The Bat_LRN_Active event is appearing simultaneously on all nodes

• AFF-A50
• ONTAP 9.16.1P6

• The Bat_LRN_Active event persisted for over 12 hours
• The event raised concerns regarding battery status and potential system impact
• No hardware errors or warnings were found in BMC/NVRAM battery logs
• The system remained online and operational

Example:

Cluster_A50::> service-event show -instance
(system controller service-event show)

Node: node-01
Service Event ID: 1
Location: NV Battery on Controller A
Description: Bat_Lrn_Active
Timestamp: Fri Feb  6 00:05:19 2026

Node: node-02
Service Event ID: 1
Location: NV Battery on Controller B
Description: Bat_Lrn_Active
Timestamp: Fri Feb  6 00:05:20 2026

Node: node-03
Service Event ID: 1
Location: NV Battery on Controller A
Description: Bat_Lrn_Active
Timestamp: Fri Feb  6 00:05:22 2026

Node: node-04
Service Event ID: 1
Location: NV Battery on Controller B
Description: Bat_Lrn_Active
Timestamp: Fri Feb  6 00:05:21 2026

ipmi oem battery show
=====================
DeviceChemistry   : LION
ChemistryID   : 0x1267
DeviceName: bq40z50-R4
ID: 27100080
Manufacturer  : Inventus
FW_Version: B1
Manufacturer-date : 12/26/2024
GG_HW_RV  : 0x00a3
GG_FW_RV  : 0x0045 0x0304 0x5100 0x04 0x7504
PackVersion   : A0
CellVendorType: IMU
SerialNumber  : 0x0963
Status: Ready
…
LrnCyclFailureRunCount: 0
LrnCyclTotalRunCount: 2
LrnCycleStartDate : 26-02-06-00:05
LrnCycleStartFCC  : 0x047e
LrnCycleEndFCC: 0x0000
LrnCycleEndDate   :
LrnCycleEntry : 0x02
LrnCycleAttempts  : 0x01
LrnCycleResult: 0x00
LrnCycleStartVDSG : 0x1ff9
LrnCycleEndVDSG   : 0x1cc7
LrnCycleStartTmp  : 0x0baf
LrnCycleEndTmp: 0x0000
LrnCycleCheckSum  : 0xd1
ChargeOption  : 0xf913
ChargeCurrent : 0x0400
ChargeVoltage : 0x2010
ChargeInCurrent   : 0x1000
ChargeManufID : 0x0040
ChargeDevID   : 0x000b
fru_list
========