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 provide an interesting speed. But the curious thing is that we have seen some publications by several users who reveal concerns about this method. That said, they say that the wireless charger reduces battery life. But is it really true?
Smartphone: wireless charger reduces battery life?
To answer this question we have to look at the operation of the wireless charger. 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 loop that interacts with that magnetic field.
Right off the bat 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 this type of wireless charging to work, the copper coils must line up.
In other words, if you fail to dock your smartphone correctly, it will charge slowly or not at all.
A 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. Examples of this are charging by resonance or via RF. The latter allows you to charge your smartphone without being too close to the charger.
Now let’s get to the answer that matters.
Will 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 produced by wireless charging is controllable by the smartphone and shouldn’t damage the battery.
Wireless charging produces more heat than conventional wired charging because of the way it works. A side effect of electromagnetic induction is excessive heat generation. 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 charging speed. Less power output equals less heat, so your smartphone will remain safe.
Second, when charging wired or wirelessly, 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 regular wired charging.
