iPhone 18 Pro Max Requires 'Prepare to Ship' Battery Drain Before Shipping

Sep 18, 2026 · 11:28 PM UTC ·2 min read · 0 reactions · 0 comments · 8 views

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TL;DR · WeSearch summary

The iPhone 18 Pro Max requires a specific battery drain procedure before shipping due to its battery capacity exceeding 20 watt-hours. Apple has introduced a 'Prepare to Ship' feature that limits the battery charge to meet safety regulations for transport. This process is unique to the iPhone 18 Pro Max and is not required for other iPhone models with smaller batteries.

Key facts

▪The iPhone 18 Pro Max battery exceeds 20 watt-hours, triggering additional shipping safety requirements.
▪Apple uses a firmware solution to limit the battery capacity to below 20Wh from manufacturing until customer activation.
▪Users must access the 'Prepare to Ship' option in Settings to discharge the battery and set a charge limit for repairs or trade-ins.
▪The device may become warmer than usual during the discharge process, and a 14-day waiting period may apply before the feature can be disabled.
▪This shipping preparation procedure is exclusive to the iPhone 18 Pro Max and is not needed for other iPhone models.

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Original publisher	MacRumors
Canonical URL	https://www.macrumors.com/2026/09/18/iphone-18-pro-max-shipping-restriction/
Publication time	Fri, 18 Sep 2026 23:28:05 +0000
Retrieval time	2026-09-18T23:28:45.655Z
Last seen	2026-09-18T23:28:45.655Z
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Opening excerpt (first ~120 words) tap to expand

iPhone 18 Pro Max Requires 'Prepare to Ship' Battery Drain Before ShippingFriday September 18, 2026 4:27 pm PDT by Juli CloverThe iPhone 18 Pro Max has a battery capacity over 20 watt-hours, which means there are additional shipping requirements. If an ‌iPhone 18 Pro‌ Max needs to be shipped somewhere, its maximum battery capacity has to be limited through firmware. According to Apple, the ‌iPhone 18 Pro‌ Max uses an "innovative battery-firmware solution" that limits battery capacity to below 20Wh between when the iPhone is manufactured and its delivery to a customer. Activating the iPhone removes the limit to make the battery's full charging capacity available.

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