The 2021 and 2022 iterations of Apple's 16-inch MacBook Pro, powered by the innovative M-series processors, came with a limitation in their rapid charging capabilities. Specifically, when users employed the USB-C to MagSafe 3 cable provided by Apple, the maximum charging power was capped at 140W. This restriction was directly tied to the limitations inherent in USB-C technology itself, as the USB-C ports on these MacBook Pro models were only capable of supporting charging up to a 100W threshold.
In a noteworthy development, Apple introduced an upgrade with the 2023 version of the 16-inch MacBook Pro, enhancing its charging flexibility significantly. This latest model introduced the capability for users to achieve the full 140W fast charging not only through the traditional MagSafe connection but also via one of its USB-C ports. This advancement became feasible through the use of a power adapter designed to deliver in excess of 140W, combined with a 240W USB-C cable, such as the one Apple released in September.
This improvement, however, is distinctively available only with the 16-inch MacBook Pro models. In contrast, the 14-inch MacBook Pro models maintain their fast-charging capabilities with a 96W charger, a power specification that USB-C ports on earlier models were already equipped to handle.
By integrating the ability for the 16-inch M3 MacBook Pro to support 140W fast charging through a USB-C connection, Apple has effectively expanded the charging methodologies accessible to users of its high-end laptops. It is worth noting, however, that the 240W cables necessary to facilitate this enhanced charging capability are limited to USB 2.0 data transfer speeds. This limitation could influence the decision-making of users who prioritize high-speed data transfer rates alongside their need for rapid charging capabilities.
