Macos
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MagSafe or USB-C: Which Should You Use to Charge Your MacBook?
MagSafe 3 and USB-C charge the same battery through the same negotiation. The real differences: 140W support, the breakaway magnet, port count, and cable wear.
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Why Does Your Mac Say "Not Charging" While Plugged In?
The macOS battery menu can show Not Charging while the charger is connected. The four real causes: optimized charging, a hot battery, a weak charger, and heavy load.