Question about CyberPower 525SL (CPS525SL) UPS System

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

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. Does the battery need to be replaced or what?

Thanks, John

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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.



Posted on Dec 30, 2009

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Hi there,

This sounds like a battery per the trouble shooting guide from Cyberpower. It's the most common issue and the batteries last 3-5 years. You can find a replacement at Battery International: http://www.batteryinternational.com/cyber-power-cps525sl-ups-battery-ups-batteries-f1.html

Posted on Oct 22, 2009

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Had the identical problem. I replaced the battery and had the same fault. I held the power button down and unplugged the unit. It beeped a couple of times then stopped. I waited a couple of minutes and plugged it back in. I powered it up, it beeped a few times and then went normal. Appears to be working.

Posted on Oct 26, 2011

  • Bo Chen
    Bo Chen Aug 08, 2013

    same deal here, beep on, beep off x 3 then beeeeeeeeeeeeeeeeep and off, comes back again beep on beep off x3. will try this suggestion and see if that fixes it. btw spent $22 on new battery thinking that was the issue

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Where do I purchase batteries. I live in Melbourne Fl.

Posted on Jun 16, 2009

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E-MAIL I RECEIVED FROM CYBERPOWER:

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

MY PROBLEM: NOT the battery!

Posted on Mar 28, 2009

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Green light off reset button does nothing

Posted on Nov 10, 2010

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If you go to http://www.apexbattery.com/b-b-bp7-12-battery-sealed-lead-acid-batteries-b-b-batteries.html for that battery it is six bucks cheaper than the above link, and a dollar less shipping.

Posted on Mar 09, 2010

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Detach the memory card or RAM of your cpu and attached it in a different slot beside it.

Posted on Oct 27, 2008

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Jan 20, 2010 | CyberPower 525SL (CPS525SL) UPS System

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


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

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


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

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(Cyberpower 525SL) not working properly


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

Jul 03, 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

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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.

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