After what's been said here, and the data that Rob sent, it seems that the UPSs are faulty; I cannot think of any reason why they should yank the power after 5 minutes, without any warning sign, and with brand new batteries. Even stranger that it still does this when the power is interrupted only briefly. It does not appear to be a driver problem, as the situation still occurs even when no computer is attached at all.
On the other hand, did someone say that it does *not* do this under Windows? That seems bizarre. Perhaps there is some proactive (and doubtlessly top-secret) command by which the driver must tell the UPS not to shut down? I would advise to stay away from this brand of UPS. -- Peter Udo van den Heuvel wrote: > > Doug Reynolds wrote: > > >> As I wrote to someone else recently on this list: A battery can > >> appear to have a good charge state (= voltage) even when it's gone > >> bad & developed a high internal resistance. That happened to me a > >> while back when I wasn't even running any software to control UPS. > >> UPS had been running for years, with charge state good (LEDs). I > >> pulled power, & it dropped out after maybe 10 secs ! 2 of the 4 > >> batteries had good voltages but high internal resistance > > I really doubt it is the battery. I have the same CyberPower unit, new > > out of the box, and it does the same thing.. > > Theoretically it can be an issue so I will swap the two UPSses I have. > Yet they are fairly new so I would not suspect hardware issues like a > weak battery. > > _______________________________________________ > Nut-upsuser mailing list > Nut-upsuser@lists.alioth.debian.org > http://lists.alioth.debian.org/mailman/listinfo/nut-upsuser > _______________________________________________ Nut-upsuser mailing list Nut-upsuser@lists.alioth.debian.org http://lists.alioth.debian.org/mailman/listinfo/nut-upsuser