20 Most Recent APC (BE500U-WEB) (BE500UWEB) UPS System Questions & Answers


I hear a continous clicking on my BE500R-PH ups when i turn it on. What seems to be the problem?..Allan...Philippines

Hi I also having the same problem here even replacing new batteries still doesn't give a fix, Im thinking it might be the relay?
5/26/2016 7:36:01 AM • APC (BE500U-WEB)... • Answered on May 26, 2016

Click sound coming continously from

Your batteries are dead.
11/20/2015 12:32:19 AM • APC (BE500U-WEB)... • Answered on Nov 20, 2015

Don`t charge the battery

Remove the battery, plug in the APC unit but do not turn it on. With a multimeter, place the leads on the proper connectors and turn on the meter and place it on the lowest DC setting to read DC voltage. The DC voltage should read 13.5 DC volts, which means the unit is capable of recharging the battery. If it reads low, for example, 6.44, then there's a problem. On the main board of the APC unit, it is more than likely a faulty capacitor.
2/14/2015 6:46:29 PM • APC (BE500U-WEB)... • Answered on Feb 14, 2015

Battery b/u squeals after unplugging everything

Hi Robert,The UPS will beep/squeal if the power isn't turned off to it before it is unplugged from the wall. But the other thing that may be causing the noise is a bad battery. Replacement battery price is $26.00.Reply or call if you need more help with this -- 407.380.9200
11/1/2013 8:09:17 PM • APC (BE500U-WEB)... • Answered on Nov 01, 2013

APC ES500 switches off and the red light blinks.

The battery for this unit is an APC# $^ (RBC46)
Also known as a UB-1280 (12 volts 8.0 AH- amp-hour)

Did you add a greater load ... like a small "heater"?
Remove most of the plugs for what is plugged into it and try again.

If you have a "printer" plugged into it, unplug it, from the "protected" side. It belongs on the "surge" side of the APC Battery backup.

Hope this helps!
3/23/2013 2:13:48 AM • APC (BE500U-WEB)... • Answered on Mar 23, 2013

Ups not giving back up

How old is this UPS? Is power failure frequent? Anyway I think you batteries will be gone faulty. You may have to replace them.
2/18/2013 1:13:44 PM • APC (BE500U-WEB)... • Answered on Feb 18, 2013

APC UPS is totely deat.

You have to take apart the UPS. Inside you will find a battery. On the battery you will find the make and model of the battery. Buy a new battery install it. Plug in UPS and turn it on.
1/19/2013 8:07:37 AM • APC (BE500U-WEB)... • Answered on Jan 19, 2013

I have APC be500 ups,

Going down the line. Does it have power? Do you use the powershoot program? Plug in the cable to the unit and what does current status say? if it says nothing, you probably dont have power or the unit is toast. If it says the line voltage is low or high, check it and if its really ok, there a number of parts that check the line and using another unit will probably tell which one. APC wont sell you parts or a schematic. So if you are not a excellant tech, send it in for about 40 bucks to get it refurbed or by a new one.
1/11/2013 2:05:59 PM • APC (BE500U-WEB)... • Answered on Jan 11, 2013

APC 500 beeps all the

It could be over loaded or too hot. Unplug everything and see if it keeps beeping. Or you can reset the logic. to do that turn off the UPS. Unplug from the wall. Disconnect the batteries. Push the on button. The LED's may flash. This is the logic reset. Put it back together and all should be good.
10/28/2011 3:57:16 PM • APC (BE500U-WEB)... • Answered on Oct 28, 2011

BE500R-PH when i switch power

Your battery is half dead already(dead cells). It need battery replacement.
9/19/2011 2:10:20 AM • APC (BE500U-WEB)... • Answered on Sep 19, 2011

When i start my ups

Plug it in and turn on everything that you normally plug into it. If your UPS has good batteries it should stay online. How old is the UPS?
9/13/2011 4:33:05 PM • APC (BE500U-WEB)... • Answered on Sep 13, 2011

Green light flashes and ups

your UPS failed a battery test. Replace batteries.
8/29/2011 8:00:45 PM • APC (BE500U-WEB)... • Answered on Aug 29, 2011

Backup power ends quickly even with new battery

What is the load on the unit? How old is it?

The symptom can occur if the load is too large. It will also happen when the unit reaches a certain age.

I've found that the low-end consumer UPS's should be replaced when the battery fails. The charging circuitry usually fails to charge the battery even with a new battery soon after the replacement.

The way I check if the battery or the UPS charging system has failed is with a voltmeter to give the current voltage and a variable DC power supply (whatever is appropriate for the battery) to attempt to charge the battery. I can watch the battery discharge with an oscilliscope if I want a full trace of the unit.) Charge the battery fully then watch the unit over time. If the battery itself is bad, you won't get the full charge or it will discharge as soon as it is removed from the power supply.

I hope this helps.

Cindy Wells
(the server UPS's tend to be a better choice if you want to replace the battery and keep the UPS.)
8/21/2011 12:29:40 AM • APC (BE500U-WEB)... • Answered on Aug 21, 2011

Why ups voltage drops by

when run on battery gives output 150 volt
but battery ok
8/19/2011 4:18:41 PM • APC (BE500U-WEB)... • Answered on Aug 19, 2011

In My APC UPS, continuous beep sound is coming

Unfortunately that signals an internal fault with the UPS and it requires immediate replacement / repair. Do not continue to use the UPS at all.
8/12/2011 6:54:25 AM • APC (BE500U-WEB)... • Answered on Aug 12, 2011

I'm looking for all manuals that came with a APC

You could try


if you need a user manual


if you want the schematics etc

We've used them in the past and found them very good.

Also if it is not listed then ask via the link and they
will probably be able to get it for you.
7/9/2011 12:22:52 AM • APC (BE500U-WEB)... • Answered on Jul 09, 2011

UPS swithed off as soon

The first thing to check is to make sure you plug you PC to the backed up outlet on your UPS.
As far as I remember only 3 out 6 outlets on that UPS are battery backed up. The other 3 are just surge protected.

It's printed on the UPS panel.

Hope this will help you
3/29/2011 2:53:51 PM • APC (BE500U-WEB)... • Answered on Mar 29, 2011
Not finding what you are looking for?
APC (BE500U-WEB) (BE500UWEB) UPS System Logo

47 questions posted

Ask a Question

Usually answered in minutes!

Top APC Computers & Internet Experts

Cindy Wells

Level 3 Expert

6556 Answers


Level 3 Expert

85241 Answers

Brad Brown

Level 3 Expert

19165 Answers

Are you an APC Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

View Most Popular

APC Computers & Internet

  • APC Computers & Internet

Most Popular Question

hear continous clicking be500r ph ups

  • Computers & Internet