The charging speed of the MacBook Air M4 and the MacBook Pro M4 differs primarily due to the power adapters they come with. The MacBook Air M4 typically includes a 35W charger, while the MacBook Pro M4 comes with a 70W charger. This difference significantly impacts how quickly each device can charge.
When charging from 0 to 50%, the 70W charger used by the MacBook Pro M4 is about twice as fast as the 35W charger used by the MacBook Air M4. However, after reaching 50%, the charging speed slows down for both devices. Overall, the 70W charger is only about 33 to 42 minutes faster than the 35W charger when charging the battery to full capacity[1][10].
In terms of fast charging capabilities, both models can benefit from faster charging with compatible adapters. For instance, using a higher wattage adapter can charge the battery up to 50% in about 30 minutes, but this requires specific adapters and cables[8]. However, the MacBook Pro M4's higher wattage charger generally provides faster charging overall compared to the MacBook Air M4.
Additionally, the MacBook Pro M4's larger battery size contributes to longer battery life, which can indirectly affect how often you need to charge it compared to the MacBook Air M4[1].
In summary, the MacBook Pro M4 offers faster charging due to its higher wattage charger, which can be beneficial for users who need quick top-ups, especially when working with demanding tasks that require sustained performance.
Citations:[1] https://www.indiatoday.in/technology/features/story/macbook-air-m4-vs-macbook-pro-m4-what-are-the-differences-and-which-is-better-for-you-2689817-2025-03-06
[2] https://www.apple.com/newsroom/2025/03/apple-introduces-the-new-macbook-air-with-the-m4-chip-and-a-sky-blue-color/
[3] https://www.reddit.com/r/macmini/comments/1ggkoxy/power_output_w_of_m4_mac_mini_front_ports/
[4] https://www.apple.com/newsroom/2024/10/new-macbook-pro-features-m4-family-of-chips-and-apple-intelligence/
[5] https://www.reddit.com/r/macbook/comments/1goo5s4/what_is_the_max_charging_wattage_for_the_macbook/
[6] https://www.technowize.com/apple-macbook-air-m4-release-whats-new-what-stays-the-same/
[7] https://www.goodhousekeeping.com/uk/product-reviews/tech/a62828298/apple-m4-macbook-pro-review/
[8] https://support.apple.com/en-us/102378
[9] https://sixcolors.com/post/2024/11/m4-m4-pro-macbook-pro-review-brighter-clearer-faster/
[10] https://www.chargerlab.com/charging-review-of-new-apple-15-inch-macbook-air-2/
[11] https://www.apple.com/macbook-pro/specs/