Iím currently using a CyberPower CP1500EPFCLCD rated 1500VA/900W which Iíve had since March last year. I mainly suffer from sort interruptions and it has performed faultlessly in those circumstances. Since Iíve had it we havenít had a lengthy power outage (
and touches wood), but some have been at least of an hourís duration.
With just my modem/router, time capsule, NAS, DECT base station, analogue telephone adapter and Raspberry Pi connected it reports a 3% loading and a battery run time of 143.5 minutes. With my Mac Pro and thunderbolt drives connected the loading is 18% with a lesser battery run time of 60 minutes.
The CyberPower runs very quietly unlike some of my previous UPSs which have suffered from annoying hum. Iíve also had issues with two previous APC models going to battery for no apparent reason and never reverting to the mains.