For the tower and monitor, it gives you plenty of time to save and shut down, although I mostly bought it to protect against power surges.

After 2 years, it became useless, literally. It can't even stabilize the voltage anymore, the power drops for a fraction of a second and everything shuts down. At first, it was very good, it could hold a 500W server for 2 hours.

EDIT: I changed the batteries and it returned to its initial functionality

I have no idea how long it lasts during a power outage, but I will return it because of the incredibly annoying noise it makes. The quality of the tiny display screen is also terrible, as it is constantly dimmed. I have gone through more than 10 UPS devices, and this is the worst in terms of basic issues. I would give it 2 stars, but I don't know how long it lasts during a power outage, so I'll give it 3 stars.

I made the mistake of not returning it as I said when I bought it, and now I regret it. After 1 year and 2 months, the fan suddenly started working, which makes a lot of noise and only shuts off when you unplug it. The machine is in the same place (at home) since I bought it, it has plenty of space around it to say that it doesn't overheat. I have requested a return and will update on the progress when it is completed.

3 stars: It makes a strange noise, which you might get used to after a while (and I don't mean the familiar beep when the power goes out, which we all know).
The second negative thing I found is that the program that comes with the product can no longer run because Adobe's flash player has stopped existing... (I wanted to disable the noise it makes when the power goes out).
As for the battery life, it lasts quite a long time for surfing, but only about 10 minutes for gaming.
Update 23/11/2023: For 2 years without changing batteries, the PC stays on for a few minutes.
However, what is unbearable is the noise. It makes even more noise, as if something inside is rattling, which comes from the power. Also, to change the batteries, I need to get a special screwdriver (thin and long) to reach the screws.

Value for money, the Viewpower UPS provides many customization options, and during a power outage and 30% load (850VA), it can easily operate for 15+ minutes. The compatibility it has with QNAP NAS via USB is also interesting.

I would like the 650/850 VA model to have an Ethernet port for centralized network management.

I used it for a professional ultrasound machine 1100VA. It replaced an ON-LINE one that I had been advised to get, but it made noise and interference at high frequencies of the machine.
After getting opinions from 10 electricians and technicians, I bought this LINE-INTERACTIVE one which is silent, smaller in size, and provides satisfactory protection.
So far, it's perfect. I have had it for about 2 months.

The review concerns the 2000VA-1200W.

It was purchased about a month ago from a nearby store, for a desktop with a 1050W power supply, a CRT monitor, a flat screen monitor, a router, a lamp, and a radio. Completely silent, it is located in a bedroom.
Today, on 15/2/21, during a power outage, it lasted for about 15 minutes, with the last 10 minutes running World of Tanks on one screen and the program window and MSI Afterburner for the Radeon Sapphire on the other. As for its durability over time, only time will tell.

24-8-23
After 2.5 years of operation, the machine is still going strong and performs its duty flawlessly, as evidenced by today's 2-hour power outage, where the battery held up almost as well as when it was first purchased.

It seems to work well on vacations. For its price, it is good. However, the word "quiet" does not describe it. In a quiet room, you can hear the buzz/humming of the electricity. If you want to record or sleep in the same room, it is completely unsuitable. If you are going to work with low music or play games on a PC/PS/Xbox, it is fine. The temperature it reaches in normal status is 45-50 degrees Celsius in specific areas (in the middle and above and behind). I have not measured it under full load. On top, it has a TV, PC (650W), PS3, pellet stove (320W), various electronics.

It has 2 negatives. The LCD screen is not user-friendly. I would prefer it to be bigger and display all these elements simultaneously.
The second negative is that the fan does not work when charging the batteries. And it would be good if the user could choose through the program when the UPS shuts down. For example, at 25% or 35% battery.
Other than that, everything is fine. Regarding the temperature, as they said, it does get a little hot on top.
Former owner of birmore. I bought this because I believe it will have better service

I have bought 2. One 650VA and one 850VA. The software that comes with it in the package does not work as it requires flash player which is no longer supported by any browser. I downloaded the new version of the software (HTMLv5) from https://www.power-software-download.com/viewpower.html and it works perfectly. Essentially, it sets up a small web server on the PC connected to the UPS and you can access it from any PC on the same network (or via VPN). The beep sound can be disabled from the software. You can also set up an SMTP server and it can send you emails whenever the power is cut off or restored, and more. It has many settings to customize it to your needs. In the LCD model, it has a touch screen display and it is useful if you want to see various interesting indicators, such as load level, battery level, input and output voltage.

Very good ups. It has not presented any problem for almost a year, it is the best for desktop

Perfect and at a perfect price! I have had it on my computer for a year and I have had no issues with power outages

The one star, it was lost because the software doesn't work properly. Otherwise, the UPS seems pretty good. I have connected a printer, 100W speakers, 2 monitors, and the desktop, and the power consumption appears to be at most 20%. The fan only works when there is a power outage, which means it is silent the rest of the time.

The only downside is that the plastic box smells bad. The pc I have has a 600 watt power supply and the ups draws a load of 30% in bf1 game. The screen is touch-sensitive and displays voltage and load information. It is connected with a cable to monitor useful information about the ups. You should not connect any other loads except for the monitor box and speakers, as with all small ups. I have tested it with a power outage and it works well. After 2 months, the box does not smell at all. In the area where I live, the network voltage ranges from 233-253 volts. After 249 volts, the AVR activates and provides around 220 volts. It works very well so far. After 5 months, there is no smell in the box and it works well. After 2 years, everything is perfect, no problems. So far, 22-11-22 dog. It's worth the money.

I got it for my TV, soundbar, PC, 2 external hard drives, and a multifunction printer. I have connected it to the PC via USB and with the ViewPower software, I can have complete control. It can give a shutdown command to the PC after the minutes you set, and you can even operate it remotely! It can also send you an email as soon as there is a power outage or an error. It is small and the load with all the above does not exceed 40%! It is an ideal choice at €84.90!
Once I test its autonomy, I will come back.
P.S. At first, it may have a strong new smell. I spoke to support and they told me it is the varnish of the transformer slowly burning off and it will go away over time.

When I started the process of buying a UPS, I heard that the battery needs to be replaced every 2-3 years. I have had this specific UPS for over 6 years, maybe even longer. It is quiet (except for the beep). With a TV of 840W, a PC of 600+W, and 4 external devices connected, it lasted for about 20 minutes.
Today, it started beeping continuously without providing any power. I couldn't find any information on the product page regarding the battery it uses or if it needs to be replaced, nor any references to errors. I simply disassembled it, disconnected the battery for a few minutes, and then it started working again as before.
It has 2 Yuasa NPW45-12 batteries, and only the small screw at the bottom needs to be removed for replacement.