Question about Powerware 9120 UPS System

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Powerware 9120 batt disconnected

When i plug it in, it just says batt disconnected on the lcd screen, any ideas?

Posted by Anonymous on


1 Answer

Power & Systems Innovations, Inc.

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  • 130 Answers

Hi Anonymous,
I want to help you with your question, but I need more information from you. Are the batteries new? If you did recently replace the batteries in the cartridge, did you check the connections and make sure contact as being made?

Let me know!

Daniel • [email protected] • Power & Systems Innovations • 800.260.2259 •

Posted on Aug 25, 2014


5 Related Answers

SOURCE: Powerware 9120 DC Bus Fault Problem.

there is a 100uf/63v capacitor near the IRF630 fet. You need to replace this in order to fix this error. Along there is also a 2200uf/16v capacitor. It is a good idea to change the both at the same time.

Posted on Feb 05, 2008


Richard Roberts

  • 198 Answers

SOURCE: Powerware 9120. 1500i UPS

You can download the manual and other literature at

The contacts for support in India are found at

They offer a battery monitoring software package, at

You can email support at
Good luck

Posted on Feb 23, 2008

Alan Hood

  • 195 Answers

SOURCE: I have a Powerware 9120 2000 UPS battery failure message


After you replaced the batteries did you perform a manual battery test?

If not do so.

Alan Hood

Posted on Mar 03, 2009


t support

  • 169 Answers

SOURCE: when the machine is power on it show disconnect

There may be a broken batt lead or a failed cell or bloc inside.
try checking with software or

take out batts and test with meter.

if you dont understand how then get a tech to help. batts are dangerous.

Posted on Sep 15, 2009


  • 4 Answers

SOURCE: replacement fans for powerware 9120

9120 fans are rare and uncommon, for alternate solution just replaced the bearing of the fan.

Posted on May 27, 2010

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