Question about CyberPower 485VA UPS Backup (BE485) UPS System

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I have a cyberpower 485VA and after 10 sec it turns off and beaps

This is the first time i have had this problem it wont stay on or even work as a regular surge what do i do? help!!!!!

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It sounds like you need a new battery. The UPS will not turn on if it detects that there is a bad battery. Here's a link to a replacement:

Posted on Jun 02, 2009

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Your ups over load or battery weak turn the of load then chek the ups

Posted on Apr 21, 2009

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We have a CyberPower 485VA. It looks as though the battery needs replacement. Can you tell me please, what do we need to do in order to have the battery replaced on this product?

The user manual, here; will guide you through removing the battery and installing a new one. You can buy a new one here:

Feb 28, 2011 | CyberPower 485VA UPS Backup (BE485) UPS...

1 Answer

It turns on and off like every 20 seconds

Looks like you need a new battery.Your model discontinued and there is some support for it.

The UPS does not perform expected runtime.
Battery is slightly worn out.
Contact CyberPower Systems about replacement batteries at

Nov 30, 2010 | CyberPower 485VA UPS Backup (BE485) UPS...

1 Answer

Every so often, usually about 2-3AM about 4 hours after I have quit using the computer the whistle on my 485VA starts. Why

hi8xig, It could be that the unit detects a line-in disturbance caused by "off hours" or "quiet hours" work being done by the power company. That time of day (12 midnight to 5 AM) is when they do "cutover" or upgrade work. Yes, you can probably rent a piece of electronic gear that will monitor your power line and will log and store (record) any type of unusual activity that takes place on the ac line. Dranetz-BMI is a company that makes AC line event recorders. They range in price from $600 to $10k. Call CyberPower and see if they have a solution for their ups. Or you can just unplug the unit from wall when pc and other stuff has been turned off. 12fixlouie

Apr 01, 2010 | CyberPower 485VA UPS Backup (BE485) UPS...

1 Answer

The bottom roll on the UPS is not working at All. the top is but that is not with battery backup. Is there a reset on it for the bottom roll

no if ups is more than one year old then battery is faulty or open the ups and check the battery fuse and also check the mosfets if faulty replace it

Feb 26, 2010 | CyberPower 485VA UPS Backup (BE485) UPS...

2 Answers

My 485VA back up system beeps after I have a few things plugged into it. Does the beeping mean the battery is bad?

Try only the computer and monitor - it may be overloaded, 485VA is around 400W only, so it won't accomodate much more than a standard computer + monitor.
Especially a laser printer is very power consuming and should not be connected to any UPS.

Nov 28, 2009 | CyberPower 485VA UPS Backup (BE485) UPS...

1 Answer

My tv cable box and radio are connected to my cyberpower 485. quite often it shuts off my cable box and tv and beeps, the radio does not shut off. This time when I pressed the siver button it tries to...

It sounds like it's either at the age where the batteries need to be replaced or there is a problem with a component 'Capacitor or transistor' on it.
Is it still under warranty. If not - if you pull the batteries out of it you may be able to find some replacement ones on line. Place the part # of the battery in a search engine.
A Good place to try is CyberPower's website also.
A/V Guy

Nov 19, 2009 | CyberPower 485VA UPS Backup (BE485) UPS...

3 Answers

Beko SCG 7521 gas cooker flame won't stay lit in oven.Once you light the flame in the oven & hold in the oven button for the recommended 10 secs it cuts it's self off when you release the oven...

bloody hell that is so scarey i have the same problem and its round about the same time yours went funny if you have a solution can you let me know as im looking for the answer myself

Oct 08, 2009 | Ovens

1 Answer

Loud beeping sound constant. Turned off beep stops. As soon as I turn on it is beeping again??

Is the battery connected internally and the unit pluged in the wall,by the sounds of it ,You may have a bad battery.Check to seeif infact it charges.
Good Luck

Sep 08, 2009 | CyberPower 485VA UPS Backup (BE485) UPS...

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