Apple uses firmware trick to ship iPhone 18 Pro Max with oversized battery legally

Apple has devised a software-based workaround to ship the iPhone 18 Pro Max without falling foul of international regulations that cap single-cell battery capacity at 20Wh. A firmware lock temporarily restricts the battery below this threshold during transit, according to Apple's support page. Once a user powers on the device for the first time, the lock is automatically lifted. After activation, the battery operates at its full rated capacity — approximately 21.75Wh for US eSIM-only models and 21.06Wh for European variants with a physical SIM.
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