20 Most Recent CyberPower OfficePower 825AVR UPS System Questions & Answers

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You can find the user manual for yoru Cyberpower CPS825AVR here: Click Here.
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It sounds as though the UPS is not receiving power. Check that it's cable is properly plugged into the wall. Also verify that it's internal ground fault interrupter has not tripped, it's usually a little red button on the back of the unit, it should be pressed in and should stay that way, if it pops out then there is a problem with the ground of your electrical outlet. Also check that the breaker for that electrical has not tripped at your fuse box.

Since the UPS is not receiving power the batteries have discharged and that is why your computer cannot start, there is not enough juice from the UPS to boot it. That is also why it is making a noise as most UPS's sound an alarm to indicate that they are not connected to power.

There is a chance that the batteries in your UPS have gone bad or that something has become faulty in your UPS. Try plugging your computer and monitor directly to the wall bypassing the UPS to see if they work fine.

look for your computers home page and there you should find all the drivers for your specific make and model. make sure you know what kind of precessor and soundcard and video card you have though

You may need to change you backup batteries.

Follow this link, to download PowePanel Plus for your UPS.
Click Here.

Sounds like the UPS battery is bad, or the circuit break on it has gone. Is there a reset button on the UPS? Do you have the program that came with the UPS to check the battery status, those programs typically let you run a test on it also.

The cyberpower website hosts the software for free. Go here http://www.cyberpowersystems.com/support/product-support.html select your model and it will take you to the appropriate software suites.

Please discard. Probably a short circuit in the inverter!

It may not be dead yet. Does it supply output? You have not mentioned. It would be considered dead if it does not give any output. Is the battery fine? If the battery is fine and there is no output then it may be dead.
So, check the battery for any sign of life.
Check the output.
Check output with it plugged into mains.
If all are negative then it is dead.

just unplug the UPS and check for how long it runs on batteries, if time is short just replace the batteries. if you are using a line interactive UPS you may have to replace it by an online UPS

Your not asking the right question. The answer is dependent upon how long you want the backup to work. Does a battery fit in the unit or is it alone? If you were to connect a car battery to the unit it would run for many hours, say a motorcycle battery would run maybe an hour. It is all about the time you want for run time.