What's wrong with my phone when it's not fully charged after charging it to 80?

#Why is the phone not fully charged after charging it to 80?

One reason is a problem with the charger. The charging voltage or current of the charger cannot reach the required value. In this case, the charger can only be replaced. Another reason is that the impedance of the data line is large, resulting in line loss on the charger, or there is a problem with the data line interface, causing the mobile phone to be unable to reach the normal charging limit.

Give an example: I use a universal cable bought in the market to charge a large-capacity battery. It may show that the charge reaches 95% and then stop. This is the reason. It is recommended to buy an original charger or a genuine charger. Wire.

Suggestions:

1. Check whether the charger used is the original one. If not, please replace the original charger and try again.

2. Try changing to other power sockets.

3. If the battery supports disassembly, it is recommended to reinstall the battery or replace it with another original battery and charge it again.

4. Update the phone system version: Settings-About phone (About device)-Manually download updates/Automatically download updates (Software update/System update-Update). Note: Please back up the data in the device before upgrading.

Of course, if the phone stops charging after reaching a certain level, it may also be caused by overcharge protection.

Overshoot protection is provided by the mobile phone and battery protection board. A general charger is just a power supply and cannot provide any protection to the mobile phone.

Overshoot protection is provided by the power management chip built into the mobile phone. The lithium battery itself integrates a battery protection board, which provides protection against overcharge, overheating, short circuit, overload, and overcurrent when the battery is used independently for charging.

The charger itself can only ensure that the charger itself will not burn out and cannot provide any protection for the phone.