This technology is more than ten years old, and most people don’t know anything about it. If you live in the US or Europe, you probably must have heard about wireless charging. So What is wireless charging? Wireless charging was a massive step in going wireless. It is charging your phone wirelessly.
Wireless charging uses a transmitting device which transmits power to the receiver (Battery) that you want to charge using any wires or cables. In this, you don’t need to plug in a charger or a cable to charge your device. You just put your phone on a wireless charging pad, and your phone or any other device starts to charge immediately.
I use wireless charging every day, and it is more convenient than regular charging. There is no hassle of searching for those long cables that get entangled so easily. Believe me wireless charging change the way you charge your phone.
Which devices support wireless charging?
Speaking of feature availability most Android flagships have wireless charging. Mid-ranged Android phones and iPhones [except iPhone 8 and iPhone x] do not have this feature built in, but there are many cases and products that add this element to your phone. Probably by now, you know about ‘What is wireless charging.’
How wireless charging Works?
So How wireless charging works. I’m going to tell you about two methods that are widely used for making wireless pads that make wireless charging a reality.
This method is not so popular but is still used. In this, the upper surface of the charging pad is electrically conductive. So when you supply electricity the top surface of the charging pad becomes electrically charged. In this, your phone should also have a back plate (It’s pre-built into some phones, or you can get it through a back cover) that can conduct electricity. So when you put your phone directly over the surface of the wireless pad your phone starts to charge. However, this technology is now not available as you can only find this in phones that were manufactured 4 to 5 years ago.
In this method, there is a coil below the surface of the wireless charging pad. This coil is connected to the power supply of the charging pad meaning that the coil is electrically charged. A similar kind of coil is found in the back plate (it can also be found in other parts, but for now on I’m considering it to be in the back plate) of the phone. If you have studied physics, you must be knowing that when you bring a charged coil near another coil (present in the phone) electrical charge transfer itself to the uncharged coil which in this case is present in the phone.
There are two types of inductive charging-
There is not much of a difference in both of them. The only difference is the design of the coil. I will not be going into many details. There is one thing that you must know, that is both of them are not compatible with each other meaning the phone having Pma type coil will not work with the pad having Qi type coil and vice versa.
What are the disadvantages of wireless charging?
Nothing is perfect everything comes with its own set of flaws. One flaw is that you cannot use your phone while charging. Your phone chargers slower as compared to charging with your regular charging cable. This is because most of the electrical power gets lost in the transmission from the transmitter to the receiver.
Although these flaws can be fixed. Now and then we hear about big companies and startups trying to make true wireless charging a reality. True wireless charging technology will allow a phone to charge from a distance of more than a meter. All our devices will start to charge from the moment we will enter our home, our office, public places, etc.
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