I had a power outage this afternoon. I had saved my work beforehand and was away from the computer at the time. When I saw the lights go out I went to the computer to shut it down. It was already down and the battery backup was not telling me it was dealing with a power failure. The power is restored and all is working normally. But I'd like to figure out why the battery backup failed. Recommendations on what to look at will be appreciated.
The battery backup is a Belkin F6C325-SER, which is rated for 325 VA or 211 W. I've had this unit for quite a few years, possibly over 10. According to my Kill a Watt, my computer is drawing 1.40 A @ 118.2 volts (drifting between 117.9 and 118.4), and the Kill a Watt says 112 W. 118.2 V x 1.4 A = 165.48 VA. When the power failed I also had one monitor powered through the battery backup. I have no monitor plugged in to the battery backup at this time -- just in case it was the straw that broke the lead-acid battery's back. The monitor that was plugged in at the time of the power failure is currently drawing 0.29 A @ 118.2 V (similar voltage drifting as above), 24 W. 118.2 V x 0.29 A = 34.278 VA My other monitor is drawing 0.25 A @ 118.2 V, 20 W. 118.2 V x 0.25 A = 29.55 VA The battery was deemed to be working by a battery shop back in 2010. In theory I should be able to run the computer and both monitors. (112 + 24 + 20) W = 154 W. (165.48 + 34.278 + 29.55) VA = 229.308 VA Is there some rule of thumb that says one should only count on some percentage (less than 100) of the rated capacity of a battery backup? Thanks for hints, ideas, pointers, etc. -- Regards, Dick Steffens _______________________________________________ PLUG mailing list [email protected] http://lists.pdxlinux.org/mailman/listinfo/plug
