Question about APC Back-UPS Pro 650 UPS System

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My APC keeps beeping.

I just purchased my APC UPS ES 725 and when I turn it on, it starts with a short beep to let me know that it powers on, and it worked fine for about 4 houars. But after that, the alarm went off and it would not stop. Ever since that, it will only alarm. I don't understand it.

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Re: My APC keeps beeping. have unpluged or dislodge you power cable from the outlet or from the power plug shuye at the back of your ups.. double check all the plug and re plug all your power cables !!!! make sure they are tightly pluged in and firm in their outlets..

Posted on Jan 28, 2008

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If you connect it up to a Windows computer with the supplied (goofy-looking) USB cable and install the APC Monitor progam "Powerchute" available on the APC web site, you can set all the activity levels and tell it just when to beep the beeper, or turn it off completely. I have two of these in my house, and have set them to never beep. The cable is goofy because it is USB on one end and a network-type on the other end.
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Jun 28, 2014 | APC Back-UPS ES 350 - UPS ( external ) -...

1 Answer

Apc beeping twice every 2 seconds

The battery inside the APC is "weak", and the "beep" is telling you to replace the battery inside the APC, or, maybe cheaper, to buy a new APC.

Feb 03, 2014 | APC BACKUPS ES BE550G 8Outlet 550VA 330W...

1 Answer

Alternating green and orange light with constant beeps

Verify that the usb to ups cable is pluggled in properly. Also you may not have a good ground. Disconnect the ups and plug it in another outlet to test with nothing else plugged into it, to see if it still beeps. You can also try and upgrade the ups software from

Jun 25, 2010 | APC Back-UPS ES 350 - UPS ( external ) -...

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What does it mean by the beep sound from the UPS ES 350 unit?

Ok, 3-4 years is a much as you can expect from an ups battery so replacement is indicated. The beeps are letting you know the battery is not able to keep up with demand. So either you have recently added to the system or the battery/s failing.

Apr 18, 2010 | APC Back-UPS ES 350 - UPS ( external ) -...

2 Answers


These UPS systems do a self check everytime you press the power button. If the voltage in the battery is too low, you'll get a long drawn out beep. A new battery should solve that problem and it is even economical with a unit this size. Here's a link:

Simply remove the single phillips screw on the bottom of the unit and remove the battery cover. Replace battery and that's it. Very simple to do.

Apr 14, 2010 | APC Back-UPS ES 350 - UPS ( external ) -...

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UPS shuts off intermittently and beeps

More than likely it just needs a new battery. If the power is sagging (called a brownout) the UPS is trying to switch over to the battery to keep the power consistent. The beeping is probably a code that indicates there is an issue with low voltage on the battery. New batteries are around $20-25. Here's a link to the replacement battery:

Hope that helps.

Jan 21, 2010 | APC Back-UPS ES 350 - UPS ( external ) -...

1 Answer

The Problem is the UPS beeps.

Hi friend,

You should on your UPS power other after some time beep will continue...

Dec 25, 2009 | APC Back-UPS ES 725 Broadband (BE725BB-TU)...

2 Answers


1) Switch Off the UPS and unplug all Loads (like System, Monitor etc.) from UPS.
2) Switch Off the AC Power (Input Power to UPS).
3) Press the UPS Power Switch constantly unless you hear 2nd BEEP Tone. As soon as you are hearing 2nd BEEP Tone, Release the Power Switch.
4) This is COLD START of all APC UPS that will reset any internal problem.
5) If, however, the problem persists, contact APC.

Jul 23, 2008 | APC Back-UPS ES 725 Broadband (BE725BB-TU)...

2 Answers


I have my apc beeping all time with and with out battery,I need a solution. Thank..oscar

Jul 07, 2008 | APC Back-UPS ES 725 Broadband (BE725BB-TU)...

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