Low Power Mode Explained: What Really Turns Off on iPhone and Apple Watch

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An Apple Watch screen displays the Battery Health settings, showing the "Optimized Battery Charging" option with its toggle switch turned off and explanatory text below it, just above the Low Power Mode feature.

An Apple Watch screen displays the Battery Health settings, showing the “Optimized Battery Charging” option with its toggle switch turned off and explanatory text below it, just above the Low Power Mode feature.