Eaton 5S550 UPS Battery Backup & Surge Protector, 550VA / 330W, AVR, Line Interactive 5S Power Supply 550VA

2 Years of use in front of a gaming rig was too much for it. When under anything but a modest load, it's begun failing the test & discharge most UPS batteries run about every 2-3 days where they temporarily click over to battery power for about 5-10 seconds or so. Whole system goes dark and I get a nice loud alarm and bright "OL" LED, which of course means "Overload." This is probably fine if you're running something like a 600w PSU or a smaller, older, or low-power setup. If you're running the typical office workstation, you're also probably fine. If you're running a rig with a power supply rated anywhere close to this battery, you'd probably need a higher-rated battery to just keep the battery from failing under load. Of course the PSU is not pulling 100% of its rating (even if Gold or Platinum certified), but you get the idea. Both items will wear over time, and this battery held up for about 2 years (900w UPS with a 900w PSU) and simply will no longer keep the system on while the GPU is on (and thus the PSU kicks up the draw). Otherwise it's quiet enough. I did not hear it chirp the entire time, which is a huge problem with other UPS.

I got this an plugged in my flat-screen TV, cable box, and wifi router. When there is a power outage, I can still get Internet and watch some TV. As well as able to charge my phone, etc, during the outage. Worth every penny for peace of mind.

I have had this for a few months and it has worked flawlessly so far.

Has already saved me a few times. Was working on something and power flickered for a second. PC stayed on without a problem. Finally, I can flash my BIOS during a thunderstorm with confidence.

I have a lot going on in my set up. Multiple PC's, big monitors, Network appliances, basically sitting in a server room.... Was able to handle it all no problem.