What is Wireless Charging? How does it Work?
Wireless charging has been around for quite some time now. If you own a flagship smartphone released within the past three years, chances are that it supports wireless charging.
What is wireless charging?
Wireless charging is the transfer of power from a power outlet to your device, without the need for a connecting cable.
It involves a power transmitting pad and a receiver, sometimes in the form of a case attached to a mobile device or built into the phone itself. When we said it was cable-free, it isn’t quite, because the pad will have a cable going from the outlet into it.
How does wireless charging work?
It uses electromagnetic induction to wirelessly transmit power between a wireless charger and a device that can be wirelessly charged. To simplify, there is one coil in the wireless charger and another in the receiver.
When the receiving magnetic plate on the mobile device comes into contact with the transmitter – or at least within the specified range – the magnetic field generates an electrical current within the device.
This current is then converted into direct current (DC), which in turn charges the built-in battery.
What are the advantages of wireless charging?
- Safer way to transfer power to your phone.
- Simple to just drop your phone on the charging pad.
- Puts less strain on the charging port of your phone.
- Qi charging pads being installed in various places around the world, if you run out of juice and don’t have a cable you can still charge your phone.
What are the disadvantages of wireless charging?
- Wireless charging is slower, especially for phones with Quick Charge technology – plugging into a wall outlet will be much, much quicker for those devices.
- If you’ve got your phone charging via a cable, you can still hold it and use it as normal. If you take your phone off a wireless charging pad to use it, it stops charging.
- Not all phones have it.
Many car manufacturers have wireless charging in certain models, but even then it often isn’t as standard and tends to be on models further up the range. The manufacturers using it include Audi (and the rest of the WV group), BMW, Ford, Honda, Mercedes-Benz, Peugeot, Toyota, and Volvo.
Yes, wireless charging is definitely safe. The electromagnetic field created by a wireless charger is insignificantly little, no more than a home or office WiFi network. Rest assured that you can safely wirelessly charge your mobile device on your night stand and on your office desk.
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