During the charging process of Huawei Mate20 Pro, if the charging speed is slow after the fast charging reaches 80%, the following reasons may cause:
1. Charger or data cable problem: Please check whether the charger and data cable you use are original accessories. Non-original accessories may have compatibility issues, resulting in slower charging.
2. Battery aging: After the battery is used for a period of time, the performance may decline, resulting in slower charging speed. You can try replacing the charger and using the original cable to see if the charging speed improves.
3. System problems: Some system problems may cause slow charging speed. You can try to check your phone's system version and update to the latest version to resolve this issue.
4. Charging ambient temperature: Too low or too high charging ambient temperature may affect the charging speed. Ensure that the ambient temperature is moderate when charging to obtain a better charging effect.
5. Application interference: Some applications may run in the background, occupying a lot of memory and CPU resources, resulting in slow charging speed. You can try to close unnecessary applications to free up phone resources.
6. Mobile phone hardware problems: If the above methods can not solve the problem, it may be a problem in the mobile phone hardware. Contact Huawei after-sales service for repair or replacement.
When troubleshooting, please rule out the above possibilities one by one to find the root cause of the slow charging speed. For further assistance, contact Huawei customer service.
Huawei Mate 20 Pro's fast charging technology is to support 40W super fast charging, but it will automatically switch to ordinary charging mode when it is charged to 80%, which is to protect the battery life, because fast charging will have a certain loss of the battery. Therefore, the charging speed will slow down when it is charged to 80%, which is a normal phenomenon, and there is no need to worry. If you want to charge the battery quickly, it is recommended to turn off the charge when using the phone so that the battery can be fully charged.