The 5 Best Uninterruptible Power Supplies (UPS) to Buy in 2021

You can protect your PC all you want from malware, viruses, thermal issues, etc. However, there are some things you never see coming your way. Perhaps the most annoying of these is a sudden power outage. Imagine this happens while in the middle of an unsaved project or just when you are about to complete a mission on your favorite game.

That’s not even the worst part of it. During these power outages, the power might go or come back in “surges”, which basically translates to spikes in the current or voltage. If it happens frequently, it can be detrimental to your PC components.

However, there has been a solution to this problem for quite a while now. All of this can have been avoided if you have an Uninterruptible Power Supply (UPS). Not only do they offer you power back up but also protect your electronics from power mishaps such as over/low voltage and power surges.

What Do You Need To Look For?

There are a lot of UPS units out there, specifically built for home-use. Different variations will have different internal working methods, but most of them follow the same rule of thumb. Plug the UPS into the wall, then plug your PC’s power cable and monitor cable into the UPS. The unit has a battery inside, so it is always charging when plugged into the wall. When a power outage occurs, the unit can power the system for a short interval of time.

The first thing to look out for is power delivery.  UPS capacities are typically represented by “volt-amp” or “VA”. It’s not the same thing as the Wattage in your power supply. For example, if you buy a unit with a 1000VA rating, it can only handle 600W of 650W of power output in reality. Don’t worry, most newer systems these days have the Wattage rating as well which makes things much less confusing. Just remember to factor in everything else you have plugged in, like the monitor.

Some of these units even have voltage regulation built-in. This means if your area doesn’t have the greatest power grid, and you experience voltage dips or surges, the transformer built into the UPS can deal with it. These are usually referred to as Line-Interactive units.

1. CyberPower CP1500LCD Intelligent LCD UPS System

Our Pick


  • Sufficient load capacity
  • LCD display
  • 12 protected power outlets
  • Powerpanel software available
  • Extensive warranty


  • Battery life not very consistent

14,431 Reviews

Run Time: 12 min Half-Load and 3 min Full Load | Output: 1500VA/900W | Voltage Regulation: Yes

The CP1500LCD comes with a capacity of 1500va which is the highest capacity in this particular lineup of CyberPower’s Intelligent LCD UPS systems. This line-interactive UPS system weighs 25lbs with a solid design that is best placed on a stable surface or floor. Out of the 12 available power outlets on this UPS the battery backup functionality is only available in 6. However, all the outlets have a suppression rate of 1500 joules that effectively protects connected devices from power surges. Additionally, with data line protection you will not have to worry about power surges traveling through coaxial, telephone, and Ethernet cables. The battery backup will be able to run for 12 minutes on half load or 3 minutes on full load which should give you enough time to properly shut down your machines and saves any work in progress.

Automatic Voltage Regulation (AVR), is a great feature that corrects any fluctuation in your AC power without having to switch to the UPS’s battery power. As a result, you are guaranteed clean and consistent AC power and prolonged battery life. The LCD panel is another invaluable feature from where you can observe the battery percentage, estimate runtime, and also the current load meaning that the power will not run out for you unexpectedly, therefore defeating its whole purpose. This is further enhanced by audible alarms to notify you when power is almost running out and in case the UPS is faulty.

Many devices will totally impress you on paper only for you to get disappointed after purchasing them. However, I can confidently say that the Cyberpower CP1500 is a UPS that truly lives up to its hype.

2. APC 1350VA Sinewave UPS Battery Backup & Surge Protector

Best For Workstations


  • Trusted brand name
  • Angled LCD display
  • Alarm system
  • PowerChute software


  • An internal high pitch sound

1,514 Reviews

Run Time: 12 min Half-Load and 3.5 min Full Load | Output: 1350VA/810W | Voltage Regulation: Yes


APC is a long-standing name in the manufacture of Uninterruptible Power Sources. Their products never disappoint and their 1350VA UPS is a testimony to that. With a maximum load of 900W, the BR1350MS is the perfect UPS for home and small office electronics. The fact that it is a sinewave UPS means it will efficiently power high-end electronics like gaming consoles allowing you to save your game progress before shutting down your devices in the proper manner. It also features an LCD that is deliberately angled so that you have a better view. From this, you can monitor the battery progress and other power conditions. Automatic Voltage Regulation immediately stabilizes the voltage in instances where it fluctuates beyond the normal level.

The APC 1350VA comes equipped with an alarm system to notify you when there are any faults and a dedicated button to switch it off. By connecting the UPS system with the supplied USB you will be able to use the PowerChute software that gives you access to more functionalities like changing the sensitivity settings or disabling the alarm at specific hours.

From the inclusion of a software program to the inclusion of an LCD, this UPS by APC does not run out of ways to make it the perfect choice as a power backup. And apart from the usual electrical outlets, you can also use the USB ports to charge any USB-compatible device.

3. Tripp Lite 1000VA Smart-UPS

Fully Featured


  • Rotatable LCD screen
  • Impressive battery life
  • User-replaceable batteries
  • Free management software


  • Fan is always running

1,973 Reviews

Run Time: 11.8 min Half-Load and 4.4 min Full Load | Output: 1000VA/500W | Voltage Regulation: Yes


This is another UPS that is steadily gaining acceptance as an Uninterruptible Power Source. On the front side, there is a rotatable LCD screen for easy viewing regardless of its positioning. This will allow us to effectively track the battery capacity and other power conditions. The battery life is quite impressive with the ability to support standard PCs for up to one hour and a single VCR/DVR for more than 3 hours after a blackout. AVR ensures that the battery is conserved for use only in critical blackouts by regulating overvoltage and brownouts instead of switching to battery power. The two batteries that come with the UPS can easily be replaced by the user in case they wear out. But considering the generous 3 years warranty on this UPS, I can assure you it will be a long time before this need arises. To top it off you get a $250,000-lifetime insurance for any connected device.

The Tripp Lite 1000VA comes with eight electrical outlets four of which only offer surge protection while the remaining four offer both surge and UPS power back up. Another highlight feature is the free management software that gives you added functionalities from the UPS like automatic file saving and shut down. But even without the software, you will still be able to perform these functions by connecting the UPS to your PC and utilizing the computer’s built-in power management options. This UPS system complies with the RoHS (Restriction of Hazardous Substances) Policy meaning that it’s absolutely safe to use. This also translates to more energy-saving, less heat and carbon footprint, and ultimately lower operating costs.

Tripp Lite is an established name with a proven record for producing quality products and you can, therefore, trust their 1000VA UPS to cater to your emergency power needs without any qualms. You will also find its adaptability as both a tower or rackmount UPS as really convenient in choosing the appropriate location.

4. APC 600VA UPS Battery Backup & Surge Protector

Budget Pick


  • Relatively cheap
  • Data Line protection
  • Automatic battery test
  • Extensive warranty


  • Insufficient output for high-end PCs

28,315 Reviews

Run Time: 11 min Half-Load and 3.5 min Full Load | Output: 600VA/330W | Voltage Regulation: None

If you are looking for something that’s relatively inexpensive but will still be able to protect your equipment from power surges while still acting as a reliable battery back up then the APC UPS 600VA is your best bet. Labeled at 330W power output this UPS should be able to comfortably power the connected devices long enough for you to properly shut them down. It promises about 4 minutes of run time when drawing full load and about 10 minutes on half load. This UPS system comes with 7 power outlets five of which have battery backup functionality. Like all other battery backups by APC, this UPS includes data line protection for power surges that may occur through the Ethernet. It’s also compatible with the PowerChute software that gives you more options to manipulate the UPS.

The APC UPS 600VA is powered by a maintenance-free lead-acid battery that you can easily replace in case it becomes non-functional instead of disposing of the whole system. The automatic battery self-test feature ensures you easily notice when the battery is wearing out. Nevertheless, APC has so much faith in its product’s life that they give you a 3-year guarantee and in case your equipment gets destroyed by a power surge while using this UPS system you are covered by the $75,000 connected equipment policy.

This UPS might not have the biggest power load but it will really come in handy. With 5 backup power outlets, you have enough room for all the essential equipment like the computer, wireless router to maintain an internet connection, or gaming console in case you want to save your game progress.

5. CyberPower CP685AVRG AVR UPS System

Portable Power


  • Relatively cheap
  • Automatic battery test
  • Extensive warranty


  • Not very effective surge protection

923 Reviews

Run Time: 11 min Half-Load and 2 min Full Load | Output: 685VA/390W | Voltage Regulation: Yes

It should not come as a surprise that there is yet another CyberPower UPS  system on our list. It’s because you can never go wrong with this brand. The CP685AVRG comes with a maximum load of 390W which is the main distinguishing factor from the CP1500LCD we reviewed above that packs. Well, that and the unique architectural design that allows this UPS to stand both horizontally and vertically. But the small power capacity also means that it’s significantly less priced making it the best fit for you if you are operating on a small budget.

Other features of the CP685AVRG include AVR to correct minor voltage fluctuations, Data Line Protection to prevent power surges that travel through the Ethernet, telephone, and coaxial lines, and a PowerPanel Management software to enhance the usability of the UPS system.

Since this is just a small UPS system there is a limit to what you can expect from it. As a power backup for a lamp or wireless router, you can be assured it will serve you for a long. However, for more powerful equipment like the TV or console, you will only have enough time to properly shut them. All in all, it provides an excellent alternative if you have limited funds but still want to keep your equipment safe.

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Bill Wilson
Bill is a certified Microsoft Professional providing assistance to over 500 remotely connected employees and managing Windows 2008 to 2016 servers.