While the battery is small, it sports a metal case just like the one found in the iPhone 16 Pro. This supposedly has two noteworthy advantages. First, the heat generated during charging can be better distributed and more effectively dissipated, which can speed up charging and potentially extend the battery’s lifespan. Second, the metal shell simplifies repairs.
According to the repair experts at iFixit, the more robust casing makes it harder to accidentally puncture or bend the battery, which can lead to a fire in worst-case scenarios. According to MajinBuOfficial, the battery’s metal case also helps ensure that the iPhone 17 Air does not bend too easily despite its sleek chassis.