Under normal circumstances, the Apple 8p can be charged with 30w charging head, but the charging power can not reach 30 watts. Under normal circumstances, products after Apple 8p can basically support fast charging, but because Apple mobile phones use the lightning interface and the maximum charging power can only reach 18 watts, theoretically speaking, if the fast charging protocol is the same, the use of 30 watts fast charging appliances can be 18 watts fast charging. If the protocol does not match, it can also be charged at 5 volts and 2 amps.
Apple iPhone8 and above series models all support PD fast charge function, just with the PD charger original or MFi certified USB-C to Lightning Apple PD fast charge data cable use, you can achieve PD fast charge effect, 30 minutes from 0 to 50% charge. However, the iPhone8p fast charge only supports 18W, and it can be used with 30W charger (high power downward compatible with small power), but the charging peak is about 18W, after all, the device only supports 18W.
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Therefore, 8p does not support 30w wireless fast charge.
No, Apple 8p maximum support 18w fast charge, 30w charging head charging will hurt the battery.