<br><br>The good thing is that APC made it semi-painless to switch. you register your RMA and they send you a new UPS together with instructions on how to send back the old one. Of course your ...

I have an APC Back UPS CS500 - it is just running one PC, so not overloaded. Just recently it started clicking onto battery when there was no sign of any kind of power flicker. First a click, then it ...