Does Wireless Charging Affect the Life of your Smart Phone Battery? The Answer is No!

Is wireless charging bad for your phone battery? Not really! You really should check this to know why.

Are you confused as to whether or not the heat generated by wireless charging has a bad effect on your precious smartphone battery? Have you been searching Google for ways to keep your battery in perfect health but still haven’t got the answer?

Fear not, all will become clear in today’s article. So, Let’s get to it!

1. It’s true! Wireless Charging Will Not Hurt Your Phone Battery Life.

Well, to be specific, the heat generated during wireless charging will not damage your phone battery? Allow me to explain why this is the case.

1) Believe it or not, wireless charging provides a more stable current compared to wired charging

Instead of connecting a cable in a wall outlet or other power source to charge your phone, wireless charging (or inductive charging) is more than convenient and relies on “resonant inductive coupling”. This involves a transmitter coil (located in your wireless charging pad) and a receiver coil (located in your phone) to create the ‘electronic’ connection, and the electric current is transmitted and converted by these two coils which subsequently fills up your phone’s battery.

Wireless charging for iPhone X

Very easy to use, simply place your phone on the surface of a wireless charging pad and leave it there to charge, bingo!

Now, it is important to understand that wireless charging works completely different to wired charging, but how does the current actually flow inside?

Well, with a traditional wired charger, the wall adapter takes the AC (alternating current) electricity from your mains supply and converts this to a DC (direct current) flow to charge your battery.

This is usually higher in voltage and the current that is used is often unregulated and unsafe, although most of the time it operates at about 1.6 Coulomb transmitted current per second (equivalent to 1.6Amps).

Energy transfer during wired charging

However, the current used in wireless charging is around 1 Coulomb per second (equal to 1Amp) and this is quite different to wired charging. The transmitter and receiver coils used for wireless charging are located in different devices (see my explanation on “resonant inductive coupling” above).

Wireless charging circuit diagram

Because it has lower current compared to wired charging along with the separated coils and plastic material (for example, the Qi charger you use) in between, it is actually a more stable and safe charging environment for your battery. Because of this, your phone will remain in better condition over time, and it will also reduce the heat in the battery.

2) Heat does not directly affect cell phone batteries

Although we’ve just explained that wireless charging uses a lower current to charge your phone’s battery, you might still be thinking, ‘does heat damage the battery as it can get pretty hot’?

Well, in reality, it is the semiconductor such as your phone’s back cover that generates heat via the current flow and not the actual lithium-ion battery itself.

Why is this? Well, Lithium, which makes up the battery isn’t a semiconductor, so the battery doesn’t really have electricity passing through, and therefore no heat is generated accordingly.

Lithium

Ah, but will the heat transferred from other semiconductor parts affect the battery if they get too hot?

3) Your phone battery is actually smart enough to protect itself

We often complain that our smartphone can easily heat up when charging. And we also worry that this heat will have a side effect on the battery. However, the phone is more than capable of managing the process and stopping the charging process if things get too hot.

How so? Rechargeable lithium-ion batteries used in smartphones usually have a PCM (Protection Circuit Modules) protection board, which protects the battery. For example, protecting the battery from operating outside its safe operating limits, monitoring its state, calculating any secondary data and reporting it to the motherboard, controlling its environment and so on. Except for monitoring the overheating where the Lithium-ion battery could warm itself in cold environments to maintain performance, which you can see on NewAtlas.

Here’s a good example of the iPhone. Apple claims that it can be charged up to 50% in 30 minutes by fast charging (7.5W), which has been proven to be accurate if you use the right cable and charger. But what you don’t know is that the charging speed slows down when you just want to top up the phone.

Apple's fast charging

A test made by Mashable shows that the iPhone X could be charged 46% in the first 30 minutes, but then it takes 2 hours and 5 minutes to finish the remaining 52%. How so? The fast charging time depends on the charger you use, if the charger can dissipate heat effectively, you can charge the phone at the higher 7.5W (watts) for a longer period, but if not, the charger drops to 5W to avoid damaging the battery.

2. What Can Degrade Your Smart Phone Battery and How to Protect It From Rapidly Aging.

Even though wireless charging isn’t that bad for your smartphone battery, there's no avoiding the fact that batteries have a finite life, after which they will certainly degrade. This degradation is accelerated if you use and charge the battery incorrectly. Fortunately, there are several ways to help prolong your smartphone battery’s life and keep it in good condition.

How to protect your phone battery

1) Deep discharge your phone battery.

Yeah, discharging your phone to zero once a month helps the battery operating system calibrate the full life cycle of the battery, so it knows exactly how much capacity it actually has over time. Unfortunately though, what you should also understand is that your battery has a limited lifespan (or cycle count) and regularly draining your battery means you use up one cycle each time.

By reading Battery University’s discover you will see that “there is no memory and the battery does not need periodic full discharge cycles to prolong life.” What this means is that regularly deep discharging will not help prolong the battery life but actually shorten it just a little bit each time.

Deep discharge is bad to your phone battery

So what you can do to prevent the unnecessary damage?

Well, it’s simple. If you're going to be shelving any lithium-ion battery for a long time, try to leave it with at least 40 percent battery power to tide it over. And if you are going to maintain its best condition, minimize the deep discharge time except for the necessary calibration process one in a while. The smaller the discharge (low DoD), the longer the battery will last. If at all possible, avoid full discharges and charge the battery more often between uses.

2) Frequently fast charging your phone.

You might ask if it is bad to charge your phone overnight with wireless charging? Well, smartphones are, in fact, smart, so they know when to stop charging when you charge it overnight.

But according to the research of the US Department of Energy, “Running batteries at higher voltages also led to more ion path irregularities, and thus a more rapidly deteriorating battery." So, if you frequently charge the battery quickly, it will cause the lithium-ion batteries to corrode faster than they otherwise would, regardless of whether it is “overnight” or any other time.

Fast charging frequently may be harmful to your battery

So what should you do?

Hmmm, I guess you already known the answer -- Charge fast only when you really need to.

Lithium-ion batteries live their longest when charged and discharged at low speeds.

A high-voltage charger may cause your rechargeable batteries to lose their ability to hold a charge over time. But since fast charging is only at the beginning of a charge cycle and phones and their chargers are smart enough to only apply the extra voltage when it's useful, the damage should not be too bad.

Anyway, if you're not in a hurry, it's probably better for your battery to apply a slow and steady charge through a low-voltage charger.

3) The battery is overheating.

Each lithium-ion battery has a safe operating area, which establishes the highest temperature that your phone battery can endure, and unfortunately, their biggest enemy is extreme heat. So if you usually subject your phone to extremely high temperatures above 40 degrees Celsius, your phones battery life could be significantly affected or even degraded.

Be careful, don’t confuse the “overheating” I am referring to here with the standard “heat” caused by wireless charging which I mentioned earlier, here I am talking about the heat mostly caused by the weather.

Your phone battery doesn't like overheating

So how can we solve this problem? Well, you simply need to keep an eye on the temperature.

The temperature, especially extreme heat, has a big impact on your device's battery. If the place where you live has extreme weather (above 40 degrees or lower than 0 degrees), Try to keep the phone out of direct sunlight, or keep it away from the extreme freezing temperature as much as possible.

Anything else?

Frequent charging takes its toll on the lithium-ion batteries in our phones.

But it’s also harmful to leave your devices on the charging pad at 100 per cent all the time. Battery University considers that it is better not to fully charge because the higher voltage stresses the battery. Choosing a lower voltage threshold or stop the saturation charge altogether.

The Bottom Line

Wireless charging may still have some shortcomings when compared to wired charging, but you have to admit, it really has taken off and proved to be very convenient. Contrary to popular belief, it won’t damage the battery of your smartphone as it manages the process very carefully.

It is also important to choose a safe place to store your Smart Phone when charging it, whether wired or wireless and the PITAKA MagEZ Mount Qi pad is the perfect place to do it.

PITAKA is committed to making high-quality accessories for your Smart Phone and all of your every carries items. They have conducted extensive testing and designed the MagEZ Mount Qi to safely hold and wirelessly charge your Smart Phone in one simple, yet elegant solution.

The product family will soon be further enhanced with the MagPower, a wireless charging power bank, so keep following for news on when this exciting new product will be available for purchase.

So, if you are still concerned about how to keep your Smart Phone and it’s battery at it’s very best, follow my basic tips and get yourself a MagEZ Mount Qi charger, elegant, safe and the perfect solution for your home.

Have a look at how all three types of MagEZ Mount Qi work.

Ciao!

Claire

About the Author

Love of tea, movies, video games, and writing. I've been writing hundreds of online articles over the past few years, mainly about technology. If I'm not writing, you can probably find me reading or playing video games.

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  • Dheeraj Pareek on
    "Well i would disagree with one thing that wireless charger is Convenient. As You said “it really has taken off and proved to be very convenient.” The Wireless charger has small coils you need to carefully place the phone and the weird part is that even in 2019 only Samsung made a Wireless Power bank & the implementation is late though still kinda good. Now Back to the topic, i found that plugging a power source for the wireless charger and to the phone directly which is more convenient ?? According to me you can definitely say that Wireless Chargers are Cool, Smart Looking Or a Smart Way to Charge but Convenient hmm not sure about that, you still need to place the phone on the coils as its base is big but not the coil is big. We can say its a Cool, Smart Way & Sort of Convenient. Pardon for such big comment but i like to add my opinion to technology related articles as i am own a Tech Person."
  • Shashank Sagar on
    "I disagree with your point Dheeraj that only samsung has made Wireless Power banks. Mi has launched Wireless power banks and Qi Chargers usually come in specific sizes. It’s not hard to place a phone on them correctly. They are designed in such a way that you tend to keep your phone correctly."
  • Levy on
    "My dear friend, Fawzy Moughabghab, always opined over the meretricious joys of wireless charging and I completely concur."
  • YOSHIHIRO TAKASE on
    "なかなかよい商品ですね。 興味を、持ちました。 よい商品開発に期待します。"

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