If you are investing in a high-end smartphone it is likely that you will also end up buying a wireless charger. They are very useful and the most recent ones even offer an interesting speed. But the curious thing is that we have seen some publications from various users that reveal concerns about this method. Are wireless chargers dangerous or is it just a myth?
Wireless chargers are dangerous! Myth or truth?
To answer this question we have to look at how the wireless charger works. Wireless smartphone charging uses electromagnetic induction to transfer electrical energy from the charger to the smartphone. Electromagnetic induction is a phenomenon whereby a rapidly changing magnetic field produces electrical energy in a closed circuit that interacts with that magnetic field.
From the outset, for wireless charging to work, we need a smartphone that supports wireless charging and a compatible wireless charger. When we place a compatible smartphone on a wireless charger, the rapidly changing magnetic field interacts with the copper coil inside the smartphone, inducing an electrical current. The electrical current produced charges the battery. Compatibility is ensured through the use of wireless charging standards.
However, for it to work, the copper coils must be aligned.
In other words, if you cannot place your smartphone correctly on the base, it will charge slowly or not at all.
One possible solution is to force the coils to be aligned. For example, MagSafe uses magnets very well to ensure good positioning.
However, there are other forms of charging that no longer require this charging. An example of this is charging by resonance or via RF. The latter allows you to charge your smartphone without being too close to the charger.
So now let’s get to the answer that matters.
Does wireless charging damage your smartphone’s battery?
The wireless charger does not damage your smartphone’s battery. Some people have this idea but this is false. People who believe that wireless charging damages a smartphone’s battery say that wireless charging generates more heat than wired charging, which can put more strain on your battery.
While this is true to some extent, the heat is controllable by the smartphone and should not damage the battery.
Wireless charging produces more heat than conventional cable charging due to the way it works. A secondary effect of electromagnetic induction is the generation of excessive heat. Of course, if not properly managed, the heat generated by wireless charging can damage your smartphone. Fortunately, wireless charging standards have guidelines for this issue.
For example, if a wireless charger detects excessive heat, it will reduce the battery’s charging speed. Lower power output equals lower heat, so your smartphone will remain safe.
Second, during wired or wireless charging, the battery itself does not heat up. In the case of wireless charging, only the copper coil inside the smartphone heats up. However, the battery is protected by a layer of thermal insulation.
Furthermore, wireless charging does not affect battery charging cycles any more than normal cable charging.