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

The 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.