iPhone 18 Pro Max Shipping Requires New Battery Drain Feature
Apple's iPhone 18 Pro Max features a battery over 20 watt-hours, requiring a special discharge mode for mailing.

Owners of the upcoming iPhone 18 Pro Max will need to use a specific firmware function if they ever need to mail the device. According to a report by MacRumors, the handset contains a single-cell battery exceeding 20 watt-hours. This specific capacity crosses regulatory thresholds that govern the transit of electronic goods.
Because of these regulations, any transport of the device outside of standard factory distribution demands strict capacity restrictions. Devices sitting in unopened boxes or those that remain unactivated already stay beneath this threshold by default. However, once an owner activates the handset, the full energy capacity unlocks for daily use.
Managing the Prepare to Ship Function
When an active handset must travel through the mail—whether for a trade-in or a repair—the user must manually initiate a process called Prepare to Ship. This routine actively drains the power reserve and applies a temporary charge ceiling. Navigating to the settings menu allows the owner to locate this option under the transfer and reset section.
Apple notes that the hardware might generate extra heat while the automated discharge is underway. Once the process concludes successfully, the software displays a status confirming readiness for transit. If a user needs to reverse this state later, the settings menu provides a corresponding undo option, though certain circumstances might impose a fourteen-day waiting period beforehand.
What This Means for Owners
This battery restriction applies exclusively to the top-tier model, as no other current smartphone in the lineup crosses the 20 watt-hour mark. Standard daily usage remains unaffected once the initial activation lifts the factory restriction.
Apple confirms that the device remains fully certified for standard air travel and general freight once the transit firmware is active. Customers planning to send their handsets away for any reason should familiarize themselves with the new menu location to avoid delays.



