You can't.
Because the Redmi 33w charger uses the fast charge technology independently developed by Xiaomi, it is not compatible with the fast charge technology used by Apple.
In addition, Apple Fast charge also requires the use of Apple's official certified charger and cable to achieve fast charge function.
If you need to fast charge an Apple device, you are advised to use an Apple certified charger and cable.
At the same time, for other brands of equipment, you should also use chargers and cables that meet the brand's fast charge standards, with charging efficiency and safety as the primary consideration.
Because the Redmi 33w charger uses the USB-PD protocol, it supports fast charging.
Apple mobile phones also support PD fast charge. Although Apple's official charger is not PD fast charge, Apple's battery management has very good support and should be able to make good use of the fast charge brought by the Redmi 33w charger. Therefore, the Redmi 33w charger can be very good for fast charging of Apple mobile phones, so that the phone can be fully charged faster to cope with the needs of fast paced life.
Redmi 33W charger is a fast charger that supports the QC3.0 protocol, while Apple's fast charging protocol is USB-PD, and mild fast charging supports up to 18W. Therefore, the Redmi 33W charger cannot achieve fast charging for Apple devices. Although it can also charge Apple devices, the charging speed will not exceed 18W. It is recommended to use Apple official or support USB-PD protocol brand charger for fast charging.
No, Xiaomi's charger if you charge an Apple phone. It will cause current instability but will affect the health of the battery, if serious, it will cause damage to the charging IC.
Battery damage is not covered by the warranty if you forcibly charge the Apple.
It can be filled temporarily, but it is not recommended to use for a long time.
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Apple 8 series is more than support PD fast charge protocol, millet PD charging head is also compatible with a variety of protocols, in its official publicity is also said to Samsung, Apple and other products for charging.
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However, Apple's official recommendation, including my recommendation, is to buy with MFi certification (MFi certification is Apple's official certification of its authorized accessories products).
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The same brand for the same brand is better.