More details about the intimate relationship between the iPhone Air battery and its dedicated external battery pack.

Yours truly a few days ago:

If Apple made a single battery pack for all new iPhones, it would be a more generic experience across the board since the iPhone 17 lineup still uses a 3rd party Qualcomm modem. The Battery Pack wouldn’t meet Apple’s standards of true optimization. It would still be better than a generic 3rd party battery pack that just destroys battery health, but this unique, intimate relationship with the MagSafe Battery and the iPhone Air makes it outlast the iPhone 17 Pro Max at 40 hours of video playback vs 39 hours, making the combo the best battery life of any iPhone to date.

Now we have confirmation from iFixit that the MagSafe Battery is the same as the iPhone Air’s battery:

And in a fun twist, we’ve confirmed that it’s the exact same cell found in Apple’s MagSafe battery pack. You can swap between them and the phone still boots up just fine. Like a rear-mounted spare tire on an SUV, an iPhone Air with a MagSafe battery pack is ready for an on-the-go swap, if you will. Granted it’ll take a bit more than a tire iron to make it happen.

The intimate relationship is deeper than I thought. The MagSafe Battery for iPhone Air is like getting a kidney transplant from your twin versus a complete stranger.