It is said that the battery capacity of iPhone 11 has dropped by 3% after more than one month. Is it true?

Do you think it is true? Let’s take a look!

The first thing to know is that the lithium polymer battery of a smartphone has a service life. Under normal circumstances, after more than 500 charge-discharge cycles, the capacity of the mobile phone will drop to about 70%. In this case, the battery life of the mobile phone will be obviously insufficient. However, it is worth noting that 500 charge-discharge cycles do not mean 500 times of charging, but the entire process of mobile phone power from 0 to 100% to 0. Apple mobile phones usually take 2 days to complete a complete charge and discharge cycle under normal conditions. 500 cycles are enough for the iPhone to be used for 1,000 days, which means that the battery capacity of the iPhone will be reduced to about 70% after about 2 years and 7 months under normal use.

Therefore, using iPhone 11 for one month, its battery capacity drops by 3%. According to this timetable, 30% will be used within 10 months. This is obviously abnormal. Although the loss of lithium polymer batteries is not linear, it may drop by 3% in the first month, but it still remains at 97% in the second month. Therefore, it is best to observe that the new mobile phone wears out too quickly: if it is less than 80% within a year, it may be a battery quality problem. You can go to Apple’s after-sales service department to apply for a free replacement of a new battery (provided that you bought a genuine phone, not a pirated one).

In addition, Apple mobile phone wear and fast charging have little to do with overnight charging. Because the iPhone 11 itself supports the fast charging function, this function has been repeatedly tested by Apple, and normal use of fast charging will not cause the battery to decay quickly. Similarly, the iPhone also has a charging protection chip. When the phone detects that the battery is fully charged, it will stop charging the battery. Therefore, under normal circumstances, even if it is charged overnight every day, it will not cause the battery to decay quickly. However, the bad habits of some netizens can also cause battery consumption. For example, charging while playing a game, in this case, high heat will be generated inside the phone, causing the chemical substances inside the battery to fall off from the positive and negative poles, shortening the battery life. In addition, the battery will run out every time the phone is used, and will not charge until it is automatically turned off, which will also seriously affect the battery life.

It should also be noted that the relatively cold environment will also have a certain impact on the battery. This is because in a low temperature environment, the viscosity of the lithium ion electrolyte in the battery will increase, resulting in slower lithium ion conductivity. Especially when charging at low temperature, lithium ions are prone to form lithium dendrites on the surface of the negative electrode of the battery, resulting in a decrease in battery capacity. And, Apple’s official website clearly pointed out that the iPhone’s operating environment is. When iPhone detects that the ambient temperature is too low or too high, it will be forced to shut down to protect the battery.

Therefore, when charging the iPhone, place the phone in a cool, ventilated place to dissipate the heat generated during the charging process in a timely manner. If you must play games while charging, it is best to use a small fan to cool the phone and use an air conditioner to lower the indoor temperature. In addition, in the process of using the mobile phone, try to charge it in time when the remaining power is about 40%, and do not wait until the battery is automatically turned off and then recharged. In the iOS 13 system, you can also turn on the “optimize battery charging” option, so that every time the phone is charged to 80%, the phone will enter a trickle charge state to protect the battery. As the battery capacity of iPhone 11 is relatively large, as long as you develop good charging habits, the battery of iPhone 11 will not be a problem for 2 to 3 years. Remember, battery consumption is irreversible. When the capacity is low to a certain extent, the battery life can only be guaranteed by replacing the battery. So if you want iPhone 11 to last longer, you must develop good charging habits.

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Friendly reminder:
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