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AFF A900 battery charge FET off with BMC FW 16.4 and later on

  1. Last updated
    Apr 2, 2025
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Category:
aff-series
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hw
Last Updated:
4/2/2025, 3:16:06 AM

Applies to

  • AFF A900 / FAS9500
  • BMC Firmware 16.4,16.5,16.5P1

Issue

  • AFF A900 and FAS9500 systems report nvram.battery.chargeFET.off  and nvram.battery.capacity.low.critical error that self corrects in 1 minute:

Mon Sep 25 01:39:59 +0200 [NODE02: env_mgr: nvram.battery.chargeFET.off:debug]: The NVRAM battery charge FET is off. To prevent data loss, the system will shut down in 24 hours.

Mon Sep 25 01:40:09 +0200 [NODE02: env_mgr: nvram.battery.chargeFET.normal:debug]: The NVRAM battery charge FET is on.

Mon Sep 25 01:40:29 +0200 [NODE02: env_mgr: callhome.battery.warning:debug]: Call home for BATTERY (charge FET off) WARNING.

[nvram.battery.capacity.low.critical:EMERGENCY]: The NVRAM battery capacity is critically low (0 cycles). To prevent data loss, the system will shut down in 5 minutes.
[callhome.battery.failure:EMERGENCY]: Call home for BATTERY (capacity low) CRITICAL.
[nvram.battery.capacity.normal:info]: The NVRAM battery capacity is normal.

  • This also triggers AutoSupport notification:
HA Group Notification (BATTERY (charge FET off)) ALERT
  • SP-LATEST-SYSTEM-EVENT-LOG show Battery FET event.

Record 67: Mon Mar 31 15:32:22.702599 2025 [IPMI.notice]: 07e0 | 02 | EVT: 6f05ffff | Bat_Status | Assertion Event, "Discharge FET"
Record 68: Mon Mar 31 15:32:22.703784 2025 [IPMI.notice]: 07e1 | 02 | EVT: 6f06ffff | Bat_Status | Assertion Event, "Charge FET"
Record 69: Mon Mar 31 15:32:23.093628 2025 [IPMI.notice]: 07e2 | 02 | EVT: 01500005 | Bat_Dstg_Cycles | Assertion Event, "Lower Non-critical going low " | Reading: 0.000 | Threshold: 5.000
Record 70: Mon Mar 31 15:32:23.095051 2025 [IPMI.notice]: 07e3 | 02 | EVT: 01520002 | Bat_Dstg_Cycles | Assertion Event, "Lower Critical going low " | Reading: 0.000 | Threshold: 2.000
Record 71: Mon Mar 31 15:32:23.306435 2025 [IPMI.notice]: 07e4 | 02 | EVT: 01502594 | VBAT_P8V | Assertion Event, "Lower Non-critical going low " | Reading: 1.850 | Threshold: 7.400
Record 72: Mon Mar 31 15:32:23.319470 2025 [IPMI.notice]: 07e5 | 02 | EVT: 0152258c | VBAT_P8V | Assertion Event, "Lower Critical going low " | Reading: 1.850 | Threshold: 7.000
Record 73: Mon Mar 31 15:32:26.119364 2025 [IPMI.notice]: 07e6 | 02 | EVT: 6f02ffff | PCM_Status | Assertion Event, "Fault"
Record 74: Mon Mar 31 15:32:26.755770 2025 [IPMI.notice]: 07e7 | 02 | EVT: 6f02ffff | Bat_Status | Assertion Event, "Fault"
Record 75: Mon Mar 31 15:32:26.757135 2025 [IPMI.notice]: 07e8 | 02 | EVT: ef06ffff | Bat_Status | Deassertion Event, "Charge FET"
Record 76: Mon Mar 31 15:32:27.286428 2025 [IPMI.notice]: 07e9 | 02 | EVT: 81521a02 | Bat_Dstg_Cycles | Deassertion Event, "Lower Critical going low " | Reading: 26.000 | Threshold: 2.000
Record 77: Mon Mar 31 15:32:27.287863 2025 [IPMI.notice]: 07ea | 02 | EVT: 81501a05 | Bat_Dstg_Cycles | Deassertion Event, "Lower Non-critical going low " | Reading: 26.000 | Threshold: 5.000
Record 78: Mon Mar 31 15:32:27.424396 2025 [IPMI.notice]: 07eb | 02 | EVT: 6f02ffff | NVS_Status | Assertion Event, "Fault"
Record 79: Mon Mar 31 15:32:27.851782 2025 [IPMI.notice]: 07ec | 02 | EVT: 8152a28c | VBAT_P8V | Deassertion Event, "Lower Critical going low " | Reading: 8.100 | Threshold: 7.000
Record 80: Mon Mar 31 15:32:27.853605 2025 [IPMI.notice]: 07ed | 02 | EVT: 8150a294 | VBAT_P8V | Deassertion Event, "Lower Non-critical going low " | Reading: 8.100 | Threshold: 7.400
Record 81: Mon Mar 31 15:32:35.773163 2025 [IPMI.notice]: 07ee | 02 | EVT: ef05ffff | Bat_Status | Deassertion Event, "Discharge FET"
Record 82: Mon Mar 31 15:32:36.898688 2025 [IPMI.notice]: 07ef | 02 | EVT: ef02ffff | NVS_Status | Deassertion Event, "Fault"
Record 83: Mon Mar 31 15:33:28.209561 2025 [IPMI.notice]: 07f0 | 02 | EVT: ef02ffff | PCM_Status | Deassertion Event, "Fault"
Record 84: Mon Mar 31 15:33:28.785294 2025 [IPMI.notice]: 07f1 | 02 | EVT: ef02ffff | Bat_Status | Deassertion Event, "Fault"

 

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