Maybe a difficult question: Can anyone give an evidence/experience-backed answer to what the lifespan should be for the main unit of a UPS/Battery Backup? Assume it has been kept in ideal conditions and not abused in any way, and has had regular battery replacements. Reason I ask: I have a Cyberpower CP1350PFCLCD which is now over 12 years old. I haven't had any issues that I can specifically attribute to it, and it still passes all self-tests. Being that it powers my main rig (with... Read more Weiterlesen...