How does fast charging work on Samsung? Characteristics and differences between Quick Charge versions

Modern smartphones use many different technologies, including fast charging. For many mobile device users, the concept of fast charging is not clear, and there is an opinion that it is harmful to the device. Below we explain how this function is achieved and what its pros and cons are.

Contents

What is fast charging in phones?

Fast charging, as the name of the technology suggests, allows you to charge your phone faster. If you look at a regular power supply, you can see the values – 5V/1A. In other words, the power supply in such a smartphone operates with a voltage of 5 volts and a current of 1 ampere.

Models that support fast charging usually come with accessories that can provide it - a 5V/2A power supply and a cord with better throughput. At the output, the increase in charge speed is about 40%. For the modern rhythm of people's lives, reducing the waiting time for the battery to be fully charged is quite important, because waiting 2-3 hours is sometimes simply impossible.

Important! Don't think that buying a powerful charging unit and a high-bandwidth cable will automatically increase your speed.

Smartphones that support the function have a built-in controller that understands the current strength of the charger connected to it and allows you to safely charge the device. For such smartphones, it makes sense to buy a powerful unit and cable separately if the package includes standard accessories.

How fast charging technology works in mobile devices

By and large, the principle of operation of the technology is to increase the current or voltage. Depending on the manufacturer, the principle differs; some companies simultaneously increase the voltage and current. Process control is provided by a special function that must be supported by the device’s processor. It's no secret that the chipset is the heart of any mobile device. It controls not only fast but also wireless charging, and also participates in the operation of the camera and other components.

Curious! Fast charging is not just the presence of support for the function in the smartphone and the corresponding accessories, it is also special operating protocols.

Modern smartphones use several operating protocols; the most modern one is called Quick Charge 3.0. This is a company development Qualcomm and the point is that the chipset receives information about the state of the smartphone’s battery. Based on the data, he makes a decision - what current and voltage should be supplied to the phone.

Today we can distinguish the following technologies and protocols:

Quick Charge;
Turbo Power - Lenovo's development for Motorola smartphones, is based on Quick Charge 2.0 and is backward compatible with it;
Pump Express - technology from MediaTek, is considered the main competitor to Quick Charge;
Adaptive Fast Charging is the brainchild of the Samsung brand, used in S series smartphones from the Galaxy S6 and Note, starting with Note 4;
VOOC Flash Charging (Dash Charging) – BBK technology, used in OPPO devices;
Super Charge – developed by Huawei, used in Huawei P10 and P10 Plus, Mate 20;
Super mCharge - created by Meizu in 2017, the technology was presented to the world community, but until now it has not been used in smartphones.

Which smartphones support fast charging?

Due to the popularity of the technology, more and more buyers are looking at the availability of fast charging technology when choosing a smartphone. Of course, due to the presence of different creators of this function, there is no single list of devices that can quickly charge. There are also no specific agreements between manufacturers, which makes it impossible to quickly charge a phone that supports the function with accessories from another manufacturer. At the moment, this is a serious minus, and perhaps in the future some kind of agreement will be concluded between brands that will make it possible to equate different standards of charger operation.

Returning to the topic of support, you should understand one point - when buying a phone, you should make sure whether it has or does not have this function. If a year ago it could be said that fast charging is only available in flagships, today this would not be a true statement. In the fight for consumers, companies are introducing different features from expensive devices into more budget phones, so it’s best to see this for yourself. To do this, you need to look at the description of the smartphone on the official website or its specifications. Fast charging support is specified with battery information.

Important! When purchasing, you need to not only check whether the phone works with fast charging, but also make sure that the box contains the necessary cord and power adapter for this.

How to enable fast charging

Not every smartphone has fast charging technology. Therefore, the question itself - how to enable fast charging is not the most correct. The answer will be this: if it is not provided for, then nothing. Of course, the buyer can connect a more powerful power supply to his device, for example, a regular phone, and will even see that the battery charge time has decreased, but very soon another point will be revealed to him - the battery has deteriorated. If the device is not equipped with a function, then connecting a powerful unit for it will not bring anything good. The battery will quickly deteriorate.

However, if your device supports the technology, you can enable it in the device settings. By pulling the curtain up, the user needs to find the “gear” icon, which opens access to settings and go to “power”, “battery” or “optimization”. Here, among other things, there will be a separate item where you can enable or disable fast charging.

How to disable fast charging

If the device is equipped with fast charging, but the owner for some reason wants to turn it off, then the logical option is to use the advice above. Go to settings and uncheck the box or move the slider to the inactive position. But what to do if the manufacturer did not consider it necessary to add the option to turn fast charging on or off.

It is quite logical to resort to a simple but effective solution - take a weak charger from another gadget. If you have a tablet in the house, you can take its charger or buy the simplest option in the store. An important aspect of fast charging is a suitable charger and cable. Violation of one of the conditions leads to the fact that the processor perceives the accessories connected to it as simple and automatically charges in the most standard slow mode.

Is fast charging harmful for phones?

Operating technologies, support of the function by different phones, its advantages are of course interesting to the buyer, but the most important point is whether the mode spoils the smartphone’s battery. And this is where the opinions of experts differ. It’s no secret that it doesn’t really matter what current and voltage are supplied to the battery. These parameters themselves are safe for the device, but the parameter that can affect the lifespan of the smartphone is temperature. And it directly depends on the above parameters.

The processor's job is not just to control the charging process of the device. First of all, the chipset monitors the temperature of the battery during the procedure and if it exceeds the specified parameters, then the current and voltage decrease, the temperature begins to drop and the chipset increases them again or leaves them at the same level. It all depends on the specific technology. By and large, the security of the technology depends only on how well the processor tracks data.

Conclusion

Fast charging is a useful feature that does not harm the smartphone if the buyer uses high-quality accessories and provided they have the necessary operating standards for a particular manufacturer.

If the process is provided with accessories from the smartphone’s own package, then there is nothing to worry about. If you purchase a suitable cord and unit from third-party manufacturers, you should make sure that the gadget and accessories are compatible to avoid problems. Then no problems will arise.

Hello readers of our blog!

With the release of the new Quick Charge technology, a question has arisen that worries many users of mobile devices - is fast charging harmful for the phone? And in this article we will talk about exactly this and try to understand everything. Let's go...

The origin of the “myth” about the dangers of Quick Charge

Immediately after the release of this technology, there were many opponents, and in most cases, due to the possession of incorrect information.

Many people know that high currents harm the battery, but they do not know how high currents accelerate its wear and that this only applies to the final stage of the process.

Does fast charging kill your battery?

At the highest power, the battery is not fully charged, but only to 50-70% of the total capacity. Then the current decreases to a level similar to “slow” charging. Therefore, a smartphone equipped with the Quick Charge function can be charged halfway in just 30 minutes, but it needs to be fully charged in 1.5 - 2 hours or more, depending on the battery capacity.

With a normal charge, you will get 50% in 1 hour, and the phone can be fully charged in 2.5-3 hours. Following from the above, the goal of Quick Charge is not to “fill” the battery 100% in the shortest possible time, but to more sharply reduce the currents.

The goal of the technology is to quickly place the maximum possible amount of charge into the battery without harming it. If the maximum is reached, the smartphone charges in normal mode.

The process seems to be explainable, but then where do so many opponents come from and why do they claim that after using it the device has become worse at holding a charge? The answer is not the technology itself, but its misapplication.

The main reason for battery wear is user inconsistency.

The normal mode taught us to charge the device overnight or once every two or three days (for example, like in some popular gadget like Xiaomi Redmi 4x). And with Quick Charge, most often users find that charging three times to 50% is faster than charging once to 100% (about an hour or two hours instead of three).

After all, you can recharge your phone halfway and work with it for another half a day. Therefore, users use the device more and charge it more often. Therefore, NOT FAST, but FREQUENT charging reduces the performance of the device. Let's take a closer look.

The average battery life is 400-500 charge cycles, then the capacity begins to decrease by 20-25%. If you charge your phone once a day, 500 cycles will expire in 1.5-2 years. But if you charge and discharge the device more often, this time will be reduced by six months to a year. This means that if the device is not fully charged, but by 70-75 percent, the number of cycles before the capacity decreases will increase.

Experts advise not to even bring the charge to 100%, but to remove it earlier.

How to extend battery life

To ensure that your Android device serves you for as long as possible, follow a few simple rules:

Don't charge your phone too often. In order not to reduce the number of battery charge cycles, try to avoid short-term “top-ups”. 30-40 minutes minimum.
Do not use the gadget while charging. Overheating harms the battery. That is why flagships such as the Samsung Galaxy S8 and S7 automatically switch to the normal “slow” mode while using the device while charging.
Do not cover a charging gadget. At best, the device will overheat and wear out, at worst, a fire may occur.
You should not discharge your smartphone to zero. When the battery voltage drops below 2.7 volts, it harms the battery. It’s better to charge the gadget with 10-15% of the remaining charge.

These tips apply not only to phones that support Quick Charge technology, but to all devices with a lithium battery.

We hope that these tips and our statements will help you increase the service life of your device and it will continue to please you. Subscribe to us on VK, Facebook, Twitter and Youtube, share useful information with your friends. See you!

There was a site with you

When using smartphones intensively, and this includes the Internet, music and movies, it always needs to be recharged. One charge for one day is not enough for most phones with this type of use. And this is where so-called fast charging can help a lot.

Smartphone fast charging increases the voltage and current supplied to the battery within acceptable limits to achieve minimum charge time. The limits for increasing current and voltage are determined by the characteristics of the battery itself and the charging device to obtain maximum safety.

With an increase in screen diagonal and resolution, as well as processor power, the load on the battery has also increased. We no longer have enough conventional charging at 5 volts and 2 amps. With this normal charging, the battery takes at least two hours to charge. Therefore, manufacturers have adopted fast charging technology.

But questions also arose. How harmful is fast charging to batteries? Is it true that this can cause smartphones to explode? What's the difference between Qualcomm Quick Charge and MediaTek Pump Express, and which is better? How does fast charging actually work?

Today there are several fast charging standards. Many brands in the smartphone market are trying to create their own standard, both well-known and unknown Chinese companies.

Huawei has its own super charge with a maximum power of 22 Watts, Asus Bust Master allows you to charge devices with a voltage of 9 volts and a current of 2 amperes, Samsung has developed a similar Adaptive Fast Charging technology that can produce 5 or 9 volts and a current of 2 or 1.67 amperes, respectively.

How fast charging works

Any fast charging is based on the principle of increasing the current power transferred to the batteries. But the increase in power in each of these technologies is achieved differently. This can be an increase in voltage up to 20 volts, and in some places they increase the current strength to 5-6 amperes, and someone combines these methods and increases both the voltage and the current strength. Let us recall that electrical power can be determined by multiplying the voltage in volts by the current in amperes, P=U∙I.

All fast charging technologies include:

smart controller, most often it is built into the processor
a special charger capable of delivering the required current
powerful cable capable of transmitting high power current

Harm from Fast Charging

And yet the first question is whether fast charging is harmful to the battery. And here the situation is ambiguous. There are a number of studies that prove the negative impact of fast charging on the battery, but there are also studies that completely refute this.

Modern lithium-ion and lithium-polymer batteries do not care at what current and voltage they will be charged. If you take a laptop, they have the same lithium-ion batteries, only bigger. But if you look at the parameters of the charger, you will see the current strength is within 4-5 amperes and the voltage is about 20 volts, and the most evil fast charge technologies produce 12 volts and 2-3 amperes, and then only during the first 15-20 minutes, after which they switch to a lower current.

But it is also true that smartphones can explode from fast charging. Heat has the most detrimental effect on the battery; it kills the battery and reduces its capacity.

Overheating is the main cause of fires and explosions. All modern fast charge technologies are equipped with a huge number of overheating protection systems, but why do more and more photographs of burnt-out devices appear on the Internet? Because no system can protect a gadget from the influence of a user who charges the device with whatever and at random.

So never skimp on chargers and cables. Ideally, always charge your smartphone with the original charger and cable, and do not charge a damaged device. If the smartphone case is bent, cracked or broken, then it is better not to take risks and not use such a device at all. Never leave a charging smartphone covered with anything, in a thick case or in a bag.

The second reason gadgets break down is low-quality components or defects.. If you buy a phone for $50, then you shouldn’t hope that it has a good battery. But top brands also have shortcomings. You can recall the sensational story about.

Technology comparison

Now let's look at 3 promising fast charging technologies. These are Qualcomm Quick Charge, the slightly less common Pump Express from MediaTek and the VOOC Flash Charge technology found only in Oppa devices.

Oppa VOOC Flash Charge

Let's start with Super VOOC Flash Charge. Although this is less common, it is the most interesting, fastest and most careful technology.

At the moment, Oppo has already presented the second version of this technology. It allows you to fully charge a 2500 mAh battery in 15 minutes, and in 5 minutes the battery reserves can be replenished by 45%, while the smartphone is charged at a completely standard voltage of 5 volts.

This voltage allows the battery not to heat up. These results were obtained through the use of special batteries that can withstand current up to 4.5 amperes, which is almost 2 times more than in standard charging. The batteries have eight contacts at once and are divided into several cells, which are charged in parallel. It is said that Oppo transferred the technology to OnePlus, and it tried to develop its own variant of Dash Charge based on VOOC Charge.

MediaTek Pump Express

The next fast charger is Pump Express. It does not depend much on specific batteries and materials from which connectors and cables are made.

The current Pump Express 3.0 charges batteries from 0 to 70% in just 20 minutes. The technology uses a voltage of 3 volts with a current of more than 5 amperes. Using Pump Express, you can charge the battery directly, bypassing intermediate circuits, without affecting the standard built-in charging circuit. But this option is only possible when using the USB Type-C connector, because it can greatly reduce energy leakage and reduce heating. There are 20 built-in protection systems to protect against overheating.

The first processor to support Pump Express 3.0 is Helio P20; it is stated that subsequent chipsets will also receive support for this standard.

MediaTek sells its processors in bulk to any smartphone manufacturer, so Pump Express should be found in many MediaTek smartphones, but in practice this is not the case. Why?

Yes, because the processor supports fast charging, but manufacturers do not implement this feature due to the fact that they do not want to develop complicated power circuits for the needs of Pump Express and thereby increase the cost of the device. Perhaps manufacturers are afraid for the safety of batteries, which are not always made well in budget phones. Of the smartphones made by MediaTek, only a few have fast charging technology.

Qualcomm Quick Charge

Qualcomm has achieved the greatest success in the development of fast charging. The development of Quick Charge technology has been going on for 4 generations and has been brought to perfection.

All versions are standard backwards compatible, that is, you can use a version 4 charger with a phone that only supports version 1, in which case charging will switch to Quick Charge 1.0 mode.

The Qualcomm standard is supported by a huge number of smartphone and accessory manufacturers. For example, Samsung retains support for Quick Charge, despite the fact that it has its own developments.

Qualcomm introduced the first version of the standard back in 2013, since then the implementation of Quick Charge has not changed much. Integration into a mobile device occurs through a separate microcircuit or together with a Snapdragon chip (central processing unit) and a special adapter that can deliver high power current.

With each new version of the Quick Charge standard, it gets faster, smarter and safer. For example, the first generation could charge devices only at 5 volts and 2-2.5 amperes, the second generation allowed the use of increased voltage up to 12 volts, or rather, the controller itself chose the required value from three fixed ones at 5V/9V/12V with a maximum current of 3 ampere In this case, the permissible maximum power of the power supply can reach 18 watts. But with such power, heating problems became acute, and in subsequent versions of the standard, engineers paid more attention to protecting the battery from overheating.

The main innovation of Quick Charge 3.0 It's not the increased charging speed, but the technology's ability to save energy by avoiding excessive heat generation. The implementation of this approach was made possible by the new INOV technology, that is, the intelligent determination of the required voltage. Thanks to this innovation, data is exchanged between the charger and the device when there is a request for the required voltage, which can be anything in the range from 3.2 to 20 volts in 0.2 volt increments. Thus, Quick Charge 3.0 allows you to dynamically adjust to the required voltage.

As the battery charges or warms up, the controller gradually reduces the required voltage. This is also why the last 20% takes longer to charge. As a result, charging occurs carefully, the battery does not overheat, and its wear is minimized.

And already last year, devices with support for Quick Charge 4.0 appeared, the technology is implemented in the Snapdragon 835 chip. The new standard adds several degrees of protection against overheating, and has a built-in system for checking cable quality, which will prevent the device from being charged from a low-quality or damaged cable.

But the main novelty in Quick Charge 4.0 will be support for the USB Power Delivery standard. This is a fast charging technology developed by Google. Perhaps in the future PD will become the basis for combining different fast charging standards; it would be good to use one charge for any standard.

Development of mobile power supplies

What will happen in the future? I would like to believe that all smartphone batteries will be based on Graphene, such batteries will boast the properties of super capacitors, and will take a matter of minutes to charge. They are much cooler than modern lithium-ion batteries, do not lose their capacity even after 2000 charging cycles and have a higher energy storage density. Perhaps such batteries will appear in 10 years, and we will switch to them; there are already prototypes.

And there are also developments in the production of microscopic batteries based on radioactive elements. You don’t have to charge them at all, you just need to change them every 2 years, but these are developments of the distant future.

Nowadays, RuleSmart visitors often ask questions like this: how to enable fast charging on a smartphone. Of course, there are those who want to turn it off. In both cases, it all looks quite interesting, if not comical.
First, let's figure out what's what. Fast charging technology allows you to increase the speed of filling the battery capacity, often by multiples. This technology is relevant, at least, for batteries with a capacity of over 3000 mAh. Everything below does not make sense, you can use 1A there.

How to enable fast charging

If your smartphone does not support this technology, then no way. Well, you can’t enable software that is not supported by hardware. But don’t be upset, you can take a more powerful power supply, if the kit comes with 1A, then take 2A and the charging time will be reduced by approximately half. But don’t forget that this will not add “life” to the battery, but will shorten its service life.
Now let's move on to considering the technology itself. In fact, the “trick” is called Quick Charge - this is a development by Qualcomm, which became the first among fast charging standards. The technology is based on increasing the current strength. Nothing new, just small software improvements with a minimum of movement on the hardware.

Quick Charge 2.0: battery charges up to 50% in approximately 30 minutes

Quick Charge 3.0: Battery charges to 80% in about 35 minutes

Quick Charge 4.0: 20% more efficient than the previous version and hardly heats up the case.

All the “shamanism” is concentrated in the power supply itself, while control is given to the processor (from Qualcomm, of course). Significant hardware work was carried out here.
The main function of Quick Charge is to recognize the current state of the battery and adjust the power supply correctly. In this case, charging from 0 to 60% will be much faster than from 60 to 100%. In this situation, the battery will be “filled” from 0 to 50% in 30 minutes, and thoughtful power regulation will not allow high voltage and current to harm the battery.

Which smartphones support fast charging?

Such smartphones include, for example, Xiaomi Mi6, Xiaomi Mi Max, HTC 10, Meizu MX6, LG G6, Moto X Force, Galaxy S8 and many others. In any case, Qualcomm's website provides a comprehensive list.

How to disable fast charging

Not every device can boast the ability to programmatically disable fast charging. However, if there is such an opportunity, then just go to the Settings - Battery (Power or Battery) section, where you can configure the whole thing. In addition, you can simply start using a regular 1A adapter, which will charge your gadget for a long time, but will not shorten the battery life so much. By the way, fast charging also leads to excessive heating, which is not good.

Taking a long time to charge your phone is a very common problem among users of modern gadgets. There is often not enough time to recharge, and the battery burns out at the most inopportune moment.

Fortunately, smartphone manufacturers, including the Xiaomi brand, solved this problem when they added the function Quick Charge– ability to quickly charge your phone.

What is it

Xiaomi Quick Charge– the ability of Xiaomi smartphones to charge the battery many times faster than normal charging, reaching the full battery in almost 30 minutes.

Its main task is to fill the battery with the volume that will not damage it as quickly as possible.

How does Quick Charge work?

The operation of this option is based on the large consumption of current power during the power supply process itself (limit – 20W). If the battery is completely discharged, at the beginning of the power supply the maximum power will be absorbed, and less and less as the power supply progresses.

Current power according to the formula– product of current (I) and voltage (U). That is, by increasing the current power, either the voltage or the current increases, and in this situation the battery quickly receives the necessary charge of energy.

A visual explanation of this principle:

How did the creation of Quick Charge begin?

When the Quick Charge function was in its infancy, developers tried different methods to reduce the time it takes to recharge the battery. Originally, Quick Charge was based on increasing the current. The first power supplies had the ability to receive a current of 2A at a voltage of 5V. As a result, the required power was 10 watts.

But this method was unpromising, since subsequent work with the current required a change in the cross-section of the wire, and it was decided to increase the voltage instead of the current.

Since it was impossible to produce the maximum voltage “out of the blue,” special controllers began to be added to the motherboard, which are capable of receiving a voltage greater than the usual 5 Volts, converting it into the required battery charge.

Quick Charge technology versions and maximum power absorption

By transforming Xiaomi fast charging, the developers also increased its capabilities, that is, the consumed current power.

Characteristics and differences between Quick Charge versions

Today there are 4 lines of this technology, but for the most part the manufacturer Xiaomi uses only three:

Quick Charge 1.0– version presented in 2013. Literally immediately won consumer sympathy and was used in many phones. It allowed the device to be charged 40% faster than usual, which means that the phone could be half charged after 40-50 minutes. It was in almost every phone with a Snapdragon processor.
Quick Charge 2.0– an improved version of fast charging helped charge the gadget even faster. The charge was at half capacity after 30 minutes.
Quick Charge 3.0- very similar to the previous one, with the exception of a new significant function “INOV” - Intelligent Negotiation for Optimum Voltage - the most accurate selection of the voltage required for charging and monitoring the “well-being” of the gadget. After 20 minutes, the phone can be charged by 50%, and after half an hour – by 70%!
Quick Charge 4.0– version based on the new Snapdragon 835 processor. Fills the battery halfway after 15 minutes.

In mid-2017, the manufacturer presented a new version from Qualcomm – Quick Charge 4+, which can charge 2750 mAh batteries by half in less than 15 minutes, and with a 5-minute charge the phone can last up to 5 hours.

INOV technology – Intelligent Negotiation for Optimum Voltage

INOV technology- this is the new ability of Quick Charge to establish a relationship with the phone during the power process - the unit receives the necessary data on the state of the battery, with the help of which it monitors the received power, current, voltage, and temperature of the smartphone.

A similar technology to INOV is Battery Saver Technologies.

Smartphones that support Xiaomi Quick Charge

Unfortunately, not all Xiaomi phones support the fast charging option.

Quick Charge Version 1.0:

Xiaomi Redmi Note Prime;

Quick Charge 2.0 version:

Xiaomi Redmi 5;
Xiaomi Redmi 4x;
Xiaomi Mi Note;
Almost the entire Mi line.

Quick Charge 3.0 version:

Mi Note 3;
Xiaomi Mi Mix 2;
Xiaomi Mi Mix;
Xiaomi Mi Max;
Xiaomi Mi Max 2;
Xiaomi Mi 6.

Quick Charge 4.0 version:

Already installed on: Xiaomi Mi 8;
Probably will be installed on: Xiaomi Mi 7, Mi Note 3 Plus, Mi 6 Plus.

Full list of models:

Some users of the Xiaomi a1 smartphone, after updating the firmware to Android Oreo, thought that the new firmware version supported Quick Charge 3.0, since when the phone was charging, the saying “Fast charging” appeared. However, this is a misconception. Testing attempts have proven the opposite, which indicates the absence of a fast charging function on the Xiaomi a1 phone.

If your phone model is not in the list, you will not be able to add/purchase Xiaomi Redmi fast charger.

How to enable fast charging on Xiaomi

In order to activate the fast charging function on a Xiaomi smartphone, you do not need to go into the settings or use the help of a PC.

Xiaomi phones either have this feature right away or they don't. Quick Charge is located in the power pack itself.

To make sure that your smartphone is equipped with this option, inspect the unit. It should contain data on current (A) and voltage (V). If these parameters, when multiplied, give a power above 10 Watts (while conventional chargers absorb only about 4.5 Watts), and the fast charging icon is visible, this is indeed a Xiaomi fast charging cable, and you are the happy owner of a smartphone with this function.

Is it worth using a power supply that has a fast charging function with regular phones?

If your smartphone is not in the above lists, it means it is not equipped to charge the battery in a short time. And an attempt to do this using a much earlier released phone with a special block Quick Charge can lead to overvoltage, fire, or damage to the gadget - it will simply stop turning on.

Does using this function affect the smartphone itself or the battery?

There are a lot of scary opinions about Quick Charge:

The fast charging option also works in the opposite direction - it absorbs battery power faster;
Damages the battery and causes it to wear out faster;
It is impossible or dangerous to charge your phone using Quick Charge if it is turned off.

All of the above does not have any substantiated arguments and are myths. Moreover, a huge number of people are working on the development of fast charging functions, and many tests and experiments have been carried out to prove that the phone and its battery are completely safe when using Quick Charge or using other innovations in this industry.

The only thing you should avoid when recharging the phone in this case is thick, dense cases and any objects located on the phone itself (pillows, clothes, blankets), as this can also lead to excessive heating or overvoltage.

Fast charging function does not work

There are several reasons why Quick Charge refuses to work:

First of all, the phone will not charge when relying on this function due to the initial lack of such an option. If this option is important to you, when purchasing a phone, check with your consultant in advance about its availability in the selected model. As mentioned earlier, simply purchasing a charger with this function and putting it into use does not bring anything good.
If your phone is included in the list of models with Quick Charge, but fast charging still does not occur, make sure that you are using an original Xiaomi power supply. Don't forget to also find the necessary data about power, current and voltage.
Not updated firmware. Some Xiaomi smartphone models, even those with the ability to charge the phone using Quick Charge, must have the software updated to the latest version.
The fast charging option may be disabled if you use the phone fully while it is powered, or if there are foreign objects on it;
Problems with the firmware or with the phone itself.

What not to do while charging

Many of the myths mentioned above are born from the incorrect use of the fast charging function.

To avoid experiencing similar battery failures in the future, you need to be able to properly handle Quick Charge technology.

When using this function, pay attention to the following:

Using the phone during power supply (especially excessive use) can lead to overheating, as mentioned earlier, and disrupt the joint operation of the phone with the power supply;
Charging the phone only at maximum power - if you constantly charge the phone only at the expense of this very maximum power, which arrives in a fairly short time, and by half, the operation of the fast charging function may also be disrupted and will soon wear out, so resort to using this function only if necessary.