In terms of Apple MacBook battery life, the official performance of the MacBook Air M4 and M2 is identical. However, thanks to its more advanced chip, the M4 may offer better power efficiency under heavy loads, potentially extending battery life in some situations.
In short: Both models can easily make it through a full day of use, but the MacBook Air M4 lasts longer, and theApple MacBook Air M4 battery is more energy-efficient under heavy loads.
Official battery life is the same: Wi-Fi: up to 15 hours; video playback: up to 18 hours. This applies to both the 13-inch and 15-inch M2 and M4 models. MacBook Air M4 Battery Capacity: Both models use lithium-polymer batteries of essentially the same capacity. Apple doesn’t provide specific figures, but teardowns and testing indicate that the M4 model doesn’t increase the physical capacity of the battery.
Charging Specifications: Both models support MagSafe or USB-C charging. The base 13-inch model ships with a 30W or 35W charger. Both models support an optional 70W USB-C fast charger, charging to 50% in 30 minutes.
Main Difference: Power Efficiency and Real-World Experience
The real difference lies in the M4 chip’s improved power efficiency, which results in subtle but noticeable differences in real-world usage:
The M4 excels in high-load tasks (video editing, code compiling, and complex software operations). Thanks to improved power efficiency, the M4 potentially consumes less power than the M2 when running these high-performance applications. This means that during periods of intense work, the MacBook Air M4’s battery will deplete more slowly than the M2, potentially giving it an extra half hour to an hour of Apple MacBook Air M2 battery life.
Choosing the MacBook Air M2: If your budget is relatively limited and your primary use is for everyday office work, school, and content consumption, the MacBook Air M2’s already long and adequate battery life makes it a very affordable choice.
Choose the MacBook Air M4: If you need to handle high-performance tasks like video editing and graphics processing, or want your computer to maintain better power efficiency and battery life for years of running AI applications, and you also want a better display, the extra cost of upgrading to the M4 is worth it, as it provides stronger Apple MacBook Air M4 batterylife even under heavy load.
In short, both MacBook Air models lead the pack in terms of battery life, so you don’t have to worry about it. Your choice should be based on your performance needs, display requirements, and budget.
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