The battery will produce high temperature, which may damage the battery (high temperature will cause the capacity of the lithium battery to decrease sharply and the battery cell to be permanently damaged).
Apple 18w fast charge does not damage the battery. Using fast charging will certainly have a certain impact on the life of the battery, but Apple's 18w fast charging head is suitable. So nothing that would damage the battery
Of course, it will damage the mobile phone battery, and the larger the power of the charger, the greater the mobile phone battery. Shanghai is bigger than that.