The best UPS systems are the key to an effective IT infrastructure. If the primary power source fails, UPS systems provide a backup power source to keep your IT equipment functional.

The purpose of this is to prevent downtime, which you should avoid at all costs. According to Pingdom, downtime can cost large businesses as much as $16,000 per minute, while small businesses can suffer a loss of $427 per minute. 

In this article, our team has looked at the leading UPS system manufacturers (Vertiv, Eaton, APC, etc.) and listed the best UPS battery backup systems from them on the market. Before we review those, let’s look at key buying considerations for UPS systems.

Key considerations when selecting a UPS system

Before investing in a UPS system for your IT infrastructure, it’s important to understand:

1. The different types of UPS systems
2. Your UPS power requirements
3. Battery backup runtime
4. Outlet requirements
5. UPS form factor

Below is a detailed look into each of these.

1. Different types of UPS systems

Before you go into more detail, first decide on the type of UPS system you need. Generally, there are three types of UPS systems:

1. Standby: Standby UPS systems provide basic protection, are the cheapest to configure, and take the least space. They are best for simple home and office use where power outages are infrequent and brief.
2. Line-interactive: Using a line-interactive UPS, the inverter is always on and part of the output. If the AC input fails, the inverter switches to battery power, which provides voltage regulation and filtering.
3. Online double conversion:  Online double conversion UPS systems continuously convert incoming AC power to DC and then back to AC. The result is a clean, consistent power supply with zero transfer time during outages.

If you’re still not sure which one is the best, CyberPower has a great chart that helps to understand which UPS system solves your problems:

Image via CyberPower

As the chart tells, double conversion UPS systems are the most advanced and offer the most protection for valuable and sensitive computers and electronics.

Line interactive UPS systems offer more cost-effective protection for most IT equipment.

2. UPS power requirements

The UPS system’s output capacity is typically measured in volt-amperes (VA) and defines how much power the unit can supply in battery mode to support connected IT equipment. A UPS must have at least as much power as the connected equipment, or it’ll overload and can’t support the equipment during an outage.

You can estimate the UPS’s power requirements by adding up the wattage of all the devices you intend to connect.

3. Battery backup runtime

Battery backup runtime refers to the time that the UPS system can provide support for connected IT equipment during an outage. Depending on how many devices are connected to the UPS system’s outlets, the runtime varies.

Most large-scale enterprise UPS systems can provide 2-15 minutes of runtime until power is restored or systems are safely shut down.

4. Outlet requirements

If you’re planning to buy a desktop or tower UPS, make sure it has enough outlets to support all your critical devices.

If you’re planning to buy a rack-mount UPS, you’ll most likely connect it to separate power distribution units (PDUs). In this case, you’ll need to make sure the UPS has enough outlets to plug the PDUs in.

5. UPS form factor

The types of UPS systems differ, and so do their form factor.

UPS form factors refer to their position and shape. There are generally three types of form factors available:

1. Desktop UPS: Compact, designed for small office/home use

Desktop UPS example (via Vertiv)

2. Tower UPS: A freestanding, vertical UPS that typically has outlets in the back.

Tower UPS example (via Eaton)

3. Rack-mount UPS: Designed to be mounted inside a standard server rack. It is the best option for most enterprises due to it’s easy integration with existing IT infrastructure.

Rack-mount UPS example (via CyberPower)

The 5 best UPS battery backup systems in 2025

According to our research and the hundreds of customer reviews we went through, the five best UPS systems in 2025 are:

1. Eaton 9PX UPS – Best overall UPS system
2. Vertiv PowerUPS 9000 – Best enterprise UPS system
3. Vertiv Liebert APS – Best scalable UPS system
4. APC Smart-UPS SRT10KXLT – Best for large server rooms
5. CyberPower PR1500LCDRT2U – Best UPS battery backup for small to mid-sized businesses

For a detailed review of each of these, keep on reading!

1. Eaton 9PX UPS – Best overall UPS system

The Eaton 9PX UPS is a double-conversion online UPS that can either be mounted in a server rack or used independently as a tower UPS. It is our choice for the best UPS backup battery system due to its strong reviews from real users, advanced battery management technology, and high efficiency, even at low load levels.

The 9PX UPS model can provide power for up to five minutes at full load or 14 minutes at half load. Eaton 9PX UPS units are equipped with Eaton Gigabit Network Cards, which help IT admins oversee power management.

In this Reddit thread, a few IT managers commented on this model:

• “An Eaton 9PX will survive the apocalypse. If you don’t need a double conversion UPS, the 5PX is fine, too.”

• “I’ve had lots of failures with the APC SmartUPS 3000s, have a handful of CyberPowers just give up the ghost, and one or two Eatons fail. Eaton, for the most part, is the most reliable of the three brands.”

2. Vertiv PowerUPS 9000 – Best enterprise UPS system

Aside from Eaton, Vertiv is another highly popular UPS system provider, and its PowerUPS 9000 is our choice for the best enterprise UPS system. It is designed to support various IT equipment, from high-density applications to traditional computing. This model can achieve up to 97.5% efficiency and 99% efficiency with dynamic online mode.

According to Vertiv, the PowerUPS 9000 is the most efficient UPS of its class, with a physical footprint 32% smaller than previous models.

3. Vertiv Liebert APS – Best scalable UPS system

The Vertiv Liebert APS is the best scalable UPS system for environments like server rooms, network closets, or branch offices. Its modular design allows you to start with a smaller system and add more power or battery modules over time. Each power module is 5kVA/4.5kW.

Compared to Vertiv PowerUPS 9000, the Liebert APS is designed for smaller IT environments.

One Reddit user commented on this model, “We had a Liebert unit in our data center for 18 years without a failure. Although regular maintenance was performed…so to answer your question, Liebert/Vertiv.”

4. APC Smart-UPS SRT10KXLT – Best for large server rooms

If you need a reliable double-conversion online UPS system for protecting high-end network equipment, the APC Smart-UPS SRT10KXLT is a great choice. It is a popular choice among IT administrators, mainly because it is highly reliable and has great built-in quality. It is capable of supporting loads from 1 to 20kVA in a rack/tower configuration. When at full capacity, it can run for up to 3 minutes and 44 seconds.

A few IT administrators commented the following on APC’s UPS systems:

• “Nobody ever got fired for buying APC.”

• “APC has you covered. They use only the finest razor-sharp sheet metal in their 300-pound units.”

5. CyberPower PR1500LCDRT2U – Best UPS system for small to mid-sized businesses

The CyberPower PR1500LCDRT2U is a cost-effective line-interactive UPS system and perhaps the best UPS backup battery for small businesses. It provides battery backup for corporate and departmental servers, storage appliances, network devices, and telecom systems.

CyberPower offers a generous 3-year warranty for their UPS systems, including the batteries. The UPS system can be connected to CyberPower’s cloud management tool for simple remote management. While it can be useful for simple power-level monitoring, it can’t provide the performance monitoring that most enterprises need.

Monitoring your SNMP-enabled UPS systems with Atera

Most UPS systems from companies like Eaton, Vertic, and APC support SNMP, which allows you to track key performance metrics on your UPS systems remotely. To monitor UPS systems via SNMP, you need a third-party SNMP monitoring software, like Atera.

Atera allows users to track SNMP-enabled devices, such as UPS systems, network switches, printers, and other network devices.

You can monitor key performance metrics, such as:

• Input/output voltage
• Battery level and status
• Load percentage
• Runtime remaining
• Temperature

Besides SNMP, you can even monitor generic non-SNMP UPS systems with Atera.

Atera’s AI Copilot assists with this entire process through its AI-powered OID generator, which allows you to create the correct OIDs for your UPS systems quickly.

So, if you’re ready to revolutionize your IT management with Atera’s innovative Agentic AI product, you can get started easily with the 30-day free trial.

You can cancel at any time; no credit card is required!

AI is revolutionizing IT management, unlocking new levels of automation, efficiency, and intelligence. With the evolution from generative AI to agentic AI, AI has rapidly evolved, giving IT teams smarter ways to get more quality work done, faster. Unlike previous models, agentic AI doesn’t just process information; it learns, adapts, and takes independent actions based on real-time data.

With the power of agentic AI, IT teams will be able to introduce even more efficiency and productivity to their organizations. AI-powered automation and intelligence are also set to enhance security and scalability, making it easier for companies to grow and thrive. Today, we’re taking a closer look at the key applications of AI in IT management, including IT support, intelligent automation, proactive security, and resource tracking.

AI-powered IT support

One of the most common AI in ITSM (IT service management) use cases is AI-powered IT support. This means leveraging AI tools to help with ticket resolution and user support, which ultimately leads to faster response times and happier users and customers.

AI-driven IT service desks

Modern ITSM platforms offer AI service desk capabilities, which means that virtual AI assistants can provide real-time IT support and help with issue resolution. Ticketing and help desk services are also reaping the benefits of AI. With functions like ticket creation, categorization, and intelligent routing, these tools yield faster response times.

AI ticketing programs can resolve some issues independently, without human intervention, and can even automate common end-user solutions. But when necessary, they can also elevate the ticket to the appropriate technician – then, the AI companion remains available to help with script writing, command line generation, and more. A real-life example is Atera’s AI Copilot tool, which is transforming IT helpdesk work with 10X faster ticket resolution and 11-13 hours saved every week for technicians.

Predictive incident management

AI tools for IT offer incredible predictive analytics that can help with decision making as well as proactive incident management. These tools analyze historical data to anticipate system failures before they occur. For example, an agentic AI threat detection system can monitor traffic for patterns of suspicious activity, such as unusual network activity or unauthorized login attempts, and flag potential security breaches before they’ve affected the network.

With intelligent monitoring that detects anomalies and prevents disruptions, integrating AI into your IT management toolbox can help you keep your IT environment safe… but we’ll dive deeper into cybersecurity in a little bit.

Intelligent automation for IT operations

While IT automation follows predefined scripts and rules, agentic AI leverages reasoning capabilities to assess a situation, analyze context, and dynamically decide which actions to take. This presents incredible possibilities for enhanced intelligent IT automation…

Self-healing IT systems

Agentic AI tools can autonomously detect performance issues and apply fixes in real time, without the need for human intervention. If human intervention is needed, the AI platform will elevate the request to the appropriate technician. With intelligent automation, your organization will also be able to set up automated system optimizations to prevent downtime and enhance performance.

Automated patch and update management

Every IT pro knows the importance of patch management – and the tedious nature of manually installing patches. When you integrate agentic AI into your IT environment, you can trust AI agents to implement software updates and security patches that minimize vulnerabilities. Plus, these agents can even embrace intelligent scheduling to avoid disruptions during peak hours.

Proactive Cybersecurity with AI

Expert sources like Statista and others have been reporting on the rising rates of data breaches and cybercrime, as you can see from the chart below. When you use agentic AI in ITSM, you can embrace a more proactive cybersecurity posture.

AI-Powered threat detection and response

With continuous network monitoring, AI-powered tools can identify security breaches in real time. These tools will analyze past data to better identify and understand anomalies, making it easy for AI agents to determine when a breach is occurring – and even identify potential weaknesses and implement fixes before a breach happens.

AI tools can now automate threat isolation, mitigation, and prevention strategies. In other words, AI can help ensure that your entire cybersecurity process from start to finish is maximally strong against malevolent actors.

Adaptive endpoint protection

Because agentic AI remembers past actions, learns from data, and refines its approach over time, it is an excellent defense against new and emerging threats. This means that IT tools that are powered by agentic AI actually grow even more effective with continued use.

With adaptive endpoint protection, you can ensure higher-grade security through intelligent access control and anomaly detection for every single device in your network.

For example, an AI-driven endpoint security system can detect an unusual login attempt—such as an “employee”, which may be a bad actor using an employee’s credentials, logging in from a new location, or at an odd hour. Instead of blindly allowing access, the AI can enforce adaptive authentication, requiring additional verification or restricting access until the user’s identity is confirmed.

AI in IT asset and resource management

Much of IT asset and resource management is currently stuck in the past – and many organizations use time-consuming manual methods to track inventory and allocate resources. With AI’s predictive power and optimization abilities, you can embrace the AI digital transformation and bring your IT asset and resource management into the modern age.

Intelligent IT inventory tracking

Agentic AI tools can monitor IT assets, predict hardware and software needs, and optimize resource allocation. These programs can determine if your organization’s investments are being used to their fullest capacities and can recognize when an asset needs to be replaced. Smart automation allows for cost-effective IT procurement and usage.

AI-Driven cost optimization

AI tools for IT can also be used to optimize costs, saving you countless dollars in the long run. These tools identify underutilized resources, redundant software, and unnecessary expenses. Plus, they can provide intelligent recommendations for budget-friendly IT infrastructure management. Although NVIDIA reports that 15% of organizations struggle to adopt AI because of lacking an AI budget (see graphic below), they also report that investing in AI pays off.

The future of AI in IT management

As agentic AI continues to develop, we expect to see AI tools evolving toward fully autonomous IT operations. Of course, it’s crucial to embrace AI in IT while ensuring that you practice responsible and ethical AI usage. Additionally, working to ensure that your IT team has high levels of AI literacy can help you leverage AI while maintaining the necessary oversight.

As the technology behind AI continues to advance, we believe AI will play an ever more prominent role in optimizing IT workflows. It’s crucial to embrace the AI wave in order to maintain a competitive edge in the IT industry and ensure your company’s productivity and efficiency are on par with evolving industry standards.

We also foresee that agentic AI will play a huge role in mitigating security threats and reducing the risk and severity of data breaches that damage trust, reputation, and your bottom line.

That’s why we’ve worked hard to develop an intuitive, easy-to-use AI solution integrated into our existing architecture to bring your cybersecurity defense to the next level. Let’s explore a bit more about the ins and outs of Atera’s AI tools…

Atera’s AI-driven IT solutions

Our AI Copilot tool offers AI ticketing, automation, and predictive analytics. Copilot helps drive ticket resolution with functions like remote session summaries, command-line generation, real-time device troubleshooting, instant ticket summaries, script generation, and knowledge base connection. When appropriate, it elevates issues to a human technician – but many tickets can be resolved without any human intervention. Our users have seen incredible success, as evidenced in our case studies.

For instance, our customer Leeds United, a football club, uses Atera’s all-in-one, AI-powered platform to drive down costs while keeping devices secure. While they were previously relying on manual processes like spreadsheets that caused inefficiencies, they wanted to speed up their workflows and drive a more productive work environment. See below Leeds United complete feedback on Atera’s AI capabilities:

By incorporating Atera’s AI tools, they were able to reduce ticket volume by 35%, freeing up technicians to work on more complex problems.

The Superior Court of California County of San Mateo also leverages Atera to enhance efficiency, reduce ticket resolution times, and boost remote support capabilities. Using Atera has resulted in support calls going from taking 2-3 hours, to being resolved in minutes.

Be an early adopter of agentic AI technologies for your IT management

Are you ready to redefine how you do IT? AI is changing the world of IT management, making it more autonomous, intelligent, and proactive. While agentic AI is still a developing technology, one thing is clear: Organizations that embrace AI-driven IT solutions will gain a competitive edge in efficiency and security. With Atera, you can do just that.

Leverage Atera’s agentic AI solutions to see how efficient your IT department can be. Start your 30-day free trial today, with no credit card required.