How to keep your iPhone battery healthy? Do you need to replace the battery life of your iPhone if it reaches 80%?


Jiang Sheng

For Apple mobile phone users, battery life and signal issues have always troubled many Apple fans, and today I will mainly talk about iPhone battery health issues. Generally speaking, it is recommended to replace the battery when the iPhone battery life is lower than 80%. However, some users only use it for one or two years and the battery life is lower than 80%. And some users use it for two to three years or even longer, and the battery life is still 80%. % or above, how to maintain this? Next, the editor will talk about iPhone battery health and battery replacement.

First of all, we need to know what is related to iPhone battery health? Generally speaking, battery life is mainly related to: cycle times, usage temperature, discharge status, etc. Let’s introduce these points in detail below.

1. Battery cycle times

Many people may ask what is the battery cycle number?

Today's mobile phones use lithium polymer batteries (lithium batteries), which do not have the memory effect of traditional nickel-cadmium batteries. In other words, it does not take too long to charge the lithium battery for the first time.

In addition, it should be noted that one cycle of a lithium polymer lithium battery refers to 100% of the power consumption, not one cycle after one charge!

2. Using temperature

The temperature of lithium batteries during use is an important factor affecting the health of the battery. According to Apple’s official website’s operating environment requirements for its electronic products, the optimal operating environment temperature for iPhone, iPad, Apple Watch and other devices is 0℃-35℃. When the temperature is significantly lower or higher, battery self-protection will be triggered. The mechanism allows the phone to automatically shut down, which is why the iPhone easily shuts down automatically in low-temperature winters or high temperatures.

At high temperatures, the diffusion of hydrogen ions and sulfate ions inside the lithium battery will accelerate, and the battery's discharge capacity will increase. This is why the iPhone's battery life is likely to deteriorate at high temperatures.

At low temperatures, the ion diffusivity becomes poor and the discharge capacity becomes weak. The system will recognize that the battery is out of power. At this time, the mobile phone will have a large number of "power jumps" in a short period of time, which can easily trigger the battery's self-protection mechanism and cause the mobile phone to fail. Automatic shut-down.

It is worth mentioning that mobile phones will release a certain amount of heat when charging and discharging, which will increase the heat of the mobile phone. Therefore, you can charge your phone or connect a power bank at low temperatures, which can prevent your phone from automatically shutting down due to low temperatures to a certain extent.

In general, among all environmental factors, temperature has the greatest impact on the charge and discharge performance of lithium batteries, which in turn affects battery life. Generally, the optimal operating environment temperature for iPhone is around 0℃-35℃. If the temperature is too high or too low, it will be detrimental to the health of the battery.

3. Discharge state

The reaction of lithium battery is a hydrogenation-reduction reaction. When it is charged, it is discharged, but the battery should not be over-discharged. Therefore, it is best to charge your mobile phone when it maintains a certain amount of power. Do not charge it until the power is exhausted. This will cause the reactants inside the battery to be affected.

To put it simply, you can charge your mobile phone whenever you want. As long as the battery power is low, you can replenish it at any time. It is generally recommended to charge more than 20% of the remaining power, and less than 10%. It is often said that the mobile phone will automatically shut down when it runs out of power. , which will have a greater impact on battery life.

4. Degree of use

iPhone battery health is also related to the user's usage. Simply put, the battery is a consumable item. In addition to maintenance differences, it is also related to the user's usage. For example, heavy daily use, often used to play games or watch videos, etc., long-term high-load use, battery loss is relatively large, plus the need to charge several times a day, long-term accumulation will undoubtedly have a great impact on battery health.

Users who use it lightly can basically charge it once a day, and the battery loss is relatively small. Combined with battery maintenance, it is more conducive to keeping the iPhone battery power stable at a high percentage.

When does the iPhone battery life fall below what level do you need to replace the battery?
Generally speaking, when the iPhone battery health is below 80%, it is recommended to replace the battery. Regarding iPhone battery life, you can check the approximate lifespan in the battery settings or through Aisi Assistant.

If your iPhone is running iOS 10.2.1 to iOS 11.2.6 and the battery life is too low, a notification "iPhone battery may need repair" may appear when you enter "Settings" > "Battery".

If your iPhone uses iOS 11.3 or later, you can view iPhone Battery and Performance in Settings -> Battery to check the health of the battery. When the battery life is below 80%, the battery life will drop significantly, and CPU problems may occur. The frequency reduction phenomenon causes the mobile phone to become stuck.

For iPhone battery life is less than 80%, whether the battery needs to be replaced mainly depends on the user experience. If you feel that the battery life is okay and there is no obvious use experience, it does not necessarily need to be replaced immediately, and you can continue to use it. If you feel that the battery life has dropped significantly and the phone is stuck, it is recommended to replace it with a new battery to give the device a new lease of life so that it can last for several more years.

Should I choose original or third-party iPhone battery replacement?
From the perspective of safety and experience, it is of course more reliable to replace the iPhone with a new original battery. However, from an economic perspective, it may not be cost-effective to replace old devices with new batteries. The following is the current price of Apple’s official after-sales battery replacement.

From a price point of view, Apple's official battery replacement is still relatively expensive. Taking old models below iPhone 8 as an example, the official battery replacement costs 359 yuan. At present, the recycling price of second-hand iPhone 6/7 is only a few hundred yuan. Replacing an original battery requires half of the value of the phone, which is obviously not cost-effective. From an economic point of view, it is generally more cost-effective to replace some older equipment with third-generation batteries. The price is generally only about 100 yuan. If you replace it manually, it may be done for less than 100 yuan.

For iPhone 8 and above models, since the phone itself relatively maintains its value, if the performance of the iPhone is still sufficient and you plan not to replace the phone for a long time, it is more reliable to choose the original battery. And if you want to save some money, you can also use some relatively good third-party brand batteries.

Finally, it is worth mentioning that in the iOS13 system, Apple began to reject non-original third-party batteries. For example, after replacing a third-party battery, health information will not be displayed in the battery settings. You need to use AISI Assistant or Some battery-related APPs can be viewed, but it will not affect user use.

Okay, here are some tips about iPhone battery health care, replacement of batteries when the battery life falls below, and replacement of original or third-party batteries. The articles are relatively long, but they are all solid information. If you like them, remember to like, collect, and repost them!




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