The mobile phone is a communication tool that everyone can't live without. The update of the mobile phone is also faster and faster every month. Basically, new models will come out in a few months. At first, mobile phones were popularized to facilitate communication. Now, with constant upgrading, mobile phones have become an indispensable entertainment tool or a wallet. People don't need to bring their wallets when they go out, but the life of mobile phones is also shortened with the update. There will be some problems at any time, such as the mobile phone can not be charged, so how to deal with it?
Analysis of the reason why the mobile phone cannot be charged
1、 Low pressure status
Most smart phone batteries are lithium batteries. Normally, when users charge their phones, the maximum voltage limit cannot exceed 4.2V, and the minimum voltage cannot exceed 2.4V. The two factors that determine the charging speed are voltage and current. When the battery power of the mobile phone is lower than 0%~3%, the mobile phone will give a prompt, which may automatically shut down. If the remaining battery power of the mobile phone is infinitely close to 0%, it may be unable to charge.
2、 Charging equipment problems
In addition to the low voltage problem of the battery, there is another situation that needs attention. Many users prefer to use non original charging plugs and data cables for charging. In theory, as long as the mobile phone is compatible with the charging plug and data cable, it is OK not to use the original charging plug. The problem is that the charging efficiency will be affected. Take the quick charge function of mobile phone as an example, the quick charge function can only be used with the original charger (not absolute). If you use a non original charger, you may not be able to use the quick charge function. Moreover, many users are unwilling to turn off their mobile phone when charging their mobile phone, and they also run some software that consumes a lot of electricity. The charging speed is not as fast as the discharging speed, How could it rush into the electricity?
3、 Tail insertion problem
The tail plug is the most vulnerable part in all charging links. The quality of the charging plug, data cable, and mobile phone battery is acceptable, and the probability of occurrence is very low. If the mobile phone cannot be charged, in addition to replacing the original plug and powering off charging, the tail plug problem should be checked first, such as heavy dust, the golden finger in the tail plug (the snap ring in the data cable plug) Falling off, deformation, poor contact, etc. will lead to slow charging or inability to charge the phone.
resolvent
1. The charger is damaged or the data line is poor, causing no charging.
Solution: Change a data cable or charger, and then charge it again to see if it can charge. If it can charge, it means that there is a problem with the charger or data cable.
2. Battery problem.
Solution: If there is a spare battery, replace it to see if it can be switched on and charged. If it still cannot be switched on, it is likely to be the problem of the mobile phone, and it should be sent to after-sales inspection and maintenance; If it can be charged normally, it is the battery problem.
3. The USB socket of the mobile phone is often plugged in and out for charging, which is easy to loosen and break the leg, leading to the inability of the mobile phone battery to charge,
The solution is to replace the USB port, which requires professional technicians.
4. After the battery has been used for a long time, the metal plate electrode is oxidized, resulting in poor contact and no charge.
The solution is simple. Use an eraser to polish the metal electrode of the battery.
5. The internal charging circuit of the mobile phone fails and cannot be charged normally. Find a universal charger to charge the battery.
Solution: If it can be charged and used normally, it is a phone problem. Use the universal charger to charge or take it to repair the phone.
6. The internal protection board of the battery fails and cannot be charged normally. The solution is to replace the internal protection board of the battery or the battery.
7. The battery of the mobile phone is discharged too much, the battery protection board will disconnect the power supply and charge when the battery voltage is lower than 2.5V, and the battery has started the protection setting.
Solution: At this time, it is necessary to activate the battery, disassemble the battery, directly charge the positive and negative poles of the battery cell to higher than 2.5 V, and then the battery protection board will resume normal charging.
Mobile phones change quickly, so sometimes the battery life is not very long. In addition, we usually use mobile phones all day, and charge when there is no power, which may also cause harm to mobile phones. Therefore, we must pay attention to protecting the battery, and try not to play with mobile phones when charging.
