Posted on Jun 27, 2009

It's an older unit that i just tried. When i plug

I got a used Back-UPS RS 800 battery backup unit.

It's an older unit and when i plug it in, it beeps 4 times every minute or so. I can't seem to make it stop beeping. Is this an indication that the battery is no good in it? What else could make it beep like this?

Anonymous Mar 20, 2014

the power went off ... the battery backup started beeping when the power went back on

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Anonymous

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Posted on Jul 01, 2009

Anonymous

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Try installing the software that is included with the unit. If you didn't get the software, I believe you can download it for free from APC's website. The software will typically give you the status of the batteries and let you know if you need to replace them. If you can't get the software, take the batteries out (keep note of the wiring configuration) and test each battery using a DC voltmeter. The batteries should read around 13.5 volts DC. If they are around or below 11.5v DC, it's time for new batteries. This model, if its the black 110v version, requires the RBC32 which can be found at: http://www.batteryinternational.com/apc-rbc32--f2.html

Good luck and I hope I could help.

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