Question about CyberPower 525SL (CPS525SL) UPS System

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(Cyberpower 525SL) not working properly

When I turn on my UPS (Cyberpower 525SL) it turns on and then in a couple of seconds beeps and turns off again, then a second later it beejps again and turns on, then beeps and turns off. It just keeps doing this. The wiring fault light is on also and the cord is plugged in to the wall outlet. I have plugged it into another outlet and it is still the same. Does the battery need to be replaced or what?

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  • bbuster58 Aug 05, 2008

    My Cyberpower 525SL "power on" light turns on and off.

  • TamKales Aug 14, 2008

    My 525SL keeps clicking off & on which then turns whatever is plugged into it off an on every few seconds. The power light goes off and on as it clicks. What is wrong with it?

  • topgator May 11, 2010

    Where do I purchase a new battery. I live in Melbourne , Fl

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There is no other known cause of the cycling on/off behavior aside from
a bad battery. IT is possible that some component of the battery relay
or inverter has failed. If this is the case it would not be repairable
outside of warranty.

Regards,
Joel Gerlach
Cyber Power Systems (USA), Inc.
877-297-6937 x7917

Posted on Mar 28, 2009

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In response to topgator ...
If you are having similar problems and looking for a replacement battery you could check out http://www.batteryinternational.com/ups-batteries.html They should have the battery you need and they can ship it right to your house.

Posted on Jun 24, 2009

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I was having a problem with mine that the battery back up plugs no longer worked. I figured the battery inside was bad. I removed the battery and tested the wires that go to the battery to se what voltage was being out put to those wires to see if the unit would charge a good battery. If the unit was off the voltage was 14.1 volts which is good. I turned my unit on and my unit was displaying the symptoms your units are are now experiencing. Sounds like your batteries are bad.

Posted on Aug 22, 2008

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1 Answer

One side of my Cyberpower 525SL stopped working. When i press the red button the green light comes on, but goes off quickly accompanied by a beeping. The TV, dish, and vcr/dvd continues to work. Help...


Hi droger68,

The reason for the issue that you have right now with your Cyberpower 525SL is a bad battery. This means that some of the battery relay's component or relay has failed. You may contact the manufacturer if it's still under warranty. If not you may check this site they do have battery for your machine.

Hope this helps.

Thank you for using FixYa.

May 24, 2011 | CyberPower 525SL (CPS525SL) UPS System

1 Answer

It turns on then it starts going on and off it is only the three with battery and surge that won't work


may overload the ups. try to run it without any unit conected to it.
also possible is that inside batteries wont charge proper - replacement will help.

Feb 07, 2011 | CyberPower 525SL (CPS525SL) UPS System

1 Answer

Quite awhile ago, one side of the unit went dead. Uesterday, after hearing a couple clicks, the unit will beep a few short beeps, then after a little bit, there will be a few short beeps again. I press the...


sounds like it is failing. When was the last time you tested its capacity? Test it to see how long the battery works. If it doesnt then get a new one or send it back where you got it.

Mar 09, 2010 | CyberPower 525SL (CPS525SL) UPS System

2 Answers

Battery side of UPS beeps on and off when turn on.


How old are your batteries? If they are over 3 years old it may be telling you that its time to get new batteries. You can check these using a voltmeter too to help determine if the batteries are the problem. You can find replacements at http://www.batteryinternational.com/ups-batteries.html

Jul 10, 2009 | CyberPower 525SL (CPS525SL) UPS System

1 Answer

Unit does not back-up (stay on-line at all) when power goes out.


If the battery is over 3 years old then it most likely needs to be replaced. Since it works fine except for when it is relying on power from the battery, then a new battery should make it just like new. http://www.batteryinternational.com/ups-batteries.html should have the battery you need. Hope that helps.

Apr 16, 2009 | CyberPower 525SL (CPS525SL) UPS System

8 Answers

Cbyer power 525Sl keeps turning off and on and beeps.


I have the exact same issue with my 525SL.
When you push in the red button - the green power light comes on for about 5 seconds = then the light goes out and the device plays a single long beep for about 5-8 seconds.

Given the dialogue here - I took out the battery and bough a brand new BB replacement battery and returned it into the unit as it should. The device continues to have the same behavior.

So it is NOT always a new battery that will fix the system.
Don't jump into spending $30.00 for a replacement.
Look into this further or you'll wind up wasting your money.



Oct 26, 2008 | CyberPower 525SL (CPS525SL) UPS System

4 Answers

Power keeps going on and off


I have the same problem.
It is most likely the battery.
I tested my battery on a Shumacher trickle charger, and the battery wouldn't hold a charge.
This is a common problem with UPS systems that use sealed lead acid batteries.
The longest life that you can expect with these types of batteries is 5 years MAX.
The battery can be replaced with a Radio Shack 12V/7200mAh Lead-Acid Battery
Model: CNB-GP1270F2 | Catalog #: 23-9030
Here is the link for the UPS users manual.
http://www.cyberpowersystems.com/user-manuals/CP550SL_UM.pdf
To replace battery, (unplug AC cord), turn the UPS upside down on floor or workbench.
Remove the 6 deeply recessed phillips screws, then pull the bottom off.
Remove the wire leads from the old battery (pull on the connectors, not the wires). Install new battery (red wire to red or + sign) and replace the bottom and screws. Careful, tighten the screws finger tight (plastic strips easily).
Plug in UPS and you should be good to go.
Hope this helps

Jun 07, 2008 | CyberPower 525SL (CPS525SL) UPS System

1 Answer

CyberPower 525SL Failure


The erratic behavior and beeping could indicate that the Gel battery inside your UPS needs to be replaced, and is usually less expensive to replace than the entire UPS. You can remove the battery and contact a local or online source for a replacement. I replace mine through a local automotive battery supplier, and it' never cost me more than $20.00.

May 24, 2008 | CyberPower 525SL (CPS525SL) UPS System

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CyberPower 325SL backup system


How old is the unit and have you ever replaced the batteries?

Sep 14, 2007 | CyberPower 325SL (CPS325SL) UPS System

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