The main differences in battery capacity between the MacBook Air M4 and MacBook Pro M4 lie in their physical battery sizes and the resulting battery life. Here are the key distinctions:
1. Battery Size: The MacBook Pro M4 models generally have larger batteries compared to the MacBook Air M4. For instance, the MacBook Pro 14-inch M4 comes with a 72.4-watt-hour lithium-polymer battery, while the MacBook Air 13-inch M4 has a smaller 52.6-watt-hour battery, and the larger MacBook Air 15-inch M4 has a 66.5-watt-hour battery[2][7][11].
2. Battery Life: Due to the larger battery size, the MacBook Pro M4 typically offers longer battery life. While both models are known for their efficiency, the MacBook Pro M4 can provide up to 22 hours of video streaming or 14 hours of wireless web browsing, depending on the model and usage[7][9]. In contrast, the MacBook Air M4 offers up to 18 hours of Apple TV app movie playback or up to 15 hours of wireless web browsing[11].
3. Charging Speed: The MacBook Pro M4 often comes with faster charging capabilities, typically including a 70W USB-C Power Adapter, which can charge the device more quickly compared to the MacBook Air M4's standard 35W charger[2][7].
Overall, while both laptops offer impressive battery life, the MacBook Pro M4 generally provides longer battery endurance and faster charging options due to its larger battery capacity and more powerful charging adapters.
Citations:[1] https://www.apple.com/newsroom/2025/03/apple-introduces-the-new-macbook-air-with-the-m4-chip-and-a-sky-blue-color/
[2] 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
[3] https://www.laptopmag.com/laptops/macbooks/macbook-air-m4-vs-macbook-air-m3
[4] https://www.tomsguide.com/computing/macbooks/macbook-air-m4
[5] https://pcoutlet.com/systems/laptops/battery-life-vs-performance-no-compromise-with-modern-macbooks
[6] https://support.apple.com/en-us/121554
[7] https://www.apple.com/macbook-pro/specs/
[8] https://www.macrumors.com/guide/macbook-air-vs-macbook-pro/
[9] https://support.apple.com/en-us/121553
[10] https://bgr.com/tech/apple-unveils-m4-macbook-air-with-all-day-battery-life/
[11] https://www.apple.com/macbook-air/specs/
[12] https://www.reddit.com/r/macbook/comments/1j4f5dx/does_the_m4_macbook_air_have_better_battery_life/