Smart-UPS RT 7500 XL - 100% capacity, discharged

[Anonymous user]

Hello,

we recently replaced all batteries from our Smart-UPS RT 7500 XL. After that the APC network management card reports: Discharged, No Other Alarms Present

After that we let it untouched for a week and then ran a selftest, but the status remained unchanged.

UPS status

Discharged, No Other Alarms Present

Batteries discharged.

Reason For Last Transfer To Battery:  Due to software command or UPS's test control.

Internal Temperature:  031.9 °C

Runtime:  17 minutes

Battery status 

Battery Capacity:  100.0  %

Battery Voltage:  216.0  VDC

Number of  External  Batteries:   001

Self-Test Result:  Passed

Self-Test Date:  01/08/2014

Calibration Result:  Unknown

Calibration Date:  Unknown

The battery date is 09/2013

Eventlog:

01/08/2014 23:37:01 UPS: Passed internal self-test.

01/08/2014 23:36:56 UPS: Returned from a Low-Battery condition.

01/08/2014 23:36:56 UPS: Batteries discharged.

01/08/2014 23:36:46 UPS: Battery power is low and will soon be exhausted.

01/08/2014 23:36:46 UPS: Battery discharge condition cleared.

After the self-test the battery capacity dropped to 96%, which looks quite normal to me. Also, an available runtime of 17 minutes looks promising.

On the frontpanel, all leds are showing normal operation. Load is 60%.

So why is the management card showing a discharged battery state?

I read that it may have to do something with a battery constant which could be reset by doing a runtime test, which unfortunately isn't possible in this productive state.

Any suggestions?

Thank you in advance.

[Anonymous user]

Hello,

we recently replaced all batteries from our Smart-UPS RT 7500 XL. After that the APC network management card reports: Discharged, No Other Alarms Present

After that we let it untouched for a week and then ran a selftest, but the status remained unchanged.

UPS status

Discharged, No Other Alarms Present

Batteries discharged.

Reason For Last Transfer To Battery:  Due to software command or UPS's test control.

Internal Temperature:  031.9 °C

Runtime:  17 minutes

Battery status 

Battery Capacity:  100.0  %

Battery Voltage:  216.0  VDC

Number of  External  Batteries:   001

Self-Test Result:  Passed

Self-Test Date:  01/08/2014

Calibration Result:  Unknown

Calibration Date:  Unknown

The battery date is 09/2013

Eventlog:

01/08/2014 23:37:01 UPS: Passed internal self-test.

01/08/2014 23:36:56 UPS: Returned from a Low-Battery condition.

01/08/2014 23:36:56 UPS: Batteries discharged.

01/08/2014 23:36:46 UPS: Battery power is low and will soon be exhausted.

01/08/2014 23:36:46 UPS: Battery discharge condition cleared.

After the self-test the battery capacity dropped to 96%, which looks quite normal to me. Also, an available runtime of 17 minutes looks promising.

On the frontpanel, all leds are showing normal operation. Load is 60%.

So why is the management card showing a discharged battery state?

I read that it may have to do something with a battery constant which could be reset by doing a runtime test, which unfortunately isn't possible in this productive state.

Any suggestions?

Thank you in advance.

[Anonymous user]

Hello Angela,

it was set to 20 minutes. Changing it to 15 minutes cleared the error state.

Thank you

[BillP · Accepted solution]

You're welcome - so yes, that was the issue. If the UPS runtime remaining is within two minutes of that low battery duration value, you'll see this as well as a flashing battery bar graph on the front of the UPS.

It's trying to tell you "hey, you want me to signal things to shut down (if configured) when 20 minutes remains (maybe to allow a safe shutdown) but I only have 17 minutes left!!" Thus, you may want to check into why this was set to 20 minutes in the first place. The default setting is 2 minutes.