All of my computers and network gear are on UPS units. I have had to replace the battery in one APC unit, and it was available. When I first set up a home computer, I tested the power at my home with a test recorder that printed out each sag, surge, dropout, etc. on a strip of thermal paper tape, like from a cash register. Normally if you left this unit plugged in and running for 24 hours, you might get a few of these instances and a strip of paper a foot long. When I fired it up at my home, the paper tape immediately started spooling out and never stopped until I finally shut it off after I had about 50 feet if recorded power glitches. The power I get has improved somewhat since then, but I still get several outages per month, so UPS systems are the only way to go for me.

