Question about APC Back-UPS® XS 900 (BX900R) UPS System

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On line and on battery LED is blinking simultaniously

I have a APC UPS. I replaced the battery just a couple of months back. For 3-4 days I am facing a challenge with the UPS. As I click the "On" button then everything goes fine but at the time when the green LED or "On line" LED strats to glow then suddenly the UPS comes to a state where the "On line LED" and "On battery LED" starts blinking simultaniously and making the situation to a halt.

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  • 788 Answers

Sound like you may have a problem with the new battery.
Check the water level on the new battery.
Check all your connection and if you are still having the same problem, Try removing the existing battery and jump of your car battery.
You can do this without the computer on line and will tell you if your existing battery is at fault.
P.S. You must disconnect the existing battery to do this test.
Good luck.
I have used Tractor battery's from H/D, cost about $24.00 and will do as good a job. Only problem is the size.

Posted on Sep 11, 2009

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Posted on Jan 02, 2017

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