Nowadays, people often encounter the situation that the mobile phone battery is not enough. Some people connect the mobile phone to the charger every day. With the continuous improvement of the performance of smart phones, the lack of battery has become a difficult problem to solve. Most users’ mobile phones are half-day, and some may be used more frequently. In order to solve the problem of no electricity, Some people will be equipped with a mobile power supply, and many more people have developed the habit of using it during the day and charging at night, so how long does it take to connect the charger to the battery? Next, this article will give you some knowledge about mobile phone batteries, and put forward some of the most ideal charging suggestions for your reference.
Cell phone batteries are now using lithium-ion batteries. The advantage of this type of battery is that it is small and rechargeable. It is suitable for portable electronic products such as mobile phones. This kind of lithium-ion battery does not have a memory function, so it is very casual to charge it. Basically, it is no problem when you want to charge it.
In recent years, with the use of various fast charging technologies, many mobile phones can be fully charged in one to two hours, so many friends may have questions. Can I really put my mobile phone with the charger for one night?
Lithium battery life and main influencing factors
The life of a lithium battery is measured by the charging cycle. The so-called charging cycle refers to the process of charging all the battery from full to empty and then from empty to full. If you have a 1000 mAh battery, you will be fully charged after every 100 mAh, then you have to charge 10 times to calculate a charge cycle (100 mA times 10 times).
Therefore, there is absolutely no need to wait until the battery is running out before charging. Some people have suggested that the charger will damage the battery all the time. This is true because the characteristics of the lithium-ion battery, even if the power is already full, as long as the power is connected, it will continue to charge the battery. The high voltage load on the battery causes the battery to exceed the load, which is the main reason why some mobile phones explode when charging. However, today’s mobile phones have overcharge protection, and will automatically power off when the battery is fully charged.
In short, continuous exposure to high voltage loads is the main reason for shortening battery life. So how to reduce this state of charge, you first need to understand the process of charging the phone.
Mobile phone battery charging process
Next, we will introduce how the mobile phone battery is charged (new battery is not applicable, here refers to the mobile phone battery used for a while). The charging of the mobile phone is mainly divided into four stages. According to the charging test made by the website batteryuniversity, the corresponding voltage and current of the four stages can be known. The following figure shows the corresponding numerical value of the voltage and current of the four stages of the charging process. Below is an analysis of the charging process for this chart.
The first phase is for the fast charging phase. Starting from charging the charger, the voltage of the battery is at a relatively low value, and then the voltage begins to increase rapidly. Since the current value is high at the beginning, the charging efficiency at this stage can be said to be the highest.
In the second stage, as the current value gradually decreases, the voltage begins to stabilize after the voltage increases to a certain value. Since the current value is lower, the efficiency of charging decreases, and finally the current value is close to 0 due to overcharge protection. The charging process will stop.
The third stage is a buffer stage, the charging current value is 0, but the battery is not fully charged. At this point, the voltage begins to gradually decrease. When the voltage value falls to a certain value, the fourth phase, which is the final charging phase, begins.
At the beginning of the final phase, there will be a current flow, so that the charging will continue to start, the voltage value will start to rise again at this time, and the second time will rise to the peak. As the current decreases, the battery finally reaches a full state.
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