Customer Reviews for APC Replacement UPS Battery Cartridge #55, Black (RBC55)
Item # : IM1J36475
Model # : RBC55
The APC RBC55 Replacement Battery Cartridge ensures your work does not get interrupted during power failure by providing extra runtime to the UPS.
- Replacement battery cartridge powers the UPS for extended runtime
- Dimensions: 6.8"H x 5.6"W x 7.2"D
Price is $638.23
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18 reviews
Most helpful positive review
Posted Aug 14, 2025
Adding confidence to operations
Simple removal and replacement and ease of ordering the right replacement battery was essential to keeping our system running with confidence & value.
VS
Most helpful critical review
Posted Oct 10, 2019
Photograph on this product is inaccurate
The photo shows quantity 2 RBC55 modules (4 battery cells). The RBC55 is a single cube containing 2 battery cells.
JLD Cost Consulting
Reviewed at:
apc.com
Posted Aug 14, 2025
Adding confidence to operations
Simple removal and replacement and ease of ordering the right replacement battery was essential to keeping our system running with confidence & value.
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Rusty W
Reviewed at:
apc.com
Posted Mar 28, 2024
Easy
Easy purchase and easy recycling would recommend using APC directly.
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RunTimeKey
Reviewed at:
apc.com
Posted Aug 22, 2023
APC Original battery greatly improved runtimes
Replaced batteries for our SUA2200 with very good results. Previously had tried a compatible brand, cost about 1/2 the price of the APC but had less than about 1/4 of the runtime.
Recalibrating the UPS did take quite a long time but I had excellent [e-mail] support from the APC Tech staff throughout. Several real-world test results did correctly reflect the [updated]...
Recalibrating the UPS did take quite a long time but I had excellent [e-mail] support from the APC Tech staff throughout. Several real-world test results did correctly reflect the [updated]...
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skyy
Reviewed at:
apc.com
Posted Jun 19, 2023
Quantity of one is all you need
I bought quantity two of these since another review mentioned that the photo of the batteries is inaccurate. That review is misleading. The photo of those two units is *exactly* what you get when ordering a quantity of *one* of this RBC55, and it is a complete battery replacement for your compatible UPS. Don't make the same mistake I did, just get quantity of one!
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MICHAEL
Reviewed at:
Quill
Posted Jun 20, 2022
Seem to last the longest
I've tried cheaper off-brand replacement batteries in this UPS but I never got more than 18 months or so out of them before they needed to be replaced. Genuine APC batteries last at least 3 or 4 years. They may cost more initially but in the long run they are a better deal.
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Kwee
Reviewed at:
apc.com
Posted Oct 13, 2020
It was a seemless replacement. Great video help.
Seemless setup great product. Works great. Id do again.
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Hello123
Reviewed at:
apc.com
Posted Jul 23, 2020
Keeps Your Good Equipment Running
Recently purchased these for a customer with an SMT2200 they've had for a while now. The cost for the replacement batteries may seem like a lot but when you consider the cost to replace the whole unit and the reduced waste from simply replacing the batteries, it's really a no-brainer.
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HuntCC
Reviewed at:
apc.com
Posted Apr 22, 2020
it works
after many years it still works.........we often lose power
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Bruce B
Reviewed at:
apc.com
Posted Dec 19, 2019
General Manager
I have always had great service form these guys. This time was no different. Dependable and consistent. Problem solved.
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bbreedlove
Reviewed at:
apc.com
Posted Nov 6, 2019
Good documentation for replacement
No comment on the battery yet as it's at the beginning on its shelf life. Documentation on replacement for each model of UPC was well organized. It would have been better if on the product page or the UPC replacement battery selector page, there were procedures in BOLD printing to help me check to see if I have a dead battery before buying. Two people were searching the...
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Jackie45
Reviewed at:
apc.com
Posted Oct 23, 2019
Dependable Battery !
We only buy the APC Batteries now. The other brands weren't dependable.
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GeoP
Reviewed at:
apc.com
Posted Oct 10, 2019
Photograph on this product is inaccurate
The photo shows quantity 2 RBC55 modules (4 battery cells). The RBC55 is a single cube containing 2 battery cells.
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AE
Reviewed at:
apc.com
Posted May 8, 2017
Easy replacement
Buying the new batteries is much cheaper than buying a new unit if this is the issue. Easy to install.
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Greg the Hermit
Reviewed at:
apc.com
Posted Dec 7, 2015
Easy to install
The batteries were very easy to install. If they give me another 8 years of life out of my SUA3000 I will be amazed. I was prepared to spend thousands on a new UPS when I found out I could spend hundreds and just replace the batteries. Thank you APC!
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JeffOTS
Reviewed at:
apc.com
Posted Aug 28, 2015
Good
I ordered the battery to replace those in my backup unit and everything is retuning good now.
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socaljohn
Reviewed at:
apc.com
Posted May 12, 2014
as advertised
Received replacement battery quickly, easy to install. Works fine. No problem.
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ralphie
Reviewed at:
apc.com
Posted Jun 4, 2012
Pleasantly surprised.....
The battery replacement was defected, but my IT person called and emailed ADP and was told that another replacement would be delivered and no charge.
Well...to my surprised the replacement for the replacement arrived 1 day later. We were told that it would be 3-5 working days....All was good with the new replacement.
Well...to my surprised the replacement for the replacement arrived 1 day later. We were told that it would be 3-5 working days....All was good with the new replacement.
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Steve
Reviewed at:
apc.com
Posted Feb 12, 2012
Great Turn Around
The replacement batteries were shipped on time and arrived sooner than expected. They are easy to install and extend the life of my UPS.
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