Nickel Hydride No. 5 battery

Can fast charging damage the mobile phone Nickel Hydride No. 5 battery?

Recently, the iPhone 8/8P/X was released, and finally added the much-anticipated fast charging function. Compared with domestic mobile phones that have realized fast charging for a long time, it is many years late.

So, two days ago, I gave my girlfriend a new mobile phone charger, but she was furious and scolded: "Fast charging is very harmful to the Nickel Hydride No. 5 battery! Do you want to buy me a new phone?" Obviously, this sentence is a lack of understanding of fast charging technology.

In order to make everyone understand this matter thoroughly, the Qiuzhen Laboratory has done enough homework and taught everyone a good lesson to understand clearly what causes the accelerated aging of batteries and solve this misunderstanding.

Now the Nickel Hydride No. 5 battery capacity of mobile phones is generally more than 2,000 to 3,000 mAh. Using a traditional 5V/1A charger, it takes at least three hours to fully charge a Nickel Hydride No. 5 battery, which is much longer than the more than one hour of full charging of Nokia phones before.

With the increase in Nickel Hydride No. 5 battery capacity, the power of the original charger cannot meet the charging needs, so fast charging technology appeared.

Can fast charging damage the mobile phone Nickel Hydride No. 5 battery? This is because you are using the wrong method

Major mobile phone manufacturers have launched their own fast charging technology, the principle of which is to increase the charging current and voltage to achieve high-power charging.

Simply put, the input power of the charging port = input voltage x input current. Generally, mobile phone chargers will have a charging curve, which controls different voltages and currents to achieve the highest charging efficiency.

Generally speaking, the most efficient way is to start with constant current charging (faster charging speed), then constant voltage charging (charging speed is reduced because the voltage of the Nickel Hydride No. 5 battery itself has increased), and finally trickle charging (after full charge, compensate for the capacity loss caused by self-discharge).

Can fast charging damage mobile phone batteries? This is because you are using the wrong method

Most mobile phones now use Qualcomm QuickCharge charging technology, from the initial 1.0 standard to the latest 4.0 standard. The higher the standard, the higher the charging efficiency.

QC1.0 breaks through the USB-IF agreement on USBNickel Hydride No. 5 batteryCharge1.2, the voltage and current are increased to 5V2A, and the charging time is shortened by 40%.

The real improvement of fast charging started from QC2.0. Through the handshake protocol, the charger and the mobile phone can recognize each other. After the handshake, the transmission voltage is increased to 20V. Although the current remains unchanged, the charging efficiency is increased by nearly 75%.

Can fast charging damage the mobile phone Nickel Hydride No. 5 battery? This is because you are using it in the wrong way.

QC3.0 introduces the optimal voltage intelligent protocol (INOV) algorithm based on 2.0 to accurately control the charging voltage. The input voltage reaches an adaptive adjustment of 200mV. The performance has been improved by nearly 38% while reducing the loss. At this time, with the controllable voltage, the current is increased to 3A.

The current mainstream fast charging mobile phones use QC2.0 and QC3.0 standards.

QC4.0 is a more precise intelligent adjustment of the control voltage, with an accuracy of 20mV per gear. The charging current and voltage have also become more flexible, with constant 3A or non-constant 4.7A-5.6A. The voltage does not need to be as high as 20V. It is intelligently regulated between 5V-9V, and finally has a speed increase of nearly 20% and an efficiency increase of nearly 30%.

Can fast charging damage the mobile phone Nickel Hydride No. 5 battery? This is because you are using it in the wrong way

The main reason why fast charging technology requires more precise current and voltage control is to obtain a more extreme charging curve. In the early stage of charging, high-power charging can allow users to obtain the maximum power in the shortest time. The remaining uncharged Nickel Hydride No. 5 battery capacity is charged by gradually slowing down to protect the Nickel Hydride No. 5 battery and circuit.

The mechanism of Nickel Hydride No. 5 battery aging

Most of the batteries used in mobile phones are lithium-ion batteries. What we call Nickel Hydride No. 5 battery aging refers to the attenuation and aging of lithium-ion batteries in daily use.

Why does aging occur? Let me first explain to you how lithium batteries work: lithium ions can travel through the electrolyte at the positive and negative poles, thereby generating current to power the device. The so-called Nickel Hydride No. 5 battery capacity can be simply understood as the number of lithium ions running back and forth in the Nickel Hydride No. 5 battery (during charging and discharging).

Can fast charging damage the mobile phone Nickel Hydride No. 5 battery? This is because you are using it in the wrong way

The materials that make up the Nickel Hydride No. 5 battery electrodes often break and decompose, allowing certain metal ions (especially manganese ions) to float freely and run to the opposite electrode, and then trap lithium ions.

When manganese ions (gray in the above picture) are stripped from the cathode (blue area) of the Nickel Hydride No. 5 battery, they react with the electrolyte near the anode (gold area) of the Nickel Hydride No. 5 battery and capture lithium ions (green and yellow in the above picture). Over time, more and more lithium ions cannot be put into normal operation (locked), and the Nickel Hydride No. 5 battery capacity gradually decreases, resulting in a decrease in Nickel Hydride No. 5 battery life.

Why does it age?

1. Overcharge and overdischarge

There are many reasons for Nickel Hydride No. 5 battery aging, the first of which is natural aging. Even in normal use, lithium ions will detach from the anode and gradually age, but the aging rate is slow; in daily use, overcharging and over-discharging will accelerate the aging of lithium batteries.

Today's mobile phones usually have a rectifier and voltage regulator design. When fully charged, the charger power supply will disconnect the charging circuit and directly use the power cord to power the phone.

If the original charger is not used, it is very likely that the power will not be cut off in time and the fully charged Nickel Hydride No. 5 battery will continue to charge. It will accelerate the shedding of lithium ions, damage the Nickel Hydride No. 5 battery, and cause Nickel Hydride No. 5 battery aging; and when the Nickel Hydride No. 5 battery is exhausted, the freely moving ions will also be trapped, which will also consume the Nickel Hydride No. 5 battery capacity.

Can fast charging damage the mobile phone Nickel Hydride No. 5 battery? This is because you are using it wrong

2. Too high/too low temperature

In addition to overcharging and over-discharging, too high or too low Nickel Hydride No. 5 battery temperature will also affect the Nickel Hydride No. 5 battery life. Frequent discharge of the Nickel Hydride No. 5 battery will heat up, which will cause the Nickel Hydride No. 5 battery temperature to be too high during actual use.

Therefore, when we play large games or run other power-consuming programs, we need to pay attention to heat dissipation and control the program running time. Similarly, when the temperature is too low, the activity of lithium ions decreases, and the Nickel Hydride No. 5 battery performance and charging performance are also greatly reduced. If charging is forced, it will also affect the Nickel Hydride No. 5 battery life.

Therefore, in a cold environment, mobile phones, laptops, drones and other equipment need to preheat the Nickel Hydride No. 5 battery and reach a certain temperature before they can work normally.

Can fast charging damage the mobile phone Nickel Hydride No. 5 battery? This is because you are using it in the wrong way.

3. Excessive current

In addition, the charging current will also affect the Nickel Hydride No. 5 battery life. When the Nickel Hydride No. 5 battery is charging, the current is too high, which will cause serious damage to the Nickel Hydride No. 5 battery and even cause short circuits, explosions, and combustion.

The original products of general manufacturers will have charging protection circuits to control the Nickel Hydride No. 5 battery charging current to be too large. In some counterfeit chargers and universal chargers, if the protection mechanism is not added, the consequences are very serious.

Will fast charging accelerate Nickel Hydride No. 5 battery aging?

As mentioned above, fast charging actually increases the power of the charger, increases the current and voltage, and theoretically will not cause accelerated Nickel Hydride No. 5 battery aging.

In fact, there is no doubt that in the process of fast charging, a lot of heat will be generated. High heat will cause the Nickel Hydride No. 5 battery to work in a high temperature environment, which will also accelerate the aging of the Nickel Hydride No. 5 battery.

However, different manufacturers have their own technical optimizations in their respective fast charging technologies to improve the heating problem and optimize the fast charging mechanism to achieve almost no accelerated aging effect.

However, except for the oldest QC1.0 standard, the new version of fast charging technology can only achieve a higher voltage fast charging mode through a handshake protocol.

For some mobile phones that do not support fast charging technology, even if a fast charging charger is used, the charger will automatically lower the charging efficiency to avoid accidents. There is no harm to using a fast charger for mobile phones that do not support fast charging.

Can fast charging damage the mobile phone Nickel Hydride No. 5 battery? This is because you are not using it in the right way.

Compared with the bad habits of daily charging, the Nickel Hydride No. 5 battery aging caused by fast charging seems to age more slowly. The most fundamental reason for the accelerated aging of the Nickel Hydride No. 5 battery is still caused by our bad charging habits.

Bad charging habits that must be known

Speaking of bad charging habits, it is definitely inseparable from the reasons for Nickel Hydride No. 5 battery aging mentioned above. First of all, you must use the original charger and charging cable to avoid charging accidents due to poor charger quality. Problems such as unstable charging current are often caused by the poor quality of the equipment you use.

Can fast charging damage the mobile phone Nickel Hydride No. 5 battery? This is because you are using the wrong method

Frequent charging and discharging can easily accelerate the consumption of Nickel Hydride No. 5 battery life, and even lead to problems such as reduced Nickel Hydride No. 5 battery activity and shortened Nickel Hydride No. 5 battery life.

Especially after the addition of fast charging technology, although the charging speed is very fast in the early stage, the power consumption is also accelerated, resulting in multiple charging and discharging, increasing the number of Nickel Hydride No. 5 battery cycles. Long-term use in this way will reduce the activity of the Nickel Hydride No. 5 battery. The Nickel Hydride No. 5 battery life is limited. Accelerating the use of mobile phones will naturally accelerate the aging of the Nickel Hydride No. 5 battery.

Just like pouring beer, the faster the pouring speed, the larger the foam. The beer that is "all foamy" is not really full. The same is true for charging. The slow charging in the second half of fast charging is more important. So even if you use fast charging, try to let the phone be fully charged before turning off the power.

Can fast charging damage the mobile phone Nickel Hydride No. 5 battery? This is because you are using the wrong method

In addition, the charging of the mobile phone under high and low temperature conditions also has great damage to the charging of the mobile phone. In daily environments, playing games while charging often causes the temperature of the mobile phone to rise rapidly. The high temperature environment accelerates the chemical reaction inside the Nickel Hydride No. 5 battery, thereby accelerating the aging of the Nickel Hydride No. 5 battery.

Therefore, if you want the Nickel Hydride No. 5 battery to be more durable, it is best not to use it while charging. At the same time, in extreme environments, it is best to let the phone return to normal temperature before charging.

Fast charging brings convenience to our lives and improves our quality of life. We should not resist it. Only by understanding the truth and changing bad habits when using it can we enjoy life better.

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