Macbook Air 2024 15 Inch Battery Life. Notice that when apple says up to 18 hrs battery life 1 there is a footnote labeled 1. The new air m3 crushes windows laptops like the acer swift go 14 (9:50) and dell xps 14 (6:26) in terms of battery life.

However, wireless web use is 15 hours for both air models. At surface level, there isn’t a massive amount changed about the m3 air.