There is no effect on continuing to charge the Apple 11 after it is full. However, the premise is that regular manufacturers must be used to produce chargers and charging cables that meet the national 3C standard.
When the battery of the phone reaches a high degree, it will start to reduce the current until it is full, when the battery is full, the detection circuit will cut off the circuit between the phone and the charger, then the charger will not be able to charge the battery, so the Apple 11 need not worry about the battery overcharge.