Despite the MagSafe battery for the iPhone Air being incompatible with other models, it is capable of charging other accessories via the USB-C port. You can charge an Apple Watch, AirPods case, or any small device that can support power delivery through USB at a maximum of 4.5W.
If the MagSafe battery pack has ample charge, you can connect the USB-C cable to an Apple accessory you have, or even any fan powered by a USB. The battery pack for the iPhone Air is available in the United States for $99.
The original battery pack for MagSafe that had a lightning port was not capable of charging small accessories like an Apple Watch or AirPods case in the past, so this is a new take on the battery pack. The older MagSafe battery pack, along with the MagSafe Duo Charger, was discontinued after the annual Apple event when the iPhone 15 was launched.
