I have WEP 600VA UPS for my PC. It has 15minutes backup and worked perfect since last 3yrs. But from last 3days its backup time drastically decreased. Its not giving even 5minutes of backup. And without any pop up or notice its getting restarted for every 5 to 10 minutes. restart is occuring after using system for 1 to 2 hrs continously. What shal I do to fix this problem?
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It sounds like your UPS might need a new battery. Three years is not an unreasonable lifetime for a UPS battery.
If your computer is experiencing loss of power while the UPS is connected to the mains, the unit might have developed a fault.