MacBook frequently stops charging briefly when battery at 100%

Question

Once my laptop battery reaches 100%, when unattended, every 5 to 30 minutes, the MagSafe 3 cable light briefly turns off, turns back on, the "100% Charged" message will show on the screen, and the computer will chime. (Similar to this other unanswered post). This becomes fairly annoying, and I'm also concerned it will be bad for my battery.

I have a 2023 MacBook Pro M2 Max, and using the charger in the box. I did a fresh install when I got it.

When troubleshooting:

1. Happens on multiple different outlets
2. This happened both on Ventura and when I upgraded to Sonoma
3. Brought the laptop to an Apple Store and they found no issues when running diagnostics
4. Apple Store cleaned the MagSafe connection
5. Apple Store performed a Firmware Revive

I suspect there may be some software or setting triggering this behavior. I was trying to find some relevant logs and found these by typing pmset -g log. I'm not sure if these are normal or point to anything.

2023-11-19 11:55:30 -0600 Wake Requests         
[process=PowerUIAgent request=Maintenance deltaSecs=86416 wakeAt=2023-11-20 11:55:45 info="com.apple.obc"]
[process=dasd request=SleepService deltaSecs=908 wakeAt=2023-11-19 12:10:38 info="com.apple.dasd:501:com.apple.intelligenceplatform.IntelligencePlatformCore.ViewEvery21Minutes"]
[process=dasd request=TimerPlugin deltaSecs=1035 wakeAt=2023-11-19 12:12:45 info="com.apple.dasd:501:com.apple.ScreenTimeAgent.activity.clean-up-expired-store-items"]
[process=mDNSResponder request=Maintenance deltaSecs=5382 wakeAt=2023-11-19 13:25:12 info="DHCP lease renewal"]
[process=powerd request=CSPNEvaluation deltaSecs=7216 wakeAt=2023-11-19 13:55:46]
[*process=powerd request=UserWake deltaSecs=448 wakeAt=2023-11-19 12:02:58 info="com.apple.alarm.user-invisible-keysync.retry,1466"]           
2023-11-19 11:55:30 -0600 PM Client Acks        Delays to Sleep notifications: [com.apple.bluetooth.sleep is slow(1541 ms)]           
2023-11-19 11:55:31 -0600 Assertions            PID 454(mDNSResponder) Created MaintenanceWake "mDNSResponder:maintenance" 00:00:00  id:0x0xd000086fd [System: SRPrevSleep kCPU]          
2023-11-19 11:55:31 -0600 Assertions            PID 454(mDNSResponder) Released MaintenanceWake "mDNSResponder:maintenance" 00:00:00  id:0x0xd000086fd [System: No Assertions]          
2023-11-19 11:55:31 -0600 Assertions            PID 319(powerd) Created InternalPreventSleep "PM configd - Wait for Device enumeration" 00:00:00  id:0x0xd000086fe [System: SRPrevSleep kCPU]          
2023-11-19 11:55:31 -0600 com.apple.sleepservices.sessionStarted    SleepService: window begins with cap time=180 secs                                    
2023-11-19 11:55:31 -0600 DarkWake              DarkWake from Deep Idle [CDNP] : due to SMC.OutboxNotEmpty smc.70070000 wifibt wlan/ Using AC (Charge:100%) 2 secs    
2023-11-19 11:55:31 -0600 WakeDetails           
DriverReason:SMC.OutboxNotEmpty - DriverDetails:                           
DriverReason:smc.70070000 - DriverDetails:                                 
DriverReason:wifibt - DriverDetails:                                       
DriverReason:wlan - DriverDetails:                                         
2023-11-19 11:55:31 -0600 HibernateStats        hibmode=3 standbydelaylow=0 standbydelayhigh=0                                        238           
2023-11-19 11:55:31 -0600 WakeTime              WakeTime: 0.111 sec                                                                   
2023-11-19 11:55:31 -0600 Kernel Client Acks    Delays to Sleep notifications: 
[AppleBCMWLANCore driver is slow(msg: SetState to 0)(116 ms)] 
2023-11-19 11:55:31 -0600 Kernel Client Acks    Delays to Wake notifications: 
[AppleCS42L84Audio driver is slow(msg: DidChangeState to 1)(77 ms)]
[Codec Output driver is slow(msg: WillChangeState to 1)(77 ms)]
[RTBuddy(ANS2) driver is slow(msg: SetState to 2)(101 ms)] [AppleMultiFunctionManager driver is slow(msg: SetState to 1)(116 ms)]
[AppleConvergedIPCOLYBTControl driver is slow(msg: SetState to 1)(113 ms)]           
2023-11-19 11:55:31 -0600 Assertions            PID 319(powerd) Created InternalPreventSleep "com.apple.powermanagement.acwakelinger" 00:00:00  id:0x0xd00008700 [System: PushSrvc SRPrevSleep kCPU]          
2023-11-19 11:55:31 -0600 Assertions            PID 400(PowerUIAgent) Created MaintenanceWake "com.apple.obc" 00:00:00  id:0x0xd00008705 [System: PushSrvc SRPrevSleep IPushSrvc kCPU]          
2023-11-19 11:55:31 -0600 Assertions            PID 400(PowerUIAgent) Released MaintenanceWake "com.apple.obc" 00:00:00  id:0x0xd00008705 [System: PushSrvc SRPrevSleep IPushSrvc kCPU]          
2023-11-19 11:55:32 -0600 Assertions            Summary- [System: PushSrvc SRPrevSleep kCPU] Using Batt(Charge: 100)          
2023-11-19 11:55:32 -0600 Assertions            PID 319(powerd) CapExpired ApplePushServiceTask "Powerd - Wait for client pushService assertions" 00:00:01  id:0x0xa000086ff [System: PushSrvc SRPrevSleep kCPU]          
2023-11-19 11:55:32 -0600 com.apple.sleepservices.sessionTerminated SleepService: window has terminated.                                                  
2023-11-19 11:55:33 -0600 Assertions            Summary- [System: SRPrevSleep kCPU] Using AC(Charge: 100)          
2023-11-19 11:55:33 -0600 Assertions            PID 1276(PowerChime) Created DisplayWake "com.apple.chimeOnAttach" 00:00:00  id:0x0xe00008706 [System: SRPrevSleep DispWake kCPU]          
2023-11-19 11:55:33 -0600 Wake                  DarkWake to FullWake from Deep Idle [CDNVAP] : due to Notification Using AC (Charge:100%) 4 secs 

Near the end of the logs you can see Using Batt(Charge: 100) followed by Using AC(Charge: 100) just a second later, and a message about the power chime.

Answer 1

I ended up getting my 140W charger replaced by Apple, and no longer seeing this issue.