XR supports two charging protocols: Apple 2.4A charging protocol and PD fast charging protocol, among which Apple 2.4A charging protocol supports up to 12W charging power; PD fast charge protocol, up to 18W charging power.
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Using two different charging protocols requires different accessories. If you are looking for a cost-effective solution, choose a fast charge package that supports Apple's fast charge protocol. If you're looking for extreme speed, choose a fast charge plan that supports the PD Fast Charge protocol.
The Apple xr Fast Charge agreement is that the fast charge produced by the Apple official authorized factory can charge the Apple xr.