Many modern people have "power anxiety". When going out, in addition to carrying a mobile phone, many people also carry a power bank. In the case of no power supply, a power bank can solve the power problem.
However, some people have also suggested that using a power bank instead of a charger to charge often will bring loss to the mobile phone battery. So, is there any basis for this claim? Will charging with a power bank often affect the phone? Today, the professor will give you some popular science on this issue.
Does the charging of the power bank affect the mobile phone?
To figure out this problem, we must first understand that the life of the lithium battery of the mobile phone is limited, and generally speaking, once it is damaged, it is irreversible. As for its lifespan, it is mainly related to the number of battery cycles, the depth of discharge, and the ambient temperature.
If you often charge your mobile phone when the battery is almost exhausted, or use the mobile phone in a high temperature environment, the mobile phone battery will be depleted accordingly.
After understanding the life of lithium batteries, let's take a look at the power bank. The power bank is mainly composed of three parts: battery cell (battery), circuit board and shell. The battery cell can be understood as a container that stores electricity; the shell protects the battery cell and the circuit board; and the main function of the circuit board is to adjust the voltage, and realize the discharge function by boosting and decreasing the voltage.
When charging devices such as mobile phones, the circuit board will adjust the output voltage of the power bank itself according to the input voltage supported by the device, and then supply power. The principle is the same as the charger.
It can be said that the power bank is a device that integrates power storage, boosting, bucking, and charging management. It has the function of a backup battery and a charger, which can be understood as a mobile power supply with a certain power reserve.
Therefore, if the power bank itself meets the safety standards and there is no quality problem, then often using the power bank to charge the mobile phone will not cause damage to the mobile phone battery.
Many people may question this. Since there is no problem with using the power bank to charge the mobile phone, why does it often appear that "the power bank is slow to charge and takes a long time", "after using the power bank to recharge the mobile phone, it always feels power consumption." Fast, battery is not durable" and other issues?
Why is the charging treasure slow?
Many people find that it takes longer to charge a mobile phone with a power bank than using a charger. In fact, this problem is mainly caused by the output power limit of the power bank.
Many power banks on the market use USB ports that support 5W power output. Compared with many chargers that support more than 20W power, the current output is significantly smaller.
Of course, with the gradual increase in the charging power of mobile phones, there are also many fast charging power banks on the market. For example, the magnetic suction wireless power bank launched by Lvlian this year supports Huawei 22.5W super fast charging and PD 20W in terms of wired charging. Two-way fast charging, charging the iPhone 12, it can charge 60% in 30 minutes, and the charging speed will not be slower than Apple's 20W charger.
In addition to power, the charging speed of the power bank has a certain relationship with the "electricity conversion efficiency".
The power conversion rate of the power bank refers to the actual conversion efficiency of the power bank when the internal voltage of the power bank is adjusted to a voltage suitable for the use of the device during the charging process of the device. The power bank with high conversion efficiency has higher actual discharge capacity and faster charging speed. If this conversion efficiency is too low, it may cause slow charging.
In addition, the quality of the battery cells of the power bank, as well as the wires that come with some power banks, will also affect the charging speed.
Some charging cables are thinner, and the resistance in the wire is large, which will also cause the charging speed to decrease. If the quality of the battery cells of the power bank is poor, the current is prone to unstable during the charging process. In order to stabilize the current, the circuit board will control the output, which will further slow down the charging speed.
Leading brands such as Apple and Lvlian generally use ATL batteries from industry giants. On the one hand, charging stability and battery life are guaranteed, and on the other hand, they are safer to use.
After charging with the power bank, the power is not durable?
Sometimes we will find that when we finally use the power bank to charge the mobile phone, the battery of the mobile phone runs out quickly. Why is this?
In fact, this problem is mainly related to our charging habits. Many people have the habit of "playing with mobile phones while charging with a power bank", especially after the emergence of magnetic wireless power banks in the past two years, they have gotten rid of the shackles of charging cables, and the scene of playing while charging is more common.
This is the problem. If the output power of the power bank used is small, it is likely to cause the power to "be beyond making ends meet", and the charged power will soon be consumed. This makes many people have the illusion that "the battery charged by the power bank is not durable".
The above is the power bank knowledge of FAST6097 popular science. After reading it, you can collect it and tell each other.