topic Re: Battery warning "Critically Low" in ONTAP Discussions

Battery warning "Critically Low"

wolfy — Wed, 04 Jun 2025 12:06:40 GMT

I have a FAS2240-4 in eval environment and the storage have been turned off for the good part of a year.

I just recently turned it back on to create a cluster and when i went to the system console via SP, it said the "the battery is unfit to retain data during a power outage"

Figured its only a test so i ignored it and went to create the cluster anyway, but now i am worried when looking at the result from system battery show (below)

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chemistry : LION
device-name : bq20z80
expected-load-mw : 133
id : 27100029
manufacturer : EnergySales
manufacturer-date : 11/22/2012
rev_cell : 0x0000
rev_firmware : 0x0100
rev_hardware : 0x00a3
TI_fw_version : 0x0110
TI_hw_version : 0xa2
serial : 0x6fe1
status : charging

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When i ran the list-sensors from the created node, it said the following in the "Bat Run Time"

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VL-FS01_1> environment status chassis list-sensors
Sensor Name State Current Critical Warning Warning Critical
Reading Low Low High High
-------------------------------------------------------------------------------------------------
Power Good OK
AC Power Fail OK
Bat 1.5V normal 1522 mV 1277 mV 1341 mV 1651 mV 1728 mV
Bat 8.0V normal 7600 mV -- -- 8600 mV 8700 mV
Bat Curr normal 500 mA -- -- 800 mA 900 mA
Bat Run Time critlow 36 hr 76 hr 78 hr -- --
Bat Temp normal 36 C 0 C 10 C 55 C 64 C
Charger Curr normal 500 mA -- -- 2200 mA 2300 mA
Charger Volt normal 8200 mV -- -- 8600 mV 8700 mV
SP Status IPMI_HB_OK

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does this mean that the battery thats having a "problem" is charging? like is it matter of waitning and itll fix it self? is this going to have a major impact on the cluster that i created?

Any help would be more than appreicated!

thanks!

Re: Battery warning "Critically Low"

SpindleNinja — Mon, 09 Dec 2019 12:23:05 GMT

It does need time to recharge, but it could also be faulty.

Re: Battery warning "Critically Low"

Ontapforrum — Mon, 09 Dec 2019 12:44:36 GMT

Hi,

As Spindle Ninja said it takes time to charge, but nothing to be concerned looking at other parameters.

Looking at the details you shared:

Current Crtical Low Warning Low
Bat Run Time critlow 36 hr 76 hr 78 hr -- --

For your information : if the Bat 'run-time' is less than '78-hr Warning' or less than '76-hr Critical', this message will be produced. However, Once the battery charge hours is above 78 hr, this message should stop.

Looking at the other parameters you shaerd such as:
Bat Curr normal = 500 mA
Charger Volt normal = 8200 mV

FYI : If the battery is fully charged : Then charger_volt will be 8200 mV and Bat_curr will show 0mA. However, it shows 500 mA, that's a sign it's charging....!

What to do: Just wait, the battery will regain charge, take a look in regular intervals, Bat run time capacity should be restored. If it does not then get in touch with support.

Thanks!

Re: Battery warning "Critically Low"

wolfy — Tue, 10 Dec 2019 06:05:00 GMT

hey! thank you gusy for the reply, it turns our the battery just needed some time to recharge 🙂

i came into work and everything is fine now!

thanks!