Whether you’re running a small home office or a gaming powerhouse, your computer is likely your most important tool for work and play. But there’s one component that sometimes gets overlooked: the uninterruptible power supply, or UPS.
UPSs are responsible for protecting the rest of your hardware when the power goes out, but they’re also worth considering if you’re worried about a power surge or brownout damaging your computer.
Read on for our best computer UPS units.
Our Editor’s Best Computer Uninterruptible Power Supply Units Reviews
- 600VA / 330W RELIABLE BACKUP POWER: Supplies short‑term battery power during outages to maintain internet connectivity and allow safe shutdown of computer and other devices during power interruptions.
- STAY CONNECTED WHEN IT MATTERS MOST: Delivers up to 23 minutes of runtime when powering a 100W load. Mid-Size battery backup for computers, Wi‑Fi routers, modems, external drives, NAS, and Smart-Home IoT devices
- POWER & CHARGE ALL YOUR ESSENTIAL DEVICES: 7 well‑spaced outlets (5 battery backup + surge protection, 2 surge‑only), plus a USB‑A charging port (1.5A), provide reliable protection and fast charging for multiple devices
- INSTANT UPS STATUS & EASY BATTERY REPLACEMENT: Clear indicators and mutable audible alerts give quick UPS status updates. The battery is User‑replaceable with genuine APC replacement battery Model APCRBC154 (sold separately)
- ENHANCED PROTECTION FOR CONNECTED ELECTRONICS: Supported by a 3‑Year Warranty and $75,000 Equipment Protection, offering enhanced coverage for connected devices and added assurance against power‑related damage
- 1500VA / 900W RELIABLE BACKUP POWER: The highest VA capacity available for home use; delivers short‑term battery power to keep essential devices powered during blackouts, surges, and unexpected power interruptions
- STAY CONNECTED WHEN IT MATTERS MOST: Provides up to 19 minutes of backup runtime at a 300W load—keeping computers, TVs, DVRs, Wi-Fi routers, modems, external drives, NAS systems, and smart home devices powered during outages
- TEN PROTECTED OUTLETS: Power your entire setup with 5 battery backup outlets for essential devices, plus 5 surge-only outlets for peripherals—plus built-in coaxial and Ethernet surge protection for added peace of mind
- AUTOMATIC VOLTAGE REGULATION (AVR): Corrects low voltage brownouts (88V+) and surges (+/-13%) without draining battery—boosts or trims to stable 120V. Extends runtime for blackouts; Active PFC compatible for gaming PCs
- REPLACEABLE BATTERY & ENERGY STAR UPS: User-replaceable battery (APCRBC124, sold separately) for zero-downtime swaps. ENERGY STAR certified for 92%+ efficiency, cutting energy costs vs standard UPS units
- COMPUTER UNINTERRUPTIBLE POWER SUPPLY UNITS: 900W battery backup with 10 outlets guard your devices against power surges and black outs. Six-foot extension cord (NEMA 5-15P) connects to standard outlets. Features 650 joules of surge protection.
- RELIABLE PROTECTION: 10 outlets provide UPS battery backup & surge protection to protect servers, computers & peripherals. Perfect for computer desktop PC, gaming console, workstation, small server, network devices, wireless router and more.
- AUTOMATIC VOLTAGE REGULATION: AVR corrects brownouts & over voltages between 92V and 150V back to safe standard 120V without using battery power. Also features 100 Mbps Ethernet RJ45 port protection and Telephone/DSL RJ11 port dataline protection.
- ADVANCED POWER FEATURES: Internal batteries are easily user replaceable with Tripp Lite's RBC51 battery cartridge. LCD screen displays power information including battery runtime, wattage load, overload, AVR, input voltage, and battery statuses.
- FULLY SUPPORTED: Protected by a 3-Year Limited Manufacturer's Warranty and a $250,000 Ultimate Connected Equipment insurance. To best support your purchase, Eaton's expert technical team is available via phone, web, or email to address any concerns.
- COMPUTER UNINTERRUPTIBLE POWER SUPPLY UNITS: 810W battery backup with 10 outlets guard your devices against power surges and black outs. Six-foot extension cord (NEMA 5-15P) connects to standard outlets. Features 650 joules of surge protection.
- RELIABLE PROTECTION: 10 outlets provide UPS battery backup & surge protection to protect servers, computers & peripherals. Perfect for computer desktop PC, gaming console, workstation, small server, network devices, wireless router and more.
- AUTOMATIC VOLTAGE REGULATION: AVR corrects brownouts & over voltages between 92V and 150V back to safe standard 120V without using battery power. Also features 100 Mbps Ethernet RJ45 port protection and Telephone/DSL RJ11 port dataline protection.
- ADVANCED POWER FEATURES: Internal batteries are easily user replaceable with Tripp Lite's RBC51 battery cartridge. LCD screen displays power information including battery runtime, wattage load, overload, AVR, input voltage, and battery statuses.
- FULLY SUPPORTED: Protected by a 3-Year Limited Manufacturer's Warranty and a $250,000 Ultimate Connected Equipment insurance. To best support your purchase, Eaton's expert technical team is available via phone, web, or email to address any concerns.
- UPS BATTERY BACKUP & SURGE PROTECTOR: 750VA / 450W UPS provides 12-outlets total. Six outlets provide both battery backup and surge protection, and six outlets provide only surge protection. Features 316 joules of surge protection.
- EXTEND RUNTIME: Provides time to save files or shutdown equipment during longer outages. Runtime varies on wattage load and environment. A 100W TV is supported for 22 minutes, a 200W office PC for 10 minutes, or a 400W gaming PC for 2.7 minutes.
- ADVANCED POWER FEATURES: UPS filters out disruptive EMI/ RFI disturbances that can cause hardware damage. LED lights indicate protection status, overloads, and low/replace battery alert. Resettable circuit breaker protects equipment.
- USER-FRIENDLY: Provides 5ft power cord & bottom keyhole tabs that make the battery backup under-desk and wall mountable. Internal battery is easily user replaceable. Remains silent during normal operation, only alarming you of low battery or faults.
- FULLY SUPPORTED: Protected by a 3-Year Limited Manufacturer's Warranty and a $100,000 Ultimate Connected Equipment insurance. To best support your purchase, Eaton's expert technical team is available via phone, web, or email to address any concerns
- ★Protect your work and life:Protect desktop computers,workstations,networking devices,and home entertainment devices(e.g.Modem&Router,Smartphone,PC Desktop Computer,Network-attached Storage).
- ★AVR and Sockets:Automatic Voltage Regulation protects connected devices by stabilizing incoming voltage levels.6 Outlets provide battery backup and surge protection(Battery is charged),2 outlets provide surge protection only(Mains electricity is connected).
- ★Multi-functional intelligent LCD:Displays real-time detailed information about battery and power condition,including input voltage,output voltage,battery capacity,load capacity,etc.And can automatically extinguish the screen(Boot 30 seconds,in the state of power automatically extinguish the screen;Touch the switch and the backlight will turn on automatically).
- ★Eliminate noise:When the UPS is in battery mode,the beeping sound will be emitted after 6-10 seconds,which means that the UPS is in on-load state.As long as you touch the on key lightly to turn off the sound,the display screen will display silent state.When the battery is about to run out,the UPS will continuously emit the beeping alarm until the power off.
- ★Free management software:The software can realize unattended system shutdown and power management.With Cooling fan,high power cooling requirements are solved.
- UPS BATTERY BACKUP & SURGE PROTECTOR: 550VA / 300W UPS provides 10-outlets total. Five outlets provide both battery backup and surge protection, and five outlets provide only surge protection. Features 316 joules of surge protection.
- EXTEND RUNTIME: Provides enough time to save files or shutdown equipment during longer outages. Runtime varies on wattage load and environment. A 20W wifi router is supported for 67 minutes, a 100W TV for 9.2 minutes, or a 200W PC for 2.9 minutes.
- ADVANCED POWER FEATURES: UPS filters out disruptive EMI/ RFI disturbances that can cause hardware damage. LED lights indicate protection status, overloads, and low/replace battery alert. Resettable circuit breaker protects equipment.
- USER-FRIENDLY: Provides 5ft power cord & bottom keyhole tabs that make the battery backup under-desk and wall mountable. Internal battery is easily user replaceable. Remains silent during normal operation, only alarming you of low battery or faults.
- FULLY SUPPORTED: Protected by a 3-Year Limited Manufacturer's Warranty and a $100,000 Ultimate Connected Equipment insurance. To best support your purchase, Eaton's expert technical team is available via phone, web, or email to address any concerns
- 1500VA/900W Protect your work - life balance by safeguarding desktop computers, workstations, networking hardware, along with home entertainment devices such as modems, routers, smartphones, desktop PCs and network - attached storage.
- AVR and Sockets:Automatic Voltage Regulation protects connected devices by stabilizing incoming voltage levels.6 Outlets provide battery backup and surge protection(Battery is charged)
- Multi - functional LCD: Displays real - time battery and power info like input/output voltage, battery/load capacity. Screen auto - turns off 30 seconds after boot or during power - on; touch switch activates backlight.
- Silence beeps: In battery mode, the UPS beeps 6 - 10 seconds after taking load. A light touch on the on - key mutes the beep, with the screen showing silent status. When the battery is almost empty, it beeps continuously until it shuts down.
- Every HEHSLZZ UPS undergoes over nine rounds of inspections before delivery. We enforce strict testing standards from raw materials procurement, through manufacturing, assembly, safety checks, to packing, warehousing, and shipping. This ensures you receive only top - tier products.
- Standby uninterruptible power supply (UPS) with 400VA / 255W battery backup; ideal for home networks, IoT devices, and home entertainment devices. Runtime varies based on power consumption of connected devices. At half load (200VA/127.5W), the UPS provides approximately 6 minutes of backup power, while at full load (400VA/255W), it provides approximately 1.5 minutes of backup power
- 6 outlets total (NEMA 5-15R), consisting of 3 surge-protected outlets and 3 surge-protected/battery-backup outlets
- Protects electronic devices during a power surge; provides reliable power, keeping devices powered during short outages and powered for long enough to shut down properly during extended outages
- Small compact size integrates easily into any home or office environment; 5-foot cord with NEMA 5-15P right angle and 45-degree offset plug (120V - 50Hz / 60Hz)
- Note: Power management software is available for download in the "Product guides and documents" section of this page
- 850VA / 450W RELIABLE BACKUP POWER: Supplies short‑term battery power during outages to maintain internet connectivity and allow safe shutdown of computer and other devices during power interruptions.
- STAY CONNECTED WHEN IT MATTERS MOST: Delivers up to 20 minutes of runtime when powering a 150W load. Mid-Size battery backup for computers, Wi‑Fi routers, modems, external drives, NAS, and Smart-Home IoT devices
- POWER & CHARGE ALL YOUR ESSENTIAL DEVICES: 9 well‑spaced outlets (6 battery backup + surge protection, 3 surge‑only), plus 2 USB‑A ports (5V/2.4A shared), provide reliable protection and fast charging for multiple devices
- INSTANT UPS STATUS & EASY BATTERY REPLACEMENT: Clear indicators and mutable audible alerts give quick UPS status updates. The battery is User‑replaceable with genuine APC replacement battery Model RBC17 (sold separately)
- ENHANCED PROTECTION FOR CONNECTED ELECTRONICS: Supported by a 3‑Year Warranty and $75,000 Equipment Protection, offering enhanced coverage for connected devices and added assurance against power‑related damage
Best Computer Uninterruptible Power Supply Units Buying Guide
Before choosing the best uninterruptible power supply you should consider following options:
1. Battery types: There are two main kinds of batteries used in UPS systems – lead acid and lithium.
Lithium batteries have a higher energy density, so they can provide longer runtimes. They are also lighter, so a lithium-based UPS is easier to move around.
However, lithium batteries are more expensive, and they don’t last as long as lead-based ones.
Also, lithium batteries need to be replaced every three to five years, whereas lead-based systems can last for up to 10 years.
2. Battery capacity: The battery capacity of a UPS is measured in volts/ampere hours (VAh). The higher the VAh rating, the longer the runtime.
3. On-battery runtime: This tells you how long the UPS can continue supplying power on its own batteries before the generator kicks in.
The longer the runtime, the more time you have to switch off your computer and switch on the backup system.
You can also reduce downtime by keeping your computer running on battery, while simultaneously switching on the backup system to supply power.
4. UPS rating: This tells you how much power the UPS can supply. Most UPSes have a rating between 750VA and 10,000VA. The higher the rating, the more computers the UPS can supply with power.
5. Line-interruption rate (LIR): This tells you how frequently the UPS can be interrupted before the battery is fully drained. The lower the LIR, the better.
6. Response time: This tells you the time taken for the UPS to switch from on-battery to on-grid and vice versa. The shorter the response time, the better.
7. Number of outlets: This tells you how many devices the UPS can supply with power at a single point in time. The higher the number, the better.
8. Warranty: This tells you the period for which the UPS manufacturer guarantees free replacement of the unit in case of defects.
What else you should know about computer uninterruptible power supply units
1. What is a UPS?
A UPS is a device that provides emergency power to a load when the input power source fails. A UPS differs from a generator in that it will provide near-instantaneous power by supplying energy stored in batteries, flywheels, or supercapacitors.
2. What are the benefits of using a UPS?
Some benefits of using a UPS include:
-providing backup power in case of a power outage
-protecting against power surges
-allowing you to keep working during a power outage
-preventing data loss in the event of a power outage
3. How does a UPS work?
A UPS is an uninterruptible power supply. It is a device that provides emergency power to a load when the input power source fails. A UPS differs from a standby generator in that it will provide near-instantaneous power to the load when the input power fails.
4. What are the different types of UPS systems?
The different types of UPS systems are standby, line-interactive, and online.
5. How do I choose the right UPS for my needs?
There is no definitive answer to this question as it depends on the specific needs of your business. However, some factors you may want to consider include the size of your business, the type of equipment you are using, your power requirements, and your budget.
Conclusion
On the market, there are numerous best computer uninterruptible power supply units. Hopefully, the list of the top ten best computer uninterruptible power supply units will save you time researching and deciding on the best one for you.