Apple Releases Firmware Update for MagSafe Battery Pack

Apple has deployed a firmware update for its MagSafe Battery Pack designed for iPhone Air models. The new firmware version 101.0 replaces the previous 99.0 release, marking one of the rare firmware updates for Apple accessories compared to the more frequent updates seen with AirPods.

This update follows Apple's recent pattern of accessory maintenance, arriving shortly after firmware updates for AirPods Pro 3. While Apple doesn't publish official release notes for battery pack firmware, the update likely focuses on improving power management efficiency and ensuring compatibility with iOS 18 updates released in recent months. Such background optimizations help maintain consistent charging behavior and prevent potential conflicts with new iOS power management features.

The update process requires no user intervention. When the MagSafe Battery is attached to an iPhone Air and actively charging, the firmware installs automatically in the background. Users can verify their current firmware version by navigating to Settings > General > About > MagSafe Battery on their connected iPhone.

For developers creating MagSafe-compatible accessories, this update underscores Apple's continued refinement of wireless power delivery protocols. Third-party accessory makers should verify their products maintain compatibility with Apple's updated reference implementation during testing cycles.

Most users won't notice dramatic changes, but the update may resolve edge-case issues like inconsistent charging initiation or thermal management during extended use. If you observe significant behavioral changes in your MagSafe Battery Pack after updating, share your observations through Apple's official feedback channels to help inform future improvements.

Apple Support: MagSafe Battery Pack iOS Power Management Documentation