Is wireless charging on the iPhone advisable? we analyze it — 2022

It is becoming more and more normal to get home and leave the mobile on our table in the wireless recharging base. Apple, although it was quite late to integrate this standard into its equipment, now users have integrated this charging system quite well in our day to day life. But the vast majority of users ask themselves the question: Is it good to charge an iPhone by induction? In this article we will try to analyze it and answer it.

Getting to know wireless charging

Although many devices are recharged on a daily basis without the need for a cable, many people do not know the exact operation of what they are doing with their mobile phone. Here we tell you everything you need to know about one of the most standardized charging systems on the market.

What is wireless charging?

Before talking about the advantages and disadvantages of wireless charging, we must first understand how it works. We assume that both the charging base and the mobile device include coils that will transmit and receive energy, respectively. When both coils interact, a magnetic field to induce alternating current that will recharge our mobile equipment. All this can be understood even more by taking a look at the Faraday's Law .

The only problem that can be found with this type of loading on paper is that the reels must be perfectly aligned to proceed with loading. If we move the equipment a little, it is possible that the load will not be carried out. When it comes to power, there is no limitation on paper as can exceed 100W but obviously heat release is a problem. The regulation of the amount of energy that is transmitted is determined by the communication between the receiver of electricity and transmitter. With this control circuit it is possible to pass the adequate energy to the equipment.

Wireless charging explanation

What you should know about the Qi standard

When buying a device that charges wirelessly, you have surely seen that it is specified that it has a Qi standard. In general, both the iPhone and any other device of another brand have implemented this standard when charging wirelessly. This is because in order to standardize this charge, the largest manufacturers are governed by the Qi charging standard developed by the Wireless Power Consortium (WPC) . As we have said before, with this standard the devices make use of electromagnetic induction.

In this way, both wireless charger manufacturers and mobile device manufacturers offer a good experience. This means that in the market you do not have to realize if you buy a wireless charger that is compatible with your iPhone or with your mobile that includes Android. All chargers are universal and are suitable for all mobile devices and also for accessories that integrate wireless charging. This is undoubtedly a great advantage for all users as it offers them the convenience of not having to worry about compatibility, this being the result of a great agreement between the companies.

iPhone compatible with wireless charging

Since 2017 we have seen iPhone launches with this capability, so every model launched since that year has brought this compatibility. The full list is as follows:

    iPhone 8 iPhone 8 Plus iPhone X iPhone XS iPhone XS Max iPhone XR iPhone 11 iPhone 11 Pro iPhone 11 Pro Max iPhone SE (2nd generation) iPhone 12 iPhone 12 mini iPhone 12 Pro iPhone 12 Pro Max iPhone 13 iPhone 13 mini iPhone 13 Pro iPhone 13 Pro Max iPhone SE (3rd generation)

iPhone 8 - Wireless charging

And what is MagSafe charging

Starting with the iPhone 12 generation, and with the exception of the third generation iPhone SE, Apple has evolved wireless charging with the inclusion of MagSafe technology. Although by the name given to it it may seem that we are dealing with a totally different load, the truth is that the practical operation is the same. The only difference is that Apple has included the necessary technology to have much more efficient wireless charging.

With the inclusion of a system of magnets around the coils and the appropriate compatible charger, it is possible to achieve a perfect alignment between the charger and the charging coil that exists inside the iPhone. The energy can flow without being wasted as much, thus being able to exceed 7.5W without overheating excessively and extending the useful life of the battery, which is the final objective that is pursued in addition to recharging much faster.

The great peculiarity of this technology is that MagSafe chargers remain completely magnetized to the back of the iPhone, providing a way to charge the device wirelessly, but also allowing all those users who want to use it during the time that it is being used. loading, they can. This was one of the handicaps presented by wireless charging, which always has to be supported on the charging surface, making it almost impossible in most cases to use the equipment itself. In addition, by having these magnets, it has not only served to offer users another way to charge their devices, but it has also made it possible for many other types of accessories to take advantage of this technology to improve their operation and the experience they have. the users.

Charge an iPhone by induction or not, the big question

There have been many studies that are currently published where the impact of this type of load is analyzed. What is specifically analyzed is whether the battery of the equipment degrades faster through wireless charging. It is true that over the years this technology has been improving as we have previously mentioned with MagSafe technology and also through software where it is always about evolving in favor of having a more efficient charge.

We start from the idea that high temperatures negatively affect our mobile equipment and its batteries. Unfortunately when we are charging with a high power, the temperature of the equipment increases and this leads to a degradation of the battery. This is why abusing ultra-fast charging can be extremely inadvisable and this is transferred to wireless charging. In fact, our advice is that, although it is not inadvisable to use fast charging on an occasional basis, this cannot be the usual thing on a day-to-day basis at any time unless it is completely necessary, since the degradation of the battery in the long run it will be much higher.

Belkin Charging Cradle

When we put our iPhone on a charging base we must consider that we are facing a process that is inefficient . By this we mean that part of the energy that is emitted is not 'collected' by the iPhone, but is completely lost as heat. This heat unfortunately can affect the battery and therefore affects the health of the battery. Manufacturers have learned of this in recent years and have begun to make phones that work as battery coolants, in quotes. It is quite typical that when an iPhone is charging wirelessly for a while and you put your hand on it, it feels quite hot.

The fact that the coils that emit energy are not perfectly aligned with the coils that receive energy means that a good part of the energy is not used and this heat is generated. The objective of numerous investigations is of course to reduce this type of heat. But even if this moment comes when it is much more convenient, it is certainly more advisable to charge wirelessly both for convenience and to extend the life of the battery.

In addition, another aspect that you have to take into account is the charger that it uses. It is vital that whenever you charge your iPhone you do so with a charging base that guarantees that it has been approved by Apple itself so that its devices can be placed on it to charge. Usually those charging bases that do not have this certification cause excessive overheating that will surely end up damaging your iPhone's battery. Therefore, our advice is that you always buy wireless charging bases that are made for the iPhone and are from recognized manufacturers, since perhaps by purchasing a cheaper one, you will have to change the battery in your iPhone sooner than expected.

So… is wireless charging good?

By this we mean that wireless charging on the iPhone can be good but when we talk about reduced power. Right now Apple only allows charge up to 7.5W and we think it's appropriate. We must judge if our equipment is getting too hot to know if it is adequate or not to recharge it. In a general way, when we make a load and we are not using the iPhone, watching videos, for example, we do not suffer any problem.

On the contrary, it may be advisable to do wireless charging at 5W to avoid battery degradation. It is much better to charge the mobile in this way than to do it, for example, with the 18W charger that is included in the latest models. Without a doubt, it is extremely comfortable to get home and put the mobile on top of a surface to recharge. With this move we save having to go looking for cables and we have a much cleaner set-up. That is why wireless charging is the most recommended today both in terms of comfort and if you want to extend the life of your device's battery so that it lasts much longer without being changed.

And you, do you charge your iPhone wirelessly?