Why does iPhone 5s automatically turn off when battery reaches 20%?

Introduction Why does iPhone 5s automatically turn off when the battery is 20% used? When there is 20% of iPhone 5S battery remaining, sometimes it is about battery life.

Why does iPhone 5s automatically turn off when battery reaches 20%?

When the iPhone 5S battery has 20% remaining, sometimes it's just an empty battery. This is a serious lack of battery life, leading to significant battery loss, causing an automatic shutdown.

This may happen because when you usually use your mobile phone, you often use it while it is charging, or you use a non-original data cable to charge it or you charge it after it is empty; for a long time and frequent use of power bank for charging will cause the phone to automatically shut down when the battery level shows 20%.

The power of the lithium battery will decrease a little each time it is charged and discharged. After about 400 charge and discharge cycles, it will be reduced to 80%. A charge-discharge cycle refers to a completely full charge or discharge ofcharge, that is, if you use 20% of the electricity and it is fully charged, you need to repeat it 5 times to count it as a charge. discharge cycle.

Not using the official Apple charger may also damage the battery. As long as you use Apple's official power supply, it will switch to direct power mode after fully charged and there will be no overcharging problem.

The first 80% of the lithium battery charging process can be completed by fast charging in 2 hours. The remaining 20% ​​uses continuous charging, which can be completed in 2 hours, which can reduce the possibility of automatic shutdown.

How long does the iPhone 5s battery last?

The theoretical battery life of the iPhone 5s is approximately 5 years. In fact, the battery capacity will start to decrease. significantly after one year of use.

Tip: IfBattery life is greatly reduced, try to replace the battery to prevent it from constantly heating up, causing the battery to swell or affect the circuit. You can purchase iPhone-specific batteries and removal tools online to replace them.

Battery refers to a cup, tank or other container or part of a composite container containing an electrolyte solution and metal electrodes to generate electric current. It is a device capable of converting chemical energy into electrical energy. It has positive and negative poles. With the advancement of technology, batteries generally refer to small devices capable of producing electricity. Like solar cells. Battery performance parameters mainly include electromotive force, capacity, specific energy and resistance. InUsing the battery as the power source, you can obtain power with stable voltage, stable current, stable power supply for a long time and little influence from the outside world. The battery structure is simple, easy to carry and charge. and the discharge operation is simple and easy. It is not affected by impact, stable and reliable performance, plays a great role in all aspects of modern social life.

First, the theoretical battery life of the iPhone 5s is around 5 years. In fact, battery capacity will begin to decrease significantly after a year of use.

Second, if the battery life is significantly reduced, try to replace the battery to prevent it from heating up frequently, causing the battery to swell or affect the circuit. You can buy specific batteries and removal tools onlineto the iPhone to replace them.

3. Precautions for charging iPhone5s:

1. The iPhone5s battery has about 50% charge. Use it until it is below 20% before you start charging. There is no need to charge immediately.

2. When iPhone 5s is charging, a message indicates that it is fully charged. It is best to continue charging for 15 minutes. Don't charge for too long won't do any good. on the drums.

3. When using iPhone 5s, try to use the battery to less than 20% before recharging. This can reduce the number of charging times and extend battery life. . Additionally, try disconnecting it once it is fully charged. Do not charge for too long.

4. When charging iPhone 5s, you must use your own charger.

5. When using iPhone 5s, charge and discharge it once a month, that is, useez all the energy until it is turned off, then charge it fully again.

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