Macbook pro keeps charging and stopping every few seconds

popsynic wrote:

Tonight, for no reason at all, my Macbook charge kept switching on and off (e.g. the charging light kept going off and on every few minutes), and the charging kept going on and off.

I used the same charger that came with the machine, the same electrical outlet I always use (and tried a different one), and the same devices attached that always are.

I have unattached all devices and rebooted, but I have the same issue.

Any ideas?

(Macbook Pro M2 Max)

I would try a different magsafe charger and compare your results...

alternatively use a direct USBC charging cable and compare your results.

A SafeBoot Use safe mode on your Mac - Apple Support will sort many anomalies

Use Apple Diagnostics to test your Mac

Use Apple Diagnostics to test your Mac - Apple Support

further—

Revive or restore a Mac with Apple silicon using Apple Configurator - Apple Support

no insight or resolve—

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a "hardware issue"

Genius Bar Reservation and Apple Support Options - Apple

Outside the USA

Contact Apple for support and service - Apple Support