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Apple MacBook Air 13 M5 Vs M4 battery life: New MacBook suffers from 6% shorter endurance on max brightness

Apple MacBook Air 13 M5 packs a 53.8 Wh battery.
ⓘ Andreas Osthoff/Pixabay
Apple MacBook Air 13 M5 packs a 53.8 Wh battery.
We have reviewed the new MacBook Air 13 with the latest Apple M5 SoC. Overall, the laptop continues the tradition of excellent construction, stellar performance, good display, and superb power efficiency. However, the MacBook Air 13 M5's battery life shows no improvement over the last-gen MacBook Air 13 M4.

The latest Apple MacBook Air 13 is here. Armed with the Apple M5, 16 GB of RAM, and 512 GB of storage in the base model, the MacBook Air 13 M5 impressed us thoroughly in our review. As such, the laptop earned a “very good” rating of 92% in our review. However, despite the performance and efficiency improvements, the battery life of the MacBook Air M3 15 has not improved over the last-gen MacBook Air 13 M4.

In our WLAN test at 150 nits of brightness, the MacBook Air 13 M5 lasted 16 hours and 11 minutes. At full brightness, the laptop only lasted 6 hours and 39 minutes. By comparison, last year’s MacBook Air 13 M4 endured for 16 hours and 13 minutes in our WLAN test at 150 nits. The battery life of the MacBook Air 13 M4 at max brightness was 7 hours and 5 minutes.

The MacBook Air 13 M5 battery life is a slight regression compared to the MacBook Air 13 M4. In fact, the battery life of the MacBook Air 13 M5 when using the machine at full brightness is practically the same as that of the two-year-old MacBook Air 13 M3.

So, why does the Apple MacBook Air 13 M5 battery life show no improvement over the MacBook Air 13 M4? The answer is rather simple: Both laptops packs the same 53.8 Wh battery. Apple has, therefore, managed to keep battery life the same while meaningfully increasing both single-core and multi-core performance.

The unchanged battery life of the MacBook Air 13 M5 is not a problem, however. As you can tell, the laptop will easily last more than a workday on a single charge if you use the machine for routine tasks. Some Windows laptops currently offer better battery life. But, as a whole, there are only a few Windows laptops that come close to the MacBook Air 13 M5 in what Apple has managed to deliver.

Source(s)

Notebookcheck reviews of Apple MacBook Air 13 M5MacBook Air 13 M4, Image source: Andreas Osthoff, skorec on Pixabay, edited

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > News > News Archive > Newsarchive 2026 03 > Apple MacBook Air 13 M5 Vs M4 battery life: New MacBook suffers from 6% shorter endurance on max brightness
Fawad Murtaza, 2026-03- 9 (Update: 2026-03- 9)