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Phone battery has always been a nuisance issue. You may have also experienced that your phone still shows 1% battery left, but it is enough to watch a 10-minute video, and sometimes, the battery is still 10%, but the screen suddenly turns off instantly. Why is it that the battery level of the mobile phone is often confusing?
Why is the battery level of a mobile phone always unpredictable?
It's actually quite simple. The remaining battery of your phone is unpredictable, and even the phone itself cannot accurately determine the remaining power!
1. Battery management system
First of all, it is important to understand that the inaccuracy of the battery level display is mainly due to the battery management system (BMS). The system is designed by battery engineers to serve each battery, and its main task is to detect the battery level. Through a chip called a fuel gauge, the BMS is able to monitor the battery voltage and thus infer the remaining charge of the battery.
However, looking at the voltage alone is not an accurate way to determine the battery level, as the rate of voltage drop varies depending on the operation of use, such as playing games and reading novels. Therefore, there will inevitably be an error in the BMS's estimation of the remaining power of the battery, and the power display you see can only be used as a reference.
In addition to monitoring the battery voltage, the BMS also needs to estimate the remaining charge through a complex set of algorithms. Mobile phone manufacturers will use their own unique BMS to compensate for these errors. That's why some phones last a while the battery level shows 1%, while others drop 10% of the battery level quickly.
2. The "psychological tactics" of power display
There's an argument that a phone's battery doesn't always drop linearly, especially when it's close to running out, and manufacturers slow down the drop to give users more time to find a charging device, creating the appearance that the last 1% of battery is unusually durable. In fact, the actual battery may be a bit more than shown, which acts like a mental buffer to give you plenty of time to find the charger.
3. The "reserved power" of the battery
Then there is the "power retention" design of lithium-ion batteries. Normally, even if the charge level is displayed at 0%, a lithium-ion battery will retain a small portion of its charge. This is also to prevent damage to the battery caused by over-discharge, while at the same time allowing the phone to continue to be used in case of an emergency.
4. Battery aging and calibration problems
The last reason is the aging of the battery itself and calibration issues. As the battery is used and ages, its performance will gradually deteriorate, which may cause the battery level display to deviate from the actual charge. Similarly, inaccurate calibration of the battery can also lead to display errors.
Knowing this, we may need to reconsider our charging Xi, squeezing every bit of power for a long time can cause harm to battery health. Managing the battery properly and avoiding frequent full discharges is a smart way to preserve battery life. If you notice that your battery life is shortening, it may be because you are charging it incorrectly.
The law of conservation also applies here, it is impossible for the battery of any mobile phone to provide unlimited power, but with the right way of use and maintenance, we can maximize every bit of power and extend the life of the battery.
Therefore, it is important to have the right charging method, such as 3 to 4 hours. Do not overcharge and stop once fully charged, otherwise it will seriously damage the life of the battery and may even trigger danger. It doesn't take 12 hours to charge for the first time, just a normal charge. Keep your charge full at any time before it runs out. It is recommended to use the original charger and avoid using the universal charger, because its current is unstable and the quality of the universal charger on the market is not guaranteed, which may cause damage to the battery.
Hopefully, this article can help you answer some of your doubts about your phone's battery life. In fact, not only mobile phone batteries, but also many seemingly mysterious and complex scientific and technological phenomena, as long as we understand them with our hearts, we will find the hidden scientific truth behind them.
Finally, let's be a good user who takes care of mobile phones and uses batteries rationally, because technology is to benefit our lives, not to become a burden on life.