Vertiv Liebert PST5 UPS - 850VA/500W 120V Standby Power, 8 Outlets, Battery Backup with Surge Protection, LCD Screen, Energy Star Certified, 3 Year Warranty, Free Shutdown Software (PST5-850MT120)

Good solid UPS (Uninterruptible Power Supply) for desk top computer. Keeps internet going even when power goes out, since router, PC, monitor, etc are plugged into it. Carries me thru minor burps, and lets me do an orderly shut down if power is going to be out a long time.

The 850VA works well with my my Win-10 desktop PC and gives me about 8 minutes of run-time, starting shut-down of my PC at about 6 minutes.Wanted something to keep my rig running for a short time during short power outages and which shuts down my desktop PC automatically if the power is out more than a few minutes.I Hhave the UPS connected to my Win-10 desktop PC: 800 Watt power supply, 64GB RAM, 8GB GPU Card, two 24 inch monitors , a KVM switch, a 7-port USB hub, illuminated keyboard and mouse, and two Wi-Fi routers (two different ISPs).I followed the instructions and downloaded the software to manage automatically shutting down my PC if the power stays off more than a few minutes. This seems to shut down my PC when the battery power gets down to 15% , but there are no options for setting the action when it hits 50% or another number the user may prefer.Great product at a good price which Will help protect my PC from a hard shut downs due to short power outages.The 500VA gives me about 12 minutes if run-time with my 55inch TV and DVR. For short power outages this eliminates the nearly ten minute reboot of the DVR.

I have a few Liebert UPS units running, this is the more advanced one with an LCD screen and higher wattage.This unit does the job of keeping power even and provides battery backup for a few minutes during outages/brown outs. This all works well, particularly if your power is not the best quality.The PowerAssist software, which you must create an account to download, is utterly useless on the Mac side of things. There is no difference between Mac OS's built-in UPS software and this Liebert PowerAssist software - the manual shows the Windows version and all its glorious options with tons of information regarding your power and usage.The Mac version merely shows the UPS battery level and no other data or control options - nothing at all like the manual's screenshot. Very disappointing... I immediately removed it manually from the system (there is no uninstaller) and am using the built-in Mac OS Energy Saver instead.One of the primary reasons I bought this unit was to monitor key information - that I cannot access on a Mac - nor do I wish to crawl on my knees to see the LCD screen. So please keep this in mind if you are a Mac user, because we are being treated as second class citizens by Liebert.

The 350 VA model is not good for a PC.The Power Assist application - which worked flawlessly for me on Windows but not on Linux, will tell you that even if the average usage is below 50%, the moment you start a demanding task (a video rendering/conversion, a Photoshop filter or a heavy game), the consumption will go through the roof. It will hit above 100% of the UPS capacity, and after a few desperate beeps, your computer - and the UPS will be shut down, no questions asked.The solution is NOT to mute the UPS speaker. That will conceal the problem, not solve it. The solution is to get a more powerful model, that will never reach 100% capacity. Then you will not hear a single beep.This device can be good for your router, NAS, maybe TV. You decide which devices you want just to protect from surges, and what you want to continue working even after a power outage. But 359va it is not good for your desktop PC - unless it's a very humble piece of hardware, with a very low wattage CPU.On the photo: on the left side (surge only) are connected non-critical devices, such as the amplifier, or one monitor. On the right side (battery backed up). only one computer and one monitor.Interestingly, on Linux the consumption was much lower for the same tasks. The UPS never shut down. Under windows, the beeping was much more frequent and the shut down was inevitable.I had a few shut downs already, so the UPS will be upgraded to 600 VA.A year later: I've got two 600 VA and had to buy a third one, 850 va after I added a Nvidia GPU to my PC and started playing with local AI.I was able to launch the Power Assist app on Linux. The trick is to edit the 'powerassist' file. It is not an executable but a script that launches a Java application.

So far, works well. No clue as to longevity of battery. Good value. No outages since it was put in use, so no ability to rate its functionality.

Shortly after I purchased and set up this UPS it would start emitting between 1 and 7 beeps throughout the day. The LCD display showed there was a full charge, very light load and the AC icon was lit so there should have been no reason why the device would beep. After trying two different customer support numbers (both had been disconnected) I reached a support person who told me the outlet must be causing the problem as there was nothing wrong with the unit. I spent $150 to get an electrician in who confirmed there was nothing wrong with the outlet and power to it. The company still refuses to reimburse me. Now I am unable to return it and cannot use the unit.

Nice unit. Like having a display to know status of battery.

I live in an area where our power goes out constantly. Easy to set up, comfort in knowing i can get to my 3d printer in time to shut down if needed, heavy duty, small enough to put out of the way, works well to protect my electronics, no smell, connected seemlessly at a nice price point.