Why use wireless charging? Wireless mobile charging is the new kid on the block. Some consider it to be a breakthrough while others are not entirely impressed with it.
For anyone to appreciate its advantages and disadvantages, it is imperative to understand what is wireless charging, and how does it work?
Without a clear understanding of what it functionally is, the attempt to discuss the pros and cons will end up in an academic discussion.
How does the wireless mobile charging work?
Well, as the name suggests, the mobile phone is charged without using a wire of a cord. It works on the principle of ‘Resonant Inductive coupling.’
In recent times, the Wireless Power Consortium (W.P.C.), has accepted the Qi (pronounced as Chee) as the leading standard for wireless charging.
Primarily, the base unit (transmitter) consists of a coil which generates High-Frequency Alternating current (H.F.A.C.), when switched on. When the Qi-enabled mobile phone comes in the vicinity of this base unit, these H.F.A.C. induces an electrical current in the receiver of the phone, because of the electromagnetic field generated.
The electrical current induced or transmitted to the phone is an alternating current, which cannot charge the phone battery directly. Through an appropriate circuit (Rectifier circuit), the alternating current gets converted to the direct current. And the battery of the cell phone gets charged internally.
This technology was demonstrated by Niklo Tesla some 100 years back. However, it was only in the year 2012 that Nokia, for the first time, used mobile wireless charging in Lumia 920.
What are the advantages of wireless mobile charging?
Wireless charging have seen many ups and down on the way to the stage where its now. This path-breaking innovation has some really great advantages, like;
Convenient to use.
Simply, by leaving the mobile on the base unit, and it gets charged.
There is no need to look out for the wires, charger head, etc. Connection and disconnection are pretty fast.
If need be, mobile phones can be charged even in the sealed and packed condition. However, this is impossible to do with conventional chargers.
Required Power output
One base unit can deliver 5W, 7.5W,10W, and 15W power as desired and set. This feature facilitates fast and slow charging.
Bigger mobile phones need more wattage for charging, and this base unit is suitable for that.
Integration of charging
Different makes and models of mobile phones charged using just one base unit (one after another). Some wireless mobile phone chargers come with the option of charging up to three mobile phones simultaneously.
So a single unit can charge apple and android phones. No more discrimination, at least while charging the phones.
Clutter reduces significantly.
Be it home or office, the sight of those different chargers either hanging from the wall or sprawled on the table seems rather untidy and unwelcoming.
The beautifully designed wireless base unit sits on the table as a small display. These days, furniture with conspicuous, and built-in wireless chargers are already in the market for grab. Also, wireless mobile chargers aid better housekeeping.
Brings Safety
Moreover, it is safer to use wireless charging units rather than plugged chargers. Since, chances of a loose connection, short circuits, and accidental electric shocks is eliminated.
Cost-effective
In the long run, wireless mobile charging units turn out to be cost-effective. Since there is no frequent plug/unplug, the wear and tear minimize considerably.
The recurring cost of broken cut or lost cables too eliminates. The cost of replacing the conked off Chargers is saved. And, remember one wireless charger is sufficient for all kinds of phones in the house/office.
Reliable
The reliability of the wireless chargers is better than the conventional ones. There is no fear of loose connection, faulty socket, bent pins, and likes.
Secured
The wireless chargers provide better security of devices, particularly at public places like airport lounges, hotels, hospitals. The plugged-in cord can be a stealthy device to steal data from the phone. These kinds of traps avoided by using wireless chargers in public places.
Environment Friendly
The wireless mobile chargers are easy on the environment. Since they last for a long time, it helps generate lesser electronic trash than conventional chargers.
The disadvantages of the wireless mobile charging
Along with many advantages of wireless charging, few serious issues need to be addressed by the manufactures of wireless chargers.
With more people opting and using the wireless charging, some familiar and prominent disadvantages are:
Less Efficient
The wireless chargers have lower efficiency as compared to conventional chargers. They consume more power to charge mobile phones as compared to the conventional ones.
One of the characteristics of an excellent technical advancement is power efficiency, which the wireless chargers lack at the moment.
Older mobile phones cannot charge with wireless chargers. Hence the need to continue with conventional chargers for some of the old phones.
Slow Charging
Even in the fast charging mode, the wireless chargers take a longer time to charge than the normal wired ones. Some manufacturers claim to have launched real fast chargers, but by and large, the wireless chargers are slower.
Overheating
The wireless chargers get heated up fast, and sometimes even the mobiles feel a little extra hot when on wireless charging. That may be because of the induction effect. But this area needs improvement and refinement.
Not, yet truly wireless
Though ideally known as wireless chargers, the base unit still uses the wired contraptions to charge itself. Somehow the word ‘wireless’ seems to be a misnomer in the context.
Easy of Use
The wireless chargers are not suitable for phones having metallic back.
While traveling it is not very convenient to carry and use wireless chargers. At these times, the conventional wired chargers seem a better option.
Till the time the phone is on, wireless charging cannot work. Charging stops instantly once the device lifted to receive any calls.
There is a concern about the emf radiations coming out of the base unit. There is still no conclusive evidence to prove it is harmful. Nevertheless, any unnecessary emissions are a matter of health concern.
Conclusion
All things in the world have its advantages and disadvantages.
The above write up clearly mentions the advantages and disadvantages of wireless charging. Its up to ones perception and outlook to decide how to look at the emerging and trending technologies.
Update – 7 August 2020
Though there are many in the world that see the wireless charging technology bad for the overall power or electricity industry , thus impacting the environment, like the one mentioned in the most recent article on ZDNet. And would not disagree to this. However, many inventions and revolutions to ease human effort have an adverse impact. And for sure, there are and will be inventions in power industry as well to generate the power more ecofriendly way.
Personally, I like it, because it gives me the convenience to place my phone on the wireless charging pad as I am back from work and concentrate to play with my kids. You see the picture of the article about popsocket and wireless charging – that is my phone getting charged on the wireless charging pad.
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