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APC RS 1500G early replace battery message

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Got a replace battery icon on UPS and unRAID UPS settings.

 

I didn't have this before I did the following:

1) scheduled power outage to replace transformer in neighborhood.

2) Shutdown unRAID

3) held down power button on UPS to turn it off.

4) unplugged UPS from wall

5) 9 hrs later power was back on

6) plugged UPS back in to wall outlet

7) turned UPS back on

unRAID system booted up and working fine

then I noticed the replace battery error on unRaid UPS dameon.

 

UPS Status    Battery Charge    Runtime Left    Nominal Power    UPS Load    UPS Load %
Online REPLACEBATT    100.0 Percent    55.8 Minutes    865 Watts    86 Watts    10.0 Percent

 

BATTDATE 2015-12-08

 

Is there an easy to reset this?

 

At current runtime of 56 minutes is fine because my settings are to shut unRAID down after 10min.

 

 

One question...  in the UPS's internal settings did you ever set up a selftest?

 

Regardless, I belive that you can recalibrate the UPS to its current battery state like this...

 

Rather than using a separate keyboard and monitor - you can run this from the terminal window that unRAID now provides.  That wasn't an option when I wrote the linked procedure.  

 

Within the apctest program described you can also set the time that the battery was last changed.  That may help in your case.

Edited by S80_UK

  • Author

Never set a self test, just took brand new out of box and started using.  What does the self test do?

 

Will read what was replied and try terminal.

 

The BATTDATE of 2015-12-08, is 12 month or day?  Sounds arround right as I setup my unRAID system in spring of 2016.

Edited by Paul_Ber

Self-test means the APC switches to running the computer on battery while monitoring the battery state to learn the wear state of the battery pack.


This is normally done so the UPS can catch weak batteries and request them to be replaced before a real power failure happens and the battery falls flat.

 

The date 2015-12-08 would normally be yyyy-mm-dd. So December 2015. So quite early for a battery change. I think I have normally managed 4-5 years between replacement. But lead-acid cells are a bit tricky - a single deep discharge can take a big toll on the battery pack.

  • Author
3 hours ago, pwm said:

Self-test means the APC switches to running the computer on battery while monitoring the battery state to learn the wear state of the battery pack.


This is normally done so the UPS can catch weak batteries and request them to be replaced before a real power failure happens and the battery falls flat.

 

The date 2015-12-08 would normally be yyyy-mm-dd. So December 2015. So quite early for a battery change. I think I have normally managed 4-5 years between replacement. But lead-acid cells are a bit tricky - a single deep discharge can take a big toll on the battery pack.

It has basically never run on Batteries other than if a power outage, it shuts down in 10 min.

  • Author

I powered down my unRAID system, then turned off power supply so it doesn't come on while trying to do the self test.

 

Ok turned off APC UPS.

Then held down  APC UPS power button for 6 sec like instructions say for manual self test.

 

The Replace battery icon on the APC UPS is gone now.

 

Will read that post about the battery re-calibration next.

 

So my original having the APC UPS off with the cord pulled from the wall must of done something weird on the power on.

That sounds like progress.  Weird stuff can happen.

 

I'd still recommend a calibration run at some point.  I try to do one about once a year.  I avoid doing that too frequently because it does take the batteries down to 25% which is pretty hard on them, but OK once in a while.

Edited by S80_UK
Typo

5 hours ago, S80_UK said:

That sounds like progress.  Weird stuff can happen.

 

I'd still recommend a calibration run at some point.  I try to do one about once a year.  I avoid doing that too frequently because it does take the batteries down to 25% which is pretty hard on them, but OK once in a while.

Better to find out sooner in a controlled test than later when you have an outage that your battery is toast.

50 minutes ago, jonathanm said:

Better to find out sooner in a controlled test than later when you have an outage that your battery is toast.

The "smart" guy at a previous job did not bother with calibrations or self-test for the UPS handling the company servers. Then power went and the servers died about 6 seconds later. He did use a UPS for his own desktop machine too - that one stayed up for the better part of a minute. Almost enough time to get Word to abort trying to save to the missing file server and instead save to the local disk. He quickly learned the hard way why I had multiple times asked him if he did run battery tests.

 

The only way to know the function of the battery pack is to apply a quite significant load. Then measure the initial voltage drop that indicates the inner resistance. Then keep the load for a while and see how quickly the voltage drops based on how much actual capacity the battery has.

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