[cluster01:monitor.shutdown.emergency:EMERGENCY]: Emergency shutdown: Environmental Reason Shutdown (Battery PCT capacity critical) event all command of SP show node down after NVMEM battery learning ...[cluster01:monitor.shutdown.emergency:EMERGENCY]: Emergency shutdown: Environmental Reason Shutdown (Battery PCT capacity critical) event all command of SP show node down after NVMEM battery learning cycle start. system power cycle from SP doesn't resolve the issue and node power status show off. This command will trigger a destage of ONTAP and will take some time to complete after which the system will restart.