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 ...

When it comes to protecting your electronics from power surges and power outages, an uninterruptible power supply (UPS) can help. The APC Back-UPS Pro Gaming UPS from Schneider Electric delivers ...

I use the APC Back-UPS ES 550, and the newer APC 550UA model is available from Amazon for $79. Luckily, UPS’ are plentiful. Jumping on to Craigslist or Facebook Marketplace, it’s easy to find ...

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 ...

Find out more about how we test. The APC Back-UPS ES 700 is an offline UPS, and in this respect it suffers in comparison to the two line interactive models we have reviewed this month, but you do ...