1. No harm done
2.66w fast charging relative to ordinary mobile phones, the power is too large, if the mobile phone is charged, it is easy to cause the mobile phone heat increase, battery short circuit, easy to produce safety risks, it is recommended to use the original charger of the mobile phone to charge. 66 watts of fast charge is no harm to the mobile phone, the main thing also depends on the mismatch with your mobile phone, if it matches, it will be fine, if it does not match, then it will be something.