The answer to the question of turning off flash charge mode is as follows
You can enter the phone Settings -- battery\/more Settings -- Dual engine flash charge -- Turn off dual engine flash charge (some models do not show the flash charge switch, but the default flash charge state is enabled). After closing, charging will be changed to the normal charging mode of 5V and 2A output according to your needs.
For reference only hope can help you thank you
By default, the mobile phone is turned on the flash charge mode, which can be achieved with the original charger and charging cable. If you want to remove the flash charge, open the Settings bar, find more Settings, and then you can find the dual-engine flash charge. After entering, choose to close it, or use the non-original charging cable to charge.