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battery charging - Calculate the electric bill of a phone charger (AC adapter input or output?) - Electrical Engineering Stack Exchange
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Amazon.com: USB C Charging Block for Samsung Galaxy, 25W Super Fast Wall Charger Block Type C, Power Adapter Box for Galaxy S22 /S21/S20/S9/Ultra/Plus/Note, for iPhone 13/12/11/Pro Max/iPad Pro and More -2Pack :
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