Macbook battery out of sync

JKumar04 wrote:

Hi guys, so I recently sent my Macbook M1 2020 to apple to get my battery replaced (had 40% health) they initially quoted £250 but then wanted to change my logic board for an extra £450 (everything else was working fine, it was JUST the battery which was a prominent issue). Which I found quite outrageous to be honest. I got them to send it back instead, no repair and I took it to a 3rd party. I have got my Macbook back from them, and he told me to fully charge it first. So I did, and I noticed once I took it off charge the battery didn't drain. I got about 4-5 hours of hard use from it (on purpose to drain the battery), and it eventually went to black screen. I went to check and pressed the power button and it and it rebooted at 10%, before shutting down after 1 minute. I then plugged it in, and it booted up 1 min later at 100% and again it isn't draining. I assume this is more of a software/ calibration issue (I've tried the calibration thing but to no avail), any tips would be great :).

System Information says it's at 100% health, as well as "Coconut Battery", but again the key issue isn't the performance it's just that it doesn't show me the real battery % on anything.

On an M-series Mac—

I would try a SafeBoot Start up your Mac in safe mode - Apple Support will sort many anomalies

if no resolve—

Call Customer Support (800) MY–APPLE (800–692–7753)

or on line https://getsupport.apple.com/

or call AppleCare Support at 1-800-APLCARE (800-275-2273)

Outside the USA—Contact Apple for support and service by phone

See a list of Apple phone numbers around the world.

Contact Apple for support and service - Apple Support

The old way of dealing with this is to connect the power adapter, Shutdown with the display OPEN, and let it charge all night. Then do an SMC reset in the morning. but this no longer works.

Apple silicon Macs do not have an SMC, so there is nothing to Reset. The closest we can get is to Double-tap the power button in the morning to start up.