The power of the charger is large, which means that the output current is large and the charging speed is fast.
According to the actual measurement, the highest charging power of Apple iPhone 8 can reach 19.49W, but the charging power remains at about 15W after stability;
2, it should be noted that in addition to a charging head that supports USB PD fast charge, the iPhone 8 trigger fast charge protocol also requires a USB-C to Lightning data cable; Although Apple shows on the official website that it can use the 29W original Apple charger to charge, it should be noted that the final charging power is determined by the battery chip in the phone, so the highest charging power of the iPhone is not 29W;