APC Smart-UPS Dedicated Replacement Battery Alternatives: 6 Similar Picks Compared

How each alternative compares

Tripp Lite OMNISMART350HG 225W UPS

The Tripp Lite OMNISMART350HG is a complete UPS unit, not just a battery replacement. It weighs 24 pounds and measures 13.8 inches long. This hospital-grade device provides certified safety for medical environments. It differs significantly from the APC RBC55, which is only a component for existing APC units. You get a full power protection system here. However, it lacks the high wattage needed for general computing. It suits medical facilities more than server rooms. The white finish contrasts with the black APC battery. You choose this if you need a standalone medical-grade solution rather than a simple battery swap.

Tripp Lite 1500VA 980W Battery Backup

The Tripp Lite SMART1500 is a heavy-duty 1500VA UPS, weighing 40 pounds. It offers 980W of output power. This is a complete unit, unlike the APC RBC55 battery cartridge. It provides raw wattage and voltage regulation for network hardware. The size is much larger, at 12.8 inches high. You gain significant power capacity but lose the compact nature of a replacement battery. It is ideal for fixed server environments. You do not get a simple battery swap here. Instead, you get a robust backup system. Choose this if you need high power for networking gear rather than just restoring runtime for an existing APC UPS.

APC Smart-UPS Replacement Battery Cartridge

The APC RBC43 is another genuine replacement battery cartridge, similar to the RBC55. It is designed for specific APC Smart-UPS models like the SMT2200RM2UC. It shares the black color and certified compatibility of the original. However, it weighs 42 pounds, which is much heavier than the 2.2-pound RBC55. The dimensions differ, measuring 9.7 inches wide. It serves the same purpose: restoring runtime to a working UPS unit. You pick this if your specific APC model requires the RBC43 instead of the RBC55. It offers the same two-year warranty and factory-spec performance. It is a direct alternative only for models that do not accept the RBC55.

Tripp Lite 1500VA Expandable 2U UPS

The Tripp Lite SMART1500LCDXL is a 1500VA rackmount UPS, not a battery. It weighs 30 pounds and fits in a 2U rack space. It offers expandable runtime for data center setups. This is a complete power solution, unlike the standalone APC RBC55 battery. You get rack compatibility and manual LCD monitoring. It lacks smart app connectivity, focusing on visible status updates. The size is 10.5 inches long. You choose this if you need expandable power for servers in a rack. It provides a full UPS experience rather than a simple battery replacement for an existing unit. It is better for infrastructure needing high capacity and physical expansion options.

Eaton 1440VA Pure Sine Wave UPS

The Eaton 5SC1500 is a 1500VA line interactive UPS with pure sine wave output. It features an LCD display for status monitoring. It weighs 34 pounds and measures 16.1 inches long. This is a complete UPS unit, unlike the APC RBC55 battery cartridge. It provides reliable power for high-end devices needing pure sine waves. You gain advanced monitoring and voltage regulation. You lose the simplicity of a direct battery swap. It suits users who want visible status updates over smart connectivity. It is not rackmountable. Pick this if you need a standalone UPS with pure sine wave output for sensitive equipment, rather than just replacing a battery in an existing APC system.

CyberPower 1500VA Pure Sine Wave Mini-Tower UPS

The CyberPower OR1500PFCLCD is a 1500VA tower UPS with pure sine wave output. It weighs 25 pounds and measures 13.8 inches long. It includes an LCD panel and AVR for desktop workstations. This is a full UPS system, not a replacement battery. It offers reliable power for active PFC equipment. You get tower form factor convenience. You do not get a simple battery swap for an existing APC unit. It suits users needing sine wave power for servers or workstations. The size is larger than the compact APC RBC55. Choose this if you need a standalone tower UPS with pure sine wave output for active PFC devices, rather than just restoring runtime for a specific APC model.

Quick picks

Our 7 picks

1 Best overall

APC Smart-UPS Dedicated Replacement Battery

Best for: APC Smart-UPS SMT2200C and SMT3000C owners

Form Factor

Tower

Warranty

2-Year Warranty

Dimensions

7.2 × 5.59 × 6.81 inches

Weight

2.2 pounds

View on Amazon: APC Smart-UPS Dedicated Replacement Battery Affiliate link

This is the APC Genuine UPS Replacement Battery RBC55. It restores factory runtime for APC Smart-UPS models like the SMT2200C and SMT3000C. The cartridge measures 7.2 by 5.59 by 6.81 inches and weighs 2.2 pounds. It includes a two-year manufacturer warranty. You should use this if your current battery no longer holds a charge or fails to provide backup power during outages.

Pros

• Certified for compatibility with specific APC Smart-UPS models
• Restores original factory runtime specifications
• Includes a two-year manufacturer warranty
• Genuine APC-branded replacement cartridge

Cons

• Limited to specific APC model compatibility
• Does not extend runtime beyond original design
• Requires verifying model match before purchase

Good fit if

• You own an APC Smart-UPS SMT2200C or SMT3000C
• Your current battery no longer provides adequate backup time
• You want to restore original factory performance

Skip if

• You need a battery for a non-APC UPS
• You require extended runtime beyond original specs
• Your UPS unit itself is faulty or failing

Verdict: APC RBC55 Genuine UPS Battery is the correct replacement for APC Smart-UPS SMT2200C and SMT3000C users. It restores original runtime and includes a two-year warranty for reliable backup power.

2 Best budget

Tripp Lite OMNISMART350HG 225W UPS

Best for: medical patient-care areas

Apparent Power

330VA

Output Wattage

225W

UPS Topology

Line-Interactive

Total Outlets

4

Form Factor

Tower

Input Plug Type

Hospital-grade plug

View on Amazon: Tripp Lite OMNISMART350HG 225W UPS Affiliate link

This Tripp Lite unit is a 330VA line-interactive UPS designed for medical environments. It features hospital-grade plugs and outlets for safer connections. The device includes four diagnostic LEDs to track power status. It also offers protection for telephone and DSL lines. You should choose this if you need certified safety for patient-care equipment rather than high power capacity.

Pros

• Hospital-grade plug and outlets for enhanced safety
• UL 60601-1 listed for medical equipment
• Four diagnostic LEDs for status monitoring
• Line protection for TEL/DSL connections

Cons

• Low 225W output limits device support
• No battery replacement data provided
• Bulky 24-pound build for small capacity

Good fit if

• You need UL 60601-1 compliance
• You power sensitive medical devices
• You require hospital-grade safety standards

Skip if

• You need high wattage backup
• You prefer compact lightweight units
• You lack medical certification needs

Verdict: Tripp Lite 330VA Hospital-Grade UPS suits medical facilities needing certified safety. It protects specific equipment but lacks power for general computing needs.

3 Also great

Tripp Lite 1500VA 980W Battery Backup

Best for: Network hardware with 980W load

Apparent Power

1500VA

Output Wattage

980W

Total Outlets

6

Voltage Regulation

AVR

Dimensions

7.48 × 9.02 × 12.8 inches

Weight

40 pounds

View on Amazon: Tripp Lite 1500VA 980W Battery Backup Affiliate link

The Tripp Lite SMART1500 provides 1500VA apparent power and 980W output for server and network hardware protection. It features advanced automatic voltage regulation to correct sags and overvoltages. USB and serial ports enable connection to computers for power management via PowerAlert software. This 40-pound unit measures 12.8 inches in height, making it a solid choice for dedicated rack or tower setups.

Pros

• 1500VA apparent power capacity
• 980W output wattage
• Advanced automatic voltage regulation
• USB and serial connectivity

Cons

• 40-pound weight limits portability
• No LCD display for real-time data
• Requires separate software installation

Good fit if

• You need reliable 1500VA backup for network gear
• You want automatic voltage correction for unstable power
• You prefer serial or USB monitoring

Skip if

• You require a compact tower form factor
• You need a built-in LCD screen
• You want a lighter unit for easy moving

Verdict: Tripp Lite SMART1500 1500VA UPS suits users who prioritize raw wattage and voltage regulation over compact size or built-in displays. It is a practical, heavy-duty option for fixed server environments.

4 Also great

APC Smart-UPS Replacement Battery Cartridge

Best for: Specific APC Smart-UPS model replacements

Form Factor

Rackmount

Warranty

2-Year Warranty

Dimensions

1.1 × 9.7 × 6.5 inches

Weight

42 pounds

View on Amazon: APC Smart-UPS Replacement Battery Cartridge Affiliate link

This APC RBC43 cartridge restores runtime for specific Smart-UPS models. It weighs 42 pounds and measures 9.7 by 6.5 by 1.1 inches. The unit is tested and certified for compatibility with original factory specifications. You should use this genuine APC battery to fix runtime issues if your UPS hardware remains in good shape. It includes a 2-year manufacturer warranty.

Pros

• Genuine APC replacement battery cartridge
• Tested and certified for compatibility
• Restores original factory specifications
• Includes 2-year manufacturer warranty

Cons

• Limited to specific APC Smart-UPS models
• Heavy 42-pound build
• Does not work with all UPS units

Good fit if

• You own an APC Smart-UPS SMT2200RM2UC
• You need a genuine APC replacement
• Your UPS hardware is still functional

Skip if

• You use a non-APC UPS brand
• You need a battery for a different model
• Your UPS unit itself is failing

Verdict: APC RBC43 Replacement Battery Cartridge is the correct replacement for specific APC Smart-UPS models like the SMT2200RM2UC. You should buy this if you need a certified genuine battery to restore runtime to a working UPS unit.

5 Best premium

Tripp Lite 1500VA Expandable 2U UPS

Best for: Rack-mounted server backup with extendable runtime

Apparent Power

1500VA

Output Wattage

900W

Output Waveform

Modified Sine Wave (PWM)

Total Outlets

8

Form Factor

2U Rack Mount

Input Plug Type

NEMA 5-15P

View on Amazon: Tripp Lite 1500VA Expandable 2U UPS Affiliate link

This Tripp Lite unit offers 1500VA and 900W of backup power in a 2U rack-mount form factor. It features automatic voltage regulation to correct brownouts and overvoltages. You can extend runtime by adding an optional external battery pack. The large rotatable LCD screen lets you monitor voltage, load, and battery status directly. It includes dataline surge protection for connected devices.

Pros

• 1500VA apparent power with 900W output
• 2U rack mount or tower form factor
• Optional external battery pack for extended runtime
• Large rotatable LCD for real-time monitoring
• Automatic voltage regulation for stable power

Cons

• Modified sine wave output in battery mode
• Requires separate purchase for external battery pack
• Heavier build at 30 pounds

Good fit if

• You need a 2U rack-mount UPS for server gear
• You require automatic voltage regulation for sensitive electronics
• You want to extend runtime with an external battery

Skip if

• You need pure sine wave output for all modes
• You prefer a compact tower design over rack mount
• You want an all-in-one unit without extra parts

Verdict: Tripp Lite 1500VA 2U Rack UPS suits data center setups needing expandable runtime and rack compatibility. It is ideal for users who value manual monitoring via LCD over app control.

6 Best line interactive

Eaton 1440VA Pure Sine Wave UPS

Best for: Users needing LCD monitoring and pure sine wave output

Apparent Power

1440VA

Output Wattage

1080W

Output Waveform

Pure Sinewave

UPS Topology

Line Interactive

Total Outlets

8

Voltage Regulation

AVR

View on Amazon: Eaton 1440VA Pure Sine Wave UPS Affiliate link

This Eaton 5SC1500 unit offers 1440VA and 1080W of backup power. It features a line-interactive topology with pure sine wave output. An LCD display provides real-time status. The design includes eight battery-protected outlets and automatic voltage regulation. Advanced Battery Management technology aims to extend battery life. This model suits users needing clear monitoring and high-end device compatibility.

Pros

• Pure sine wave output for active PFC compatibility
• LCD display for detailed system status
• 1440VA apparent power and 1080W output
• Advanced Battery Management technology for longer life
• Eight battery-protected outlets with AVR

Cons

• 34-pound weight makes it bulky to move
• 1500VA capacity is lower than some rack options
• No mention of smart connectivity features like SmartConnect

Good fit if

• You need an LCD display for monitoring
• You run equipment with active PFC power supplies
• You want pure sine wave output quality

Skip if

• You require rack-mount installation
• You need extended runtime capabilities
• You prefer a lighter, more portable unit

Verdict: Eaton 5SC1500 1500VA UPS with LCD delivers reliable pure sine wave power with clear LCD monitoring. It fits users who prioritize visible status updates and high-end device compatibility over rack mounting or smart connectivity.

7 Also great

CyberPower 1500VA Pure Sine Wave Mini-Tower UPS

Best for: Active PFC workstations and servers

Apparent Power

1500VA

Output Wattage

1050W

Output Waveform

Sine Wave

Total Outlets

8

Form Factor

Mini-Tower

Input Plug Type

NEMA 5-15P

View on Amazon: CyberPower 1500VA Pure Sine Wave Mini-Tower UPS Affiliate link

This CyberPower unit offers 1500VA apparent power and 1050W output in a mini-tower form factor. It delivers pure sine wave output, which is essential for active PFC power supplies found in modern computers and servers. The built-in LCD panel shows real-time load and battery data. Automatic voltage regulation protects against minor fluctuations. It includes eight outlets for connecting multiple devices securely.

Pros

• Pure sine wave output for sensitive electronics
• 1500VA capacity with 1050W continuous power
• Multifunction LCD displays load and battery status
• Automatic voltage regulation extends battery life

Cons

• Heavier at 25 pounds compared to compact units
• Limited to eight output outlets
• No remote management or network connectivity listed

Good fit if

• You need pure sine wave power for active PFC systems
• You want a tower unit with a clear LCD display
• You require 1500VA capacity for workstations or servers

Skip if

• You need rack-mount form factor for server racks
• You require smart network management features
• You prefer a lighter, more portable design

Verdict: CyberPower 1500VA Tower UPS suits users needing reliable sine wave power for active PFC equipment. Its LCD panel and AVR make it ideal for desktop workstations and small servers.

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