Tripp Lite 550VA UPS Battery Backup Surge Protector, AVR Automatic Voltage Regulation, 8-Outlet Uninterruptible Power Supply, Dataline Protection, 3-Year Warranty & Insurance (AVR550U)

When Hurricane sandy hit, my company's office in Nag's head was flooded.Everyone followed our instructions to put all elecronics up on their desks and have none of them on the floor... but not everyone unplugged them.When the building flooded, every computer behind a Tripp-lite UPS \ Surge supressor was undamaged.The devices completely died, some with major electrical damage, but they did so in a manner where that surge was not passed on to the devices. I've heard time and time again how they honor their lifetime warranty, replacing any failed device you send them pictures of... but honestly, if it dies protecting my stuff, I feel they deserve more business and I'll happily buy replacements.I have never lost any electronics behind a Tripp-lite. So when it came time to get some UPS units for my personal computers at home, I picked up these. I was very thrilled to see that without even loading software, I could plug in my desktops to the UPS with USB and it immediately told me the state of the battery as though I had a laptop. I could even set windows power management to do shut downs depending on battery percentage (just like a laptop). Again, this is all without power management software.The price is excellent for what you pay for and I sleep better during storms knowing my equipment is protected.

Bought to back up the NVR for my cameras - small, unobtrusive, enough capacity for intended use. Good brand, price was right. What's not to like?

Best price on this model. Limited features but that is expected since this is the least expensive I could find with AVR. AVR is essential to protect equipment from voltage fluctuations.

Already had to go through a black out this morning. The battery backup did it's job just as described. Couldn't be happier!

First, for reference I am an electrical engineer so take that into account. We live in a very rural location with relatively frequent power disruptions, most of subsecond duration. We had multiple instances where the UPS did not activate but the TV powered itself off from the power glitch. More recently, we would have very short duration glitches that caused the UPS to completely power down, requiring us to manually restart it - and of course all the attached equipment. In short the UPS not only did not protect us from power events it made them worse since the satellite box & Starlink router took a significant time to restart after we turned the UPS back on. Consigned the UPS to the trash heap after only about 2 years.Tripp Lite tech support was less than useless, not listening to my problem description and going to a "have you checked this" script.I should note that previous experience with Tripp Lite products while in the computer maintenance business was not good, reviews led me to believe they had improved. My experience suggests this is not the case.

Tripp is a very good company. I use a little of their surge protectors. Decided to try a UPS to replace one that failed. 3 yr warranty.Did a little testing. I suspect these are representative of other brands as well. Fully charged, it provided 52 watt hours of energy after I unplugged it (simulating a power outage). So if your PC uses 26 watts, it should run a couple of hours before the UPS dies. It also burns about 15 watts of power on its own when it is fully charged and waiting for a power outage. Like leaving a medium sized LED ceiling light on 24/7. So that’s the price we pay for having backup protection.

Tripp Lite (owned by Eaton) AVR550U UPS's USB port monitoring and management functions do not appear to be functional even after installing their proprietary PowerAlert software and trying two different USB cables on a Windows 11 PC so ether the UPS itself is defective out of the box, or the device doesn't follow any common standards for communications as it also will not connect to a Synology DS224+ NAS. I suggest looking elsewhere if you need to automatically shut down upon a power outage, this is a disappointment.

I have seen some bad reviews on here and all I can tell you is I have been running two computers off this one unit for over 1 year and no problems. It was running one computer for a few years before that and I have only had to replace the battery once.