Re: Cyberpower CP900EPFCLCD UPS not charging
just an update. It was a bad (new) battery.
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Re: Cyberpower CP900EPFCLCD UPS not charging
voltage is correct, sinewave I'm not able to check but I tried to power an active pfc psu so I presume is good.
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Re: Cyberpower CP900EPFCLCD UPS not charging
I really do not understand, I tried with another battery pulled out from another ups.
If I power on UPS whithout battery, it shows 100% charge level (?!?).
With AC power: 13,6V on battery and current flow of 0.5-1A.
On battery: voltage holds above 12V for 30 seconds then drops quickly below 10V and UPS shut off.
I've just ordered another battery to test tomorrow.
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Cyberpower CP900EPFCLCD UPS not charging
Hello,
I have a problem with a Cyberpower CP900EPFCLCD UPS unit that seems not charging the battery.
With AC power connected I measure 13,50V on battery terminals.
If I unplug AC cord, voltage drops below 10V after no more than 30 seconds causing UPS to shut off.
I'm testing with a load of 20W.
Plugging AC power again UPS turns on and battery charge level indicates 100% (even if I disconnect battery!!!!).
Tried with new battery same behaviour.
Therre is no sign of blown components. Could you help me troubleshooting...Last edited by SMDFlea; 05-20-2023, 10:12 AM. Reason: Added "Cyberpower CP900EPFCLCD" to thread title
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