It's okay. Can be used as an apple 13.
Huawei 40W fast charge is compatible with more than Apple 8 mobile phone charging, if the Apple 8 below the suggestion of the most careful use.
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Portable charger to charge consumer electronic products such as handheld mobile devices (such as wireless phones, laptops), especially in the absence of external power supply.
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Its main components include: a battery used as energy storage, a circuit that stabilizes the output voltage (DC-DC converter), and most mobile power supplies have chargers that are used as built-in batteries for charging.
cannot
Huawei 40w charger is not able to charge Apple 13, because Apple 13 series, although support fast charge, but does not support such a high power of 40 watts fast charge.
And in general, between different brands, the fast charge agreement is not the same, so Apple can not use Huawei's 40-watt charger. Moreover, Huawei is a typec interface, and Apple is other excuses, not suitable.
No, the Apple 13 charger is 20w to 25w, and the chargers and data cables of Huawei and Apple have their own fast charge patent agreement, which can not be mixed. The main thing is that Huawei is USB Type-C. Apple's is Lightning. These are two different charging ports. Both of these charging methods can be plugged positive and negative, and do not need to distinguish the positive and negative directions when used.