1 will cause some effects of battery loss.
2, whether it is fast charge or slow charge, as long as it is charging it will cause permanent irreversible damage to the mobile phone, because when charging, the rapid flow of current will make the temperature of the battery rise, resulting in the permanent damage of the battery cell, but the fast charge will be more damaging than the slow charge, even if the fast charge has some protective mechanisms, but the influence of fast charge on the mobile phone is still there Although fast charging can greatly improve the charging speed of mobile phones, it will also have a certain impact on the battery life.