7 Best 2U UPS Battery Backups, Compared
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Finding the best 2U uninterruptible power supplies requires careful attention to physical dimensions and electrical ratings. We compared 7 models based strictly on their published specifications. The Tripp Lite 1500VA 2U Rackmount UPS leads this list because it offers 1500VA capacity in a compact 3.5-inch height. This balance of power and size makes it ideal for standard server racks. You need to match the unit’s VA rating and waveform type to your equipment’s needs. This guide helps you decide which UPS fits your rack space and power requirements.
Quick picks
The best fit for you
- You need solid protection for standard server racks Tripp Lite 1500VA 2U Rackmount UPS This unit offers 1500VA capacity with AVR for reliable voltage regulation.
- You require critical infrastructure with double-conversion protection Tripp Lite 2200VA Online Double-Conversion UPS It provides 2200VA online double-conversion topology for precise power management.
- You have tight racks with active PFC gear CyberPower 1500VA 2U Short-Depth UPS This short-depth model delivers pure sine wave output for sensitive equipment.
- You need 1000W backup with remote management Eaton 5PX G2 1000VA 1000W 2U UPS The Eaton unit supports 1000W capacity and includes remote management features.
Our 7 picks
Tripp Lite 1500VA 2U Rackmount UPS
Best for: 2U rack servers needing 1500VA backup
- Form Factor
- 2U (what this guide is about)
- Apparent Power
- 1500VA
- Output Wattage
- 900W
- Total Outlets
- 8
- Voltage Regulation
- AVR
- Display Type
- LCD Display
View on Amazon: Tripp Lite 1500VA 2U Rackmount UPS Affiliate link
This Tripp Lite unit is a 2U rackmount UPS designed for server racks. It provides 1500VA apparent power and 900W of output wattage. You get eight outlets for your equipment. The device includes automatic voltage regulation to stabilize power. An LCD display lets you monitor status. It fits standard 19-inch racks with a height of 3.5 inches.
Pros
- 1500VA apparent power capacity
- 900W output wattage
- 8 power outlets
- Automatic voltage regulation
- LCD status display
Cons
- 900W output is lower than 1800W competitors
- No smart app connectivity listed
- 29.3 pounds weight adds rack load
Good fit if
- You need a 2U rackmount form factor
- You require 1500VA capacity for critical gear
- You want automatic voltage regulation
Skip if
- You need more than 900W of output
- You require smart remote monitoring features
- You prefer a tower-only configuration
Verdict: Tripp Lite 2U 1500VA Rack UPS offers solid 1500VA protection for standard server racks. It suits users who prioritize physical size and basic voltage regulation over smart connectivity or higher wattage.
Tripp Lite 2200VA Online Double-Conversion UPS
Best for: Critical 2U rackmount infrastructure
- Form Factor
- 2U (what this guide is about)
- Apparent Power
- 2200VA
- Output Wattage
- 1800W
- Output Waveform
- Pure Sine Wave
- UPS Topology
- Online Double-Conversion
- Total Outlets
- 7
View on Amazon: Tripp Lite 2200VA Online Double-Conversion UPS Affiliate link
This Tripp Lite unit delivers 2200VA and 1800W of pure sine wave power in a 2U rackmount form factor. Its online double-conversion topology ensures continuous, clean power for sensitive gear. You get seven managed outlets, including split load banks for shedding non-critical loads. The front LCD provides detailed site data, and user-replaceable batteries simplify maintenance. It suits data centers needing high reliability and remote management via optional network cards.
Pros
- Online double-conversion topology for zero-transfer switching
- Pure sine wave output for sensitive electronics
- Split load banks allow critical load shedding
- User-replaceable hot-swappable batteries
- Rotating front LCD interface
Cons
- Heavier build at 48.5 pounds
- Network card sold separately
- Extended battery modules sold separately
Good fit if
- You need online double-conversion protection
- You require pure sine wave output
- You want to shed non-critical loads
Skip if
- You need a 1U rackmount unit
- You require a lower wattage capacity
- You prefer a tower-only design
Verdict: Tripp Lite 2200VA 2U Online UPS provides robust online double-conversion protection with split load banks for data centers needing precise power management and easy battery maintenance.
CyberPower 2200VA Online Sinewave 2U UPS
Best for: high-capacity server and network protection
- Form Factor
- 2U (what this guide is about)
- Apparent Power
- 2200VA
- Output Wattage
- 1800W
- Output Waveform
- Sine Wave
- UPS Topology
- Double-Conversion
- Total Outlets
- 7
View on Amazon: CyberPower 2200VA Online Sinewave 2U UPS Affiliate link
This 2U rackmount UPS provides 2200VA apparent power and 1800W continuous output. It uses an online double-conversion topology with a pure sine wave output. The unit includes seven outlets and features fast-charge technology. You can extend runtime with optional battery modules. The LCD panel is extendable for remote monitoring. It suits users needing high-capacity, clean power for critical server infrastructure.
Pros
- Online topology for continuous power conditioning
- Pure sine wave output for sensitive electronics
- 1800W continuous output capacity
- Extendable LCD panel for remote viewing
- Fast-charge technology for rapid battery recovery
Cons
- Heavier build at 68.2 pounds
- Limited to seven total outlets
- Requires optional card for SNMP remote monitoring
Good fit if
- You need pure sine wave power for servers
- You require online double-conversion protection
- You want to extend runtime with battery modules
Skip if
- You need more than seven outlets
- You prefer a lighter unit under 50 pounds
- You want built-in SNMP network monitoring
Verdict: CyberPower 2200VA Online 2U UPS delivers robust online protection with extendable runtime options. It fits data centers requiring high wattage and pure sine wave output for critical network gear.
UPC Replacement Battery for Tripp Lite 2U UPS
Best for: replacing batteries in Tripp Lite 2U UPS units
- Form Factor
- 2U (what this guide is about)
- Battery Chemistry
- Sealed lead-acid
- Dimensions
- 8.38 × 12 × 2.75 inches
- Weight
- 22.8 pounds
View on Amazon: UPC Replacement Battery for Tripp Lite 2U UPS Affiliate link
This is a maintenance-free sealed lead-acid replacement battery for Tripp Lite 2U rackmount UPS units. It measures 12 by 8.38 by 2.75 inches and weighs 22.8 pounds. The unit arrives pre-charged and ready for immediate use. It supports hot-swappable installation, allowing you to replace the battery without powering down the system. It includes all necessary connectors and cables.
Pros
- Pre-charged for immediate use upon installation
- Hot-swappable compatible for simplified maintenance
- Includes all required connectors and cables
- 18-month warranty included
Cons
- Heavy at 22.8 pounds
- No app or remote control for monitoring
- Limited to 18-month warranty coverage
Good fit if
- You need a direct replacement for a Tripp Lite 2U UPS
- You want a plug-and-play battery with no assembly required
- You require hot-swappable capability for uninterrupted operation
Skip if
- You need a full UPS unit rather than just a battery
- You require smart monitoring features via an app
- You are looking for a longer warranty period than 18 months
Verdict: UPC Replacement Battery for Tripp Lite 2U UPS is a straightforward, heavy-duty battery replacement for users who need to maintain their existing Tripp Lite rackmount UPS systems without downtime.
CyberPower 1500VA 2U Short-Depth UPS
Best for: Tight racks with active PFC gear
- Form Factor
- 2U (what this guide is about)
- Apparent Power
- 1500VA
- Output Wattage
- 1000W
- Output Waveform
- Sine Wave
- Total Outlets
- 8
- Input Plug Type
- NEMA 5-15P
View on Amazon: CyberPower 1500VA 2U Short-Depth UPS Affiliate link
This 2U rackmount UPS delivers 1500VA and 1000W of power with a pure sine wave output. Its short depth of 10.5 inches fits tight server racks. The color LCD panel shows real-time power data. Automatic voltage regulation protects against minor fluctuations. It includes eight NEMA 5-15R outlets for your connected gear.
Pros
- Pure sine wave output for sensitive electronics
- Compact 10.5-inch depth for short racks
- Color LCD panel for detailed status
- Eight NEMA 5-15R outlets
Cons
- Lower wattage than 2200VA competitors
- No built-in network management port
- 1000W output limits heavy loads
Good fit if
- You need pure sine wave for active PFC supplies
- You have limited rack depth
- You want a color LCD display
Skip if
- You need more than 1000W of power
- You require remote network management
- You need a larger capacity unit
Verdict: CyberPower 1500VA 2U Rackmount UPS suits users with tight rack spaces who need clean power for active PFC equipment. It is not ideal if you require higher wattage or network management features.
Eaton 5PX G2 1000VA 1000W 2U UPS
Best for: 1000W rack-mounted equipment with remote needs
- Form Factor
- 2U (what this guide is about)
- Apparent Power
- 1000VA
- Output Wattage
- 1000W
- UPS Topology
- Line-Interactive
- Total Outlets
- 8
- Dimensions
- 17.6 × 17.2 × 3.4 inches
View on Amazon: Eaton 5PX G2 1000VA 1000W 2U UPS Affiliate link
The Eaton 5PX G2 is a 2U line-interactive UPS with 1000VA apparent power and 1000W output. It features eight NEMA 5-15R outlets and includes a Gigabit network card for remote management. This unit is ENERGY STAR 2.0 certified. It suits users needing reliable backup for moderate loads in a rack-mounted setup.
Pros
- 1000W output capacity
- 8 NEMA 5-15R outlets
- Includes Gigabit network card
- ENERGY STAR 2.0 certified
Cons
- 1000W limit is lower than higher-capacity peers
- Line-interactive topology lacks double-conversion
- 44.5 pounds is heavy for 2U form factor
Good fit if
- You need 1000W of backup power
- You require remote management via network card
- You prefer ENERGY STAR certified efficiency
Skip if
- You need more than 1000W capacity
- You require online double-conversion topology
- You want a lighter unit under 40 pounds
Verdict: Eaton 5PX G2 1000W 2U UPS fits users who need 1000W backup with remote management. It is a solid choice for rack-mounted equipment that does not require double-conversion protection.
2U Rack/Tower 1000VA Sine Wave UPS
Best for: Small rack server protection
- Form Factor
- 2U (what this guide is about)
- Apparent Power
- 1000VA
- Output Wattage
- 700W
- Output Waveform
- True Sine Wave
- UPS Topology
- Line-Interactive
- Total Outlets
- 8
View on Amazon: 2U Rack/Tower 1000VA Sine Wave UPS Affiliate link
The 0E-RCKMT1000 is a 2U rackmount UPS with 1000VA apparent power and 700W output. It uses line-interactive topology with automatic voltage regulation and true sine wave output. You get eight battery backup and surge outlets. The unit offers a 4ms transfer time and fits standard 19-inch racks. It weighs 4.41 pounds and includes USB, serial, and emergency power off ports for integration.
Pros
- 1000VA capacity with 700W output
- True sine wave output for sensitive electronics
- Eight battery backup and surge outlets
- Line-interactive topology with AVR
- 2U rackmount form factor
Cons
- Lower wattage than online double-conversion models
- Shorter runtime at full load compared to higher-capacity units
- 4ms transfer time may not suit all sensitive gear
Good fit if
- You need a 2U rackmount solution for servers
- You require true sine wave output for network hardware
- You want AVR to correct voltage fluctuations
Skip if
- You need online double-conversion for critical loads
- You require more than 700W of output power
- You need smart app monitoring capabilities
Verdict: The 0E-RCKMT1000 2U Line-Interactive UPS fits small rack setups needing basic protection for servers and network gear. It suits users who prioritize outlet count and AVR over online double-conversion topology.
Specifications side by side
| Spec | Tripp Lite 1500VA 2U Rackmount UPS | Tripp Lite 2200VA Online Double-Conversion UPS | CyberPower 2200VA Online Sinewave 2U UPS | UPC Replacement Battery for Tripp Lite 2U UPS | CyberPower 1500VA 2U Short-Depth UPS | Eaton 5PX G2 1000VA 1000W 2U UPS | 2U Rack/Tower 1000VA Sine Wave UPS |
|---|---|---|---|---|---|---|---|
| Apparent Power | 1500VA | 2200VA | 2200VA | not stated | 1500VA | 1000VA | 1000VA |
| Output Wattage | 900W | 1800W | 1800W | not stated | 1000W | 1000W | 700W |
| Output Waveform | not stated | Pure Sine Wave | Sine Wave | not stated | Sine Wave | not stated | True Sine Wave |
| UPS Topology | not stated | Online Double-Conversion | Double-Conversion | not stated | not stated | Line-Interactive | Line-Interactive |
| Total Outlets | 8 | 7 | 7 | not stated | 8 | 8 | 8 |
| Battery Chemistry | not stated | not stated | not stated | Sealed lead-acid | not stated | not stated | not stated |
| Form Factor | 2U Rackmount | 2U Rackmount | 2U Rack/Tower | not stated | 2U Rackmount | 2U Rack/Tower | 2U Rackmount |
| Input Plug Type | not stated | not stated | NEMA 5-20P | not stated | NEMA 5-15P | not stated | not stated |
| Waveform | not stated | Pure Sine Wave | not stated | not stated | Pure Sine Wave | not stated | not stated |
| Voltage Regulation | AVR | not stated | not stated | not stated | AVR | not stated | not stated |
| Topology | not stated | Online | Online | not stated | not stated | Line Interactive | Line Interactive |
| Size | not stated | 2200VA / 2U | 2200VA | Medium | 1500VA | 3.4" x 17.2" x 17.6" | not stated |
| Display Type | LCD Display | LCD Display | not stated | not stated | not stated | not stated | not stated |
| Dimensions | 10.5 × 17.3 × 3.5 inches | 24 × 20 × 9.5 inches | 23.6 × 17 × 3.5 inches | 8.38 × 12 × 2.75 inches | 10.5 × 17 × 3.4 inches | 17.6 × 17.2 × 3.4 inches | 15.3 × 17 × 3.5 inches |
| Weight | 29.3 pounds | 48.5 pounds | 68.2 pounds | 22.8 pounds | 26.8 pounds | 44.5 pounds | 4.41 pounds |
| Color | Black | Black | Black | Black | Black | Black | Black |
| Model | SMX1500LCD | SU2200RTXLCD2U | OL2200RTXL2U | RBC94-2U-UPC | CP1500PFCRM2U | 5PX1000RTNG2 | 0E-RCKMT1000 |
How to Choose the Right 2U UPS
-
Check the VA Rating
You must match the Volt-Ampere rating to your total load. The Tripp Lite 1500VA model suits standard racks needing moderate backup. If you run high-capacity server gear, the CyberPower 2200VA unit provides more headroom. Always calculate the sum of all connected device wattages. Select a UPS with a VA rating that exceeds your total load to ensure safe operation during outages.
-
Select the Topology
Choose between line-interactive and online double-conversion topologies. The Eaton 5PX G2 uses line-interactive protection, which is sufficient for many rack-mounted devices. For critical infrastructure, the Tripp Lite 2200VA offers online double-conversion for precise power management. Online units provide cleaner power by constantly converting electricity. Pick online topology only if your equipment requires absolute voltage stability.
-
Verify Waveform Output
Active PFC power supplies need a pure sine wave output. The CyberPower 1500VA model delivers this waveform for sensitive network gear. Standard modified sine waves may cause issues with modern server power supplies. Check your equipment specifications to confirm waveform requirements. If you have active PFC units, ensure your chosen 2U UPS explicitly lists pure sine wave output to prevent compatibility errors.
-
Measure Rack Depth
Physical dimensions determine if the unit fits your rack. The CyberPower 1500VA has a short depth of 10.5 inches, ideal for tight spaces. The Tripp Lite 2200VA is much larger at 24 inches long. Measure your available rack space before purchasing. Ensure the UPS length does not obstruct airflow or cable management. Proper fitment prevents installation failures and maintains proper cooling for all rack components.
-
Review Display Features
An LCD display provides real-time status information. The Tripp Lite 1500VA and 2200VA models both include LCD screens. These displays show input voltage, load levels, and battery status. Units without displays require external monitoring tools. If you prefer immediate visual feedback on power conditions, select a model with an integrated LCD. This feature helps you quickly assess the UPS state during maintenance or outages.
Frequently asked questions
Which 2U UPS provides online double-conversion protection?
The Tripp Lite 2200VA Online Double-Conversion UPS and the CyberPower 2200VA Online Sinewave 2U UPS both offer this topology. This design continuously converts power, ensuring zero transfer time during outages. It suits critical infrastructure where even a millisecond of interruption is unacceptable for sensitive network gear or servers.
What is the lightest 2U rack UPS on this list?
The 2U Rack/Tower 1000VA Sine Wave UPS is the lightest option at 4.41 pounds. Most other models weigh significantly more due to larger batteries and transformers. For example, the Tripp Lite 1500VA weighs 29.3 pounds, and the CyberPower 2200VA Online Sinewave reaches 68.2 pounds.
Which UPS is best for tight rack spaces?
The CyberPower 1500VA 2U Short-Depth UPS is ideal for tight racks. It measures only 10.5 inches in length, matching the compact footprint of the Tripp Lite 1500VA. This allows you to fit the unit into shallow rack enclosures while still providing pure sine wave output for active PFC equipment.
Does the Tripp Lite 1500VA have an LCD display?
Yes, the Tripp Lite 1500VA 2U Rackmount UPS includes an LCD display. This allows you to monitor real-time status, battery runtime, and load levels directly on the unit. Other models like the CyberPower 2200VA Online Sinewave also feature displays, providing clear visibility into power conditions.
Can I replace the battery in a Tripp Lite 2U UPS?
Yes, the UPC Replacement Battery for Tripp Lite 2U UPS is designed for this purpose. It is a heavy-duty replacement unit that fits standard Tripp Lite rackmount systems. This allows you to maintain your existing UPS without replacing the entire unit, ensuring continuous protection for your server infrastructure.
Which UPS offers 1000W of backup power?
The Eaton 5PX G2 1000VA 1000W 2U UPS provides 1000W of output capacity. It uses a line-interactive topology, which is suitable for rack-mounted equipment that does not require double-conversion protection. This model also supports remote management, making it a practical choice for distributed server environments.