APC Genuine UPS Replacement Battery Alternatives: 6 Similar Picks Compared
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
If you are looking for apc genuine ups replacement battery alternatives, this guide compares 6 similar picks. The original APC RBC2 cartridge restores factory performance for compatible Back-UPS and Smart-UPS models. It offers a certified fit with a two-year warranty and specific dimensions of 2.52 by 3.7 by 5.94 inches. This makes it ideal for users who want to maintain their existing chassis.
However, you might need a different solution. Some buyers require a complete system replacement rather than a bare battery swap. Others have older units that need a larger capacity or a different form factor. The alternatives listed here were chosen because their specs overlap with the original product. You will find options ranging from compact RBC replacements to full standby UPS units. This list helps you find the right match based on your specific hardware needs and power requirements.
Our top pick: APC Replacement Battery Cartridge.
How each alternative compares
Amazon Basics 800VA 450W 12-Outlet Standby UPS
This Amazon Basics unit replaces the entire UPS rather than just the internal battery. It offers 450W of power across 12 outlets, providing a complete system upgrade for home networks. The dimensions are larger at 12.2 inches in length, making it suitable for desktop use. You get orderly shutdowns during blackouts without needing to open your existing chassis. Choose this if your original UPS hardware is failing or you need more outlets. It sacrifices the compact, tool-free swap of the RBC2 for a broader power solution.
APC UPS Replacement Battery Cartridge
The RBC17 cartridge is a larger replacement cell designed for select APC Back-UPS models. It weighs 6.31 pounds, significantly more than the 1.54-pound RBC2, indicating a higher capacity or different internal construction. The dimensions are slightly wider and longer, requiring a compatible chassis to fit. It provides certified factory performance and tool-free hot-swap installation. Pick this if your specific UPS model requires the RBC17 form factor. It gives up the compact size of the RBC2 but ensures proper fitment for larger back-up systems.
APC Compact UPS Replacement Battery
This RBC35 battery is tailored for entry-level desktop UPS models like the BE350G. It is smaller and lighter than the RBC2, weighing 3.08 pounds with a height of only 2.6 inches. The dimensions are more compact, fitting into smaller chassis spaces. It restores original runtime for these specific units with a direct factory fit. Select this if you own a BE350G or BE350C. It sacrifices the higher capacity or specific certification of the RBC2 for a precise fit in smaller, budget-oriented APC units.
APC Back-UPS Replacement Battery Cartridge
The APCRBC110 is an authentic power cell for the BE550G chassis. It weighs 1 pound, lighter than the RBC2, and has a different shape with a width of 5.95 inches. This model-specific design ensures a direct fit for BE550G units. It delivers a two-year manufacturer warranty to restore proper runtime. Choose this if your APC BE550G requires this specific cartridge. It gives up the versatility of the RBC2, which fits BK350 and BK500 models, in favor of optimized performance for the BE550G.
CyberPower 550VA Standby Battery Backup UPS
This CyberPower unit is a standalone 550VA UPS, not a replacement battery. It offers 330W across four battery-supported outlets, serving as a complete backup replacement. The dimensions are 9.75 inches long, making it larger than the RBC2 cartridge. It is practical when you prefer replacing aging hardware entirely rather than swapping a cell. Pick this if you want a new device for low-power workstations. It sacrifices the simplicity of a drop-in battery swap for a fresh, standalone power backup solution.
APC Back-UPS and Smart-UPS Replacement Battery
The APCRBC124 is a larger replacement battery for BX1500M and SMC1000-2UC units. It weighs 1.54 pounds, matching the RBC2, but is significantly longer at 8.86 inches. The dimensions require a compatible chassis designed for this size. It provides certified OEM power restoration with a two-year warranty. Choose this if you own a BX1500M or SMC1000-2UC. It gives up the compact fit of the RBC2 for a larger form factor needed in higher-capacity APC systems.
Quick picks
Our 7 picks
APC Replacement Battery Cartridge
Best for: compatible Back-UPS and Smart-UPS owners
- Dimensions
- 5.94 × 2.52 × 3.7 inches
- Weight
- 1.54 pounds
This APC replacement battery restores factory runtime to your compatible UPS chassis. It measures approximately 5.94 inches long, 2.52 inches wide, and 3.70 inches high, weighing roughly 1.54 pounds. The unit comes in black and includes a two-year manufacturer warranty. You get certified compatibility for supported hardware like the BK350, BK500, and SC420 lines without altering original specifications.
Pros
- Tested and certified to restore factory specifications
- Backed by a two-year manufacturer warranty
- Compact footprint measuring 5.94 by 2.52 by 3.70 inches
- Lightweight build at approximately 1.54 pounds
Cons
- Compatibility restricted to BK350, BK500, BK500BLK, and SC420 units
- Cannot fix runtime problems if the underlying UPS hardware is degraded
Good fit if
- You own a BK350, BK500, BK500BLK, or SC420 UPS unit requiring a battery swap.
- You prefer an official certified cartridge covered by a two-year warranty.
Skip if
- You own a UPS model outside the supported BK and SC product lines.
- You have an aging UPS chassis where the base electronics require total replacement.
Verdict: APC Compact Replacement Battery Cartridge delivers certified factory performance and two-year warranty coverage for compatible Back-UPS and Smart-UPS systems. It provides direct dimensional fitment when your existing chassis remains fully functional.
Amazon Basics 800VA 450W 12-Outlet Standby UPS
Best for: complete system replacements over bare battery swaps
- Apparent Power
- 800VA
- Output Wattage
- 450W
- UPS Topology
- Standby
- Total Outlets
- 12
- Input Plug Type
- NEMA 5-15P
- Dimensions
- 12.2 × 7 × 3.14 inches
View on Amazon: Amazon Basics 800VA 450W 12-Outlet Standby UPS
This Amazon Basics unit is an 800VA, 450W standby uninterruptible power supply rather than a standalone replacement cartridge. You get 12 total NEMA 5-15R outlets, divided evenly between surge-only and battery-backed power. It delivers approximately 12 minutes of runtime at half load and 2 minutes at full load. This design suits you if you prefer replacing an entire aging UPS system instead of swapping an internal cell for your home office or entertainment equipment.
Pros
- Provides 12 total NEMA 5-15R outlets, with 6 featuring battery backup
- Rated for 800VA and 450W power capacity
- Offers approximately 12 minutes of runtime at half load (225W)
- Includes a 5-foot cord with a 45-degree right-angle offset plug
Cons
- Full standalone unit instead of an internal drop-in battery cartridge
- Full-load runtime is limited to approximately 2 minutes
- Uses standby topology without line-interactive voltage regulation
Good fit if
- You want a complete backup unit with 12 outlets instead of a bare battery
- You need up to 450W of power protection for connected electronics
- You want downloadable power management software support
Skip if
- You only need an internal replacement battery cartridge for an existing APC chassis
- You require line-interactive voltage regulation rather than standby operation
Verdict: Amazon Basics 800VA 12-Outlet Standby UPS provides a complete system alternative to replacing just an internal battery, offering 450W of power across 12 total outlets. It ensures orderly shutdowns during short blackouts for home networks and desktop peripherals.
APC UPS Replacement Battery Cartridge
Best for: restoring compatible APC Back-UPS units
- Dimensions
- 6 × 2.5 × 3.75 inches
- Weight
- 6.31 pounds
This official APC battery cartridge restores compatible power supplies to their original factory runtime specifications. Measuring 6 by 2.5 by 3.75 inches and weighing 6.31 pounds, the unit comes fully assembled for hot-swap installation without specialized tools. It fits designated Back-UPS units like the BE650G1, BR700G, and BE850G2. It suits you if you want a direct manufacturer-certified drop-in replacement backed by a two-year warranty.
Pros
- Fully assembled for hot-swap installation without tools
- Covered by a 2-year manufacturer warranty
- Certified to restore UPS performance to factory specifications
- Compact dimensions of 6 by 2.5 by 3.75 inches
Cons
- Compatible with only six specific APC Back-UPS models
- Will not restore expected runtime if the UPS hardware itself is failing
Good fit if
- You own a compatible APC model like the BE650G1, BR700G, or BE850G2.
- You want a fully assembled cartridge for tool-free installation.
- You require an OEM battery with a 2-year warranty.
Skip if
- You operate an APC UPS model outside the specified compatibility list.
- You suspect your UPS chassis electronics are degraded rather than just the battery.
Verdict: APC Back-UPS Replacement Battery provides certified factory performance and tool-free hot-swap installation for select APC models. Its two-year manufacturer warranty ensures direct replacement reliability if your UPS hardware remains in good working order.
APC Compact UPS Replacement Battery
Best for: APC BE350G and BE350C Back-UPS owners
- Dimensions
- 5.28 × 2.28 × 2.6 inches
- Weight
- 3.08 pounds
This genuine APC replacement battery cartridge restores power to small desktop UPS units. It weighs 3.08 pounds and measures 5.28 by 2.28 by 2.6 inches, making it a compact drop-in cell backed by a 2-year manufacturer warranty. You get factory-certified compatibility for select entry-level Back-UPS systems. It suits you if your existing unit suffered runtime loss but the main electronics remain fully functional.
Pros
- Includes 2-year manufacturer warranty
- Compact footprint at 5.28 by 2.28 by 2.6 inches
- Lightweight at 3.08 pounds
- Factory-tested and certified cartridge
Cons
- Compatibility limited strictly to BE350G and BE350C models
- Will not resolve runtime issues if the UPS electronics are degraded
Good fit if
- You own an APC Back-UPS BE350G or BE350C unit
- You want an official replacement cartridge backed by a 2-year warranty
Skip if
- You have a different APC model series
- You experience UPS hardware failure beyond simple battery wear
Verdict: APC Compact UPS Replacement Battery restores original runtime to select entry-level desktop UPS models. It provides a direct factory fit when your existing unit chassis remains in good working condition.
APC Back-UPS Replacement Battery Cartridge
Best for: restoring runtime on APC BE550G units
- Dimensions
- 2.55 × 5.95 × 4.15 inches
- Weight
- 1 pounds
This genuine APC replacement battery cartridge restores your compatible APC Back-UPS to original factory specifications. The black cartridge measures 5.95 inches wide, 4.15 inches high, and 2.55 inches long, weighing one pound. It includes a two-year manufacturer warranty. You will find this cartridge suits you if your UPS chassis is in good shape but suffers from runtime issues, and you specifically require an official replacement for Back-UPS model BE550G.
Pros
- Tested and certified to restore original factory specifications
- Backed by a 2-year manufacturer warranty
- Lightweight 1-pound cartridge
- Compact dimensions of 5.95 by 4.15 by 2.55 inches
Cons
- Compatibility limited specifically to Back-UPS model BE550G
- Does not resolve runtime issues if the UPS hardware itself is worn out
Good fit if
- You own an APC Back-UPS model BE550G requiring a fresh battery cell.
- You want an official cartridge covered by a 2-year manufacturer warranty.
- You have an operational UPS chassis that only suffers from battery degradation.
Skip if
- You use any UPS model other than the BE550G.
- You need to replace an entire damaged or malfunctioning UPS unit.
Verdict: APC Back-UPS Replacement Battery provides an authentic, factory-tested power cell tailored to the BE550G chassis. It delivers a direct fit and a two-year manufacturer warranty to restore proper runtime.
CyberPower 550VA Standby Battery Backup UPS
Best for: replacing entire low-power workstation or network setups
- Apparent Power
- 550VA
- Output Wattage
- 330W
- Output Waveform
- Simulated Sine Wave
- UPS Topology
- Standby
- Total Outlets
- 8
- Input Plug Type
- NEMA 5-15P
Instead of swapping an old battery pack, the CyberPower 550VA Standby UPS gives you a complete replacement unit with a 330W output capacity. It features eight total NEMA 5-15R outlets, splitting them evenly between battery backup and surge protection. Built-in USB connectivity handles automatic OS shutdown signaling, while the five-foot cord fits tight wall spaces. It suits you if you want an all-in-one power unit for home networking gear.
Pros
- Eight total outlets: four battery backup with surge and four surge-only
- HID-compliant USB port supports built-in OS power management
- Three-year warranty covers both the chassis and the internal battery
- Right-angle 45-degree offset plug on a five-foot power cord
Cons
- Limited to 330W maximum power capacity
- Outputs simulated sine wave instead of pure sine wave
- Only four of the eight outlets deliver battery backup
Good fit if
- You need an entirely new UPS rather than just a replacement battery cell
- You run low-draw workstations or networking hardware under 330W
- You want native USB communication for automated system shutdowns
Skip if
- You only need a replacement battery cartridge for an existing APC chassis
- You require pure sine wave output for sensitive active PFC equipment
- Your connected equipment exceeds 330W or 550VA total load
Verdict: CyberPower 550VA Standby UPS serves as an entire standalone backup replacement rather than a drop-in cell, offering 330W across four battery-supported outlets. It is a practical solution when you prefer replacing aging hardware completely.
APC Back-UPS and Smart-UPS Replacement Battery
Best for: APC BX1500M and SMC1000-2UC UPS owners
- Dimensions
- 8.86 × 7.24 × 3.78 inches
- Weight
- 1.54 pounds
View on Amazon: APC Back-UPS and Smart-UPS Replacement Battery
This APC replacement battery cartridge restores your compatible UPS unit to original factory specifications. It measures 8.86 inches long, 7.24 inches wide, and 3.78 inches high, weighing approximately 1.54 pounds. The unit includes a 2-year manufacturer warranty for coverage. It suits you if you need an official manufacturer cartridge designed specifically for hardware such as the Back-UPS BX1500M, Back-UPS BR1500G, or Smart-UPS SMC1000-2UC system.
Pros
- Backed by a 2-year manufacturer warranty
- Tested and certified to restore factory performance specifications
- Direct compatibility with BX1500M, BR1500G, and SMC1000-2UC units
- Compact footprint measuring 8.86 by 7.24 by 3.78 inches
Cons
- Restricted to specific Back-UPS and Smart-UPS models
- No mounting hardware or wiring adapters listed
Good fit if
- You own an APC BX1500M, BR1500G, or SMC1000-2UC UPS.
- You require a certified OEM cartridge backed by a 2-year warranty.
Skip if
- You operate a UPS model outside the specified compatibility list.
- You need a universal replacement battery with generic connectors.
Verdict: APC Back-UPS and Smart-UPS Replacement Battery provides certified OEM power restoration for select BX1500M, BR1500G, and SMC1000-2UC units. Its factory specifications and two-year warranty ensure precise fitment.
Specifications side by side
| Spec | APC Replacement Battery Cartridge | Amazon Basics 800VA 450W 12-Outlet Standby UPS | APC UPS Replacement Battery Cartridge | APC Compact UPS Replacement Battery | APC Back-UPS Replacement Battery Cartridge | CyberPower 550VA Standby Battery Backup UPS | APC Back-UPS and Smart-UPS Replacement Battery |
|---|---|---|---|---|---|---|---|
| Apparent Power | not specified | 800VA | not specified | not specified | not specified | 550VA | not specified |
| Output Wattage | not specified | 450W | not specified | not specified | not specified | 330W | not specified |
| Output Waveform | not specified | not specified | not specified | not specified | not specified | Simulated Sine Wave | not specified |
| UPS Topology | not specified | Standby | not specified | not specified | not specified | Standby | not specified |
| Total Outlets | not specified | 12 | not specified | not specified | not specified | 8 | not specified |
| Input Plug Type | not specified | NEMA 5-15P | not specified | not specified | not specified | NEMA 5-15P | not specified |
| Dimensions | 5.94 × 2.52 × 3.7 inches | 12.2 × 7 × 3.14 inches | 6 × 2.5 × 3.75 inches | 5.28 × 2.28 × 2.6 inches | 2.55 × 5.95 × 4.15 inches | 3 × 9.75 × 6 inches | 8.86 × 7.24 × 3.78 inches |
| Weight | 1.54 pounds | 9.4 pounds | 6.31 pounds | 3.08 pounds | 1 pounds | 6.4 pounds | 1.54 pounds |
| Size | RBC2 | Standby | RBC17 | RBC35 | APCRBC110 | 550VA | APCRBC124 |
| Color | black | Black | Black | Black | Black | Black | Black |
| Model | RBC2 | Amazon Basics UPS - 800 VA | RBC17 | RBC35 | APCRBC110 | CP550SLG | APCRBC124 |
If you also need a compact PC chassis, evaluate dimensions across okinos genuine walnut wood micro alternatives.
Frequently asked questions
Which APC battery fits my Back-UPS model?
The APC Replacement Battery Cartridge RBC2 is designed for compatible Back-UPS and Smart-UPS systems. It measures 2.52 by 3.7 by 5.94 inches and weighs 1.54 pounds. This cartridge provides a direct dimensional fit for your existing chassis. You should verify your specific UPS model number against APC’s compatibility list before purchasing to ensure proper installation.
Is there a budget option for APC BE350G units?
The APC Compact UPS Replacement Battery RBC35 is the best budget choice for BE350G and BE350C owners. It measures 2.28 by 2.6 by 5.28 inches and weighs 3.08 pounds. This battery restores original runtime to entry-level desktop models. It provides a direct factory fit when your existing unit chassis remains in good working condition.
What battery works for the BE550G UPS?
The APC Back-UPS Replacement Battery Cartridge APCRBC110 is tailored for the BE550G chassis. It measures 5.95 by 4.15 by 2.55 inches and weighs 1 pound. This authentic, factory-tested power cell delivers a direct fit. It helps restore proper runtime for your specific APC unit without requiring a full system replacement.
Can I replace my entire UPS instead of just the battery?
Yes, the Amazon Basics 800VA Standby UPS serves as a complete system alternative. It offers 450W of power across 12 total outlets. The unit measures 12.2 by 7 by 3.14 inches and weighs 9.4 pounds. This option ensures orderly shutdowns for home networks and desktop peripherals during short blackouts, rather than just swapping a cell.
What is the best choice for BX1500M units?
The APC Back-UPS and Smart-UPS Replacement Battery APCRBC124 is certified for BX1500M, BR1500G, and SMC1000-2UC units. It measures 7.24 by 3.78 by 8.86 inches and weighs 1.54 pounds. This battery provides certified OEM power restoration with precise fitment. It ensures your larger UPS models receive the correct factory specifications for reliable operation.
Is there a standalone UPS for low-power workstations?
The CyberPower 550VA Standby Battery Backup UPS CP550SLG is a practical standalone replacement. It offers 330W across four battery-supported outlets. The unit measures 9.75 by 6 by 3 inches and weighs 6.4 pounds. This serves as an entire backup replacement rather than a drop-in cell, ideal when you prefer replacing aging hardware completely.
Which battery supports tool-free hot-swap installation?
The APC UPS Replacement Battery Cartridge RBC17 provides tool-free hot-swap installation for select APC models. It measures 2.5 by 3.75 by 6 inches and weighs 6.31 pounds. This cartridge is designed for restoring compatible APC Back-UPS units. Its design allows for direct replacement reliability if your UPS hardware remains in good working order.