Is Wireless Charging Bad For Battery Health? – Myth and Facts!

Wireless charging gives a tangle-free charging experience, but battery health is always a concern. But, many misconceptions about wireless charging are already floating over the Internet.

In this guide, I shall answer your doubts related to wireless charging. If your smartphone supports wireless charging, this guide is very helpful for you.

Over the years, wireless charging has evolved, and premium phones have started providing this feature, but the myth among the general public is that it will damage their battery.

Many people believe that wireless charging damage the battery, but that’s not entirely true.

If wireless charging is so bad for battery health, why will smartphone companies provide it in their premium devices?

It’s totally safe to enjoy the convenience of wireless charging as long as your phone is not overheating. All modern and qi-certified wireless charges come with built-in heat management features that prevent your smartphone from overheating. If you’re using a non-certified wireless charger, then it may degrade your phone battery health in the long run.

Is Wireless Charging Bad For Smartphone Battery Life?

Smartphone Wireless Charging

Wireless charging is the future for smartphones or, for that matter, any device, and it’s going to change very quickly.

We have been listening to the innovation in wireless charging technology for the past 10 years, but it’s not much popular yet.

Wireless charging indeed causes heat but whether it affects the smartphone battery life is not true entirely.

Zdnet conducted a thermal test with wireless charging, and the phone was heated up to 30°C to 32°C, which is an acceptable range.

You may feel your smartphone warm on a wireless charger, but that doesn’t cause battery degradation. But, if your phone is overheating on a wireless charging pad, it may affect the battery power holding capacity.

Does Wireless Charging Overheat Your Smartphone?

Wireless Charging Overheating

Wireless charging is based on inductive coil technology placed on the back of the phone, and the charger and the electromagnetic induction are used for energy transfer.

Electromagnetic induction energy transfer mode isn’t much efficient, and almost 10% to 20% power loss occurs in the form of heat.

If a wireless charger isn’t passed Qi certification or other standard wireless charging certifications, the power loss may go up to 40%.

A non-certified wireless charger can overheat your smartphone and damage the battery’s health in the long run.

Does Overheating Degrade Li-ion Battery Health?

Lithium-ion batteries are rechargeable batteries used in various electronic devices, including smartphones.

Overheating definitely affects and degrades the battery’s performance, and durability, even catching fire sometimes due to excess temperature around the battery.

Also Read: Why Does My iPhone Gets Hot While Charging?

How To Prevent Your Smartphone From Overheating On Wireless Charger?

As smartphone wireless chargers’ popularity is growing, people also have concerns about the overheating problem caused due to them. 

Wireless charging generates more heat than conventional wired charging. But the heat generated is under the manageable limit.

Let’s see how you could manage the overheating problem with wireless charging-

1. Disable Radios

Wireless chargers heat your phone because electromagnetic induction conflicts with smartphone radios like Bluetooth, WiFi, NFC, etc.

It would be great if you disable these radios or switch off your phone or keep it in flight mode to avoid overheating.

2. Maintain Your Battery Between Sweet Spot Zone

Lithium-ion batteries never like to be fully charged or completely drained. The sweet spot zone for lithium-ion batteries is 20% to 80%.

So, if your smartphone battery percentage drops around 20%, place it on a wireless charger and take it off once the battery recharges to 80%.

3. Use Qi-certified Wireless Chargers

The market is full of cheap wireless chargers, but some standard like Qi certification ensures that devices and chargers always work together for simple and efficient charging.

So, if you use a cheap charger that is not Qi-certified, then it will generate heat, and overheating is bad for your smartphone battery’s health.

Before purchasing a third-party wireless charger, check whether it’s qi-certified. If not, avoid it and use a high-quality wireless charger that passed various certification tests.

4. Avoid Using Your Phone While Charging

Your smartphone processor is already doing lots of computation while charging.

If you use your phone while charging, the processor has to handle additional tasks, which leads to overheating.

So the same happens with wireless charging, which causes more heat than wired charging. So avoid using your phone while charging.

5. Charge Your Phone in a Cool Environment

You could also try charging your phone with a wireless charger in a cold environment, like with your AC on.

The temperature difference between your phone and the environment increases the heat dissipation rate.

Hence, heat generated by wireless charging immediately dissipates and keeps your phone from overheating.

How To Enhance Smartphone Battery Lifespan?

Every smartphone is known for the fact that the battery will degrade as time passes and will last for half a day or three to four hours after a few years.

So you must know the small hacks or tricks to enhance your phone’s battery lifespan.

Here are some tips that will help you achieve that-

1. Avoid Superfast charging

Now the smartphone comes with 120W super-fast chargers that juice up your battery in 10 to 15 minutes.

High-wattage chargers can charge your phone very quickly, but there is a side effect to it as it heats the phone. So use it when it is required but prefer not to use it regularly.

2. Don’t use your phone while charging

You should avoid using your phone for calling or any other activity when it’s connected to the charger.

It will slow down the charging speed and eventually end up heating your mobile phone, affecting your battery life adversely.

3. Avoid draining your battery fully

Almost all phone batteries are made up of lithium-ion batteries. And draining and charging above 100% stresses the battery and reduces its lifespan.

So to enhance your battery lifespan, keep it between 20% to 80%, which is the ideal mark. 

4. Keep Your Software Up-to-date

Every smartphone manufacturer releases software updates to fix known bugs. If you want battery longevity, you should keep your software up-to-date.

5. Do not charge overnight

Although smartphones and charger companies provide battery protection integrated circuits to prevent overcharging, keeping your phone battery at its maximum capacity degrades your battery health. So, avoid leaving your smartphone plugged in overnight.

Frequently Asked Questions

Is Wireless Charging Bad For iPhones?

Wireless charging indeed generates more heat than the wired charger, but the heat didn’t affect the iPhone as the heat generated is manageable. So it’s a myth among people.

Is Wireless Charging Bad For Samsung?

Samsung high-end phones also provide an option for wireless charging, and it’s totally safe and doesn’t affect the device’s battery life.

Is Wireless Charging Inefficient And Slow?

Yes, wireless charging is inefficient and slow as compared to wired charging. In wireless charging, there is no direct transfer of power. Almost 10% to 20% of power loss occurs in the form of heat, which means it takes more time and electricity to charge fully.

Is Wireless Charging Bad For The Environment?

Wireless charging doesn’t affect the environment directly, but a few studies observed that it consumes 47% more power than wired charging. So that means more power is required to charge a phone, and with billions of phones worldwide, it will affect the environment.

Is Wireless Charging Safe Overnight?

Leaving your iPhone overnight on an MFI-certified wireless charger is safe. It has smart features, so once your phone stops drawing current, the pad will stop giving current, but it’s not good in the long run.

Conclusion

Wireless charging is totally safe for batteries as long as you’re using a standard wireless charger. Cheap wireless chargers may overheat your phone, which damages the battery’s health.

Moreover, if you want to enhance your battery life, follow the tips provided above, like keeping the charging between 20% to 80%, avoiding fast charging, and keeping your apps and other functions closed if you are not using them.

About Daniel

Daniel is a tech enthusiast and repair technician who loves experimenting with various gadgets and home appliances. On this blog, he shares a troubleshooting guide for software and hardware faults.

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