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Trying to charge a MacBook with something (not USB-PD compliant) that only provides 5V (regardless of current?) may not work at all or work only slowly? Again, Apple only claims support for chargers that, ".adhere to the USB Power Delivery specification. Charger Plug Wall Socket Apple 5W USB Power Adapter For iPhone 6 7 8. Trying to charge a MacBook with something (not USB-PD compliant) that only provides 5V (regardless of current?) may not work at all or work only slowly? Again, Apple only claims support for chargers that, ".adhere to the USB Power Delivery specification." 29 or 30 W USB-C power adapter and Apple USB-C charging cable. "Appleās included 29W charger can deliver 2A 14.5V for devices that comply with the USB power delivery specification, and 2.4A 5.2V for older USB battery charging devices (phones, tablets, etc)." Using an Orico charger with 2.4A (nominal) 'Supercharger' port, and IOGEAR USB-A to USB-C charge cable (3.3ft), I record a power draw of 2.60A with a voltage of 4.72V (voltage drops from nominal 5.00 due to the strong draw). USB Charger 3.1 Type - C 29w for Macbook 12 - A1540, A1534 - 661-02315. That doesn't necessarily mean it can't charge a MacBook, but Apple probably won't claim that it should or could work unless Trent builds a USB-PD-spec-conforming battery/charger. It doesn't appear Trent claims adherence to the "USB Power Delivery specification" ("PD") for the NT120R.
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Your MacBook will charge from USB-C power adapters not manufactured by Apple if they adhere to the USB Power Delivery specification.