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 have an APC Back-UPS CS 350 unit that has all lights flashing about once every two seconds, with the regular "power on" LED lit green. All I've been able to find regarding other APC units that have ...