Please help, yesterday the unit was making a persistent sound and I pushed the red button on the left to stop it but then when I push it again the power button (green light) goes on and the desktop lights up but then everything turns off - this cycle repeats about four times then finally when it turns off after the fourth time the continuous sound of the cyberpower 825 avr unit starts up.
The batteries in these units are replaceable. Don't let someone talk you into buying a new system just because the batteries discharge or go bad. I have already replaced the battery in mine and it is a whole lot cheaper than buying a new back-up system,
The batteries are DEFINITELY replaceable in this unit. Plus, this UPS has the AVR feature so don't throw it away. New batteries can be found at: http://www.batteryinternational.com/cyber-power-cps825avr-ups-battery-ups-batteries-f1.html
1. A 5 year minimum life for a UPS battery? I assure you that if you could build such an item, you'd quickly become very rich!
2. Of course the batteries in the CyberPower 825 are replaceable.
I have one just like it and there might be a problem that you are overloading the unit and that is why there is a constant beep. Try unplugging some or all of the plug and see what happens.
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.
I would say that batteries in a UPS should last at least 5 years, but that all depends on the charge/discharge cycles they go through and how much load is put on them. I don't think the batteries in a unit like yours are replaceable, probably time to buy a new one.
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Thank you for your help! I've had this unit for several years now - do you know how long they are supposed to last? I will try out your suggestions. Thanks again.
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