If your MagSafe cable or power adapter isn't working
Unplug the power adaptor from the wall, wait 60 seconds and then plug the adaptor back in.
If your MagSafe cable or power adapter isn't working - Apple Support
If your Mac battery status is “Not Charging” - Apple Support
If your Mac battery status is “Not Charging” - Apple Support
you can try resetting—
Disconnect the USB-C to MagSafe 3 Cable from your Mac and from the power adapter.
Disconnect the USB-C power adapter from the wall outlet.
Use a dry cloth to wipe the MagSafe 3 port and MagSafe 3 connector. Make sure both the port and connector are dry and clear of any debris.
Make sure the USB-C port on the power adapter and the USB-C connector are clear of any debris.
Restart your Mac.
Connect the USB-C power adapter to the wall outlet, connect the USB-C to MagSafe 3 Cable to the power adapter and to your Mac, then try charging again.
verify your software is up to date…
The current stable release of Sequoia including bug fixes, security updates is macOS 15.3
Keep your Mac up to date - Apple Support
Keep your Mac up to date - Apple Support