The Apple 8p fast charge uses about 18w, and from the Apple official side, he can fully support the three specifications of 5v9v15v. But the biggest strategy is around 18w, no matter how high the power of the charging head, Apple's fast charge is limited to 18w, as long as you buy a charger that supports USB pd, and the gear is 9v2a.
For example, you can also directly buy the 18w charger of Hammer technology, but no matter what kind of charging head, you need to buy the data cable of Apple Lightning to type c interface to be able to charge fast.
1, Apple 8plus supports fast charging 18W, but the charging power remains at about 15W after stability, Apple 8 supports wireless chargers, and the use of fast charging appliances;
2, the Apple 8 maximum support 19.49 watts of charging power, but the final charging power, determined by the battery chip, although the Apple phone supports fast charging, but the mobile phone battery is damaging, it is recommended to use the original charger, charging.