I have a (refurbished) APC Back-UPS LS 500 I've been using for a year and a half or so, and recently when the power's been crappy (thanks to bad drivers...) I've noticed it's no longer doing the thing ...

I'm using a Cyberpower 425W UPS on my main system and for networking hub. They're six years old and work as planned. They beep and supply power long enough to shut things down in case of an outage. So ...

Uninterruptible Power Supplies are used to ensure that mission-critical systems, often computers or servers, remain running during power outages and brownouts. UPS systems also protect against power ...