How normal is the power outage of Apple 13 in a year?

Twenty percent. According to Sohu News Network, it is normal that the battery health of iphone 13 drops within 20% within one year, and exceeds 20%, which belongs to the category that needs after-sales. When the maximum remaining capacity of iPhone battery is less than 80% compared with the maximum capacity of brand-new battery, the battery needs to be replaced to ensure the battery life.