How Apple bypasses battery shipping restrictions for iPhone 18

Apple has found a way to overcome regulations regarding the shipment of large-capacity batteries for the iPhone 18 Pro Max, without having to reduce the physical battery capacity through software that limits the battery capacity during the shipping process.

GSM Arena reported on Sunday that this move relates to international shipping regulations that impose additional requirements for devices with single-cell batteries exceeding 20 watt-hours (Wh).

Apple has subsequently implemented a firmware system that keeps the battery capacity of the iPhone 18 Pro Max below the 20 Wh threshold from the moment it leaves the factory until the device reaches the consumer.

In this way, Apple can continue to use larger capacity batteries without having to alter the hardware solely to meet requirements during the distribution process.

Based on revealed battery capacity information, the US version of the iPhone 18 Pro Max with an eSIM configuration has a measured battery capacity of 5,567 mAh, or approximately 21.75 Wh.

Apple has also prepared a solution for when devices that have already been activated must be shipped back, for instance, for repairs, returns, trade-ins, or transfers to other individuals.

Through the ‘Prepare to Ship’ feature, the iPhone will reduce the battery energy to below 20 Wh while simultaneously setting a charging limit.

For specific shipments such as repairs, trade-ins, or returns, Apple stated that the charging limit can be set at 80 per cent for a period of 14 days.

Apple emphasised that this mechanism was created to meet shipping requirements, rather than because the iPhone 18 Pro Max battery is unsafe for use.

This move demonstrates how manufacturers can utilise software to navigate logistics regulations that previously had the potential to limit the use of larger capacity batteries in smartphones.