone heat up faster, which is potentially damaging to the battery.


So, cables or no cables?

Once again, it all comes down to you. As more and more manufacturers recognize the selling points of wireless charging, we will probably see more and more smartphones supporting it. Wireless charging is more convenient, easier and it does look cooler than a traditional cable. With that, it is not as efficient as a cable — especially with fast charging options available today. But things may change very quickly — and if you have an option of going for a phone with wireless charging, you can experience the difference first hand.


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