What are the connectors F1 or F2?

The best solution for a replacement battery is to use the OEM battery. Other optional just do not have the same longevity and quality based on my experience.

what are the measurements? is it a 12volt ? how many amps?

12 Volts. 7 amphours. It has worked fine 1 year of use.

Want to be sure this is compatible with APC BAck-UPS CS 350, Model: BK350?

You need to go to the APC website and enter the model number for the model that you need a replacement battery for. I found that OEM batteries last longer and NewEgg had the best prices for OEM batteries.

What are the dimensions and weight of the APC UPS Battery Replacement?

The dimensions are 1.90 inches x 4.00 inches x 5.50 inches, and it weighs 5.50 lbs.

What is the expected battery life of the APC UPS Battery Replacement?

The expected battery life is 3 to 5 years.

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Main image of APC UPS Battery Replacement for APC Back-UPS Models BE500R, BE550MC, BK300C, BK350, BK500, BK500BLK, BK500M, BK500MC, BK500MUS, and SC420, SU420NET (RBC2)

Alt view image 2 of 7 - APC UPS Battery Replacement for APC Back-UPS Models BE500R, BE550MC, BK300C, BK350, BK500, BK500BLK, BK500M, BK500MC, BK500MUS, and SC420, SU420NET (RBC2)

Alt view image 3 of 7 - APC UPS Battery Replacement for APC Back-UPS Models BE500R, BE550MC, BK300C, BK350, BK500, BK500BLK, BK500M, BK500MC, BK500MUS, and SC420, SU420NET (RBC2)

Alt view image 4 of 7 - APC UPS Battery Replacement for APC Back-UPS Models BE500R, BE550MC, BK300C, BK350, BK500, BK500BLK, BK500M, BK500MC, BK500MUS, and SC420, SU420NET (RBC2)

Alt view image 5 of 7 - APC UPS Battery Replacement for APC Back-UPS Models BE500R, BE550MC, BK300C, BK350, BK500, BK500BLK, BK500M, BK500MC, BK500MUS, and SC420, SU420NET (RBC2)

Alt view image 6 of 7 - APC UPS Battery Replacement for APC Back-UPS Models BE500R, BE550MC, BK300C, BK350, BK500, BK500BLK, BK500M, BK500MC, BK500MUS, and SC420, SU420NET (RBC2)

Alt view image 7 of 7 - APC UPS Battery Replacement for APC Back-UPS Models BE500R, BE550MC, BK300C, BK350, BK500, BK500BLK, BK500M, BK500MC, BK500MUS, and SC420, SU420NET (RBC2)

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APC UPS Battery Replacement for APC Back-UPS Models BE500R, BE550MC, BK300C, BK350, BK500, BK500BLK, BK500M, BK500MC, BK500MUS, and SC420, SU420NET (RBC2)

(29) Write a Review

Expected Battery Life (years): 3 - 5
RBC Quantity: 1
Maintenance-free sealed Lead-Acid battery
REACH: Contains No SVHCs

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Reviews (29)

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APC Replacement Battery Cartridge #2 - Maintenance-free Lead Acid Hot-swappableBattery Type: Maintenance-free Lead Acid Hot-swappableBattery Life: 3 Year to 5 YearOutput Voltage: 12 V DCHeight: 1.9Width: 4"Depth: 5.5"Weight (Approximate): 5.50 lbCompatibility: APC:BE500U - Back-ups ESBK200 - Back-upsBK250B - Back-upsBK250I - Back-upsBK280B - Back-upsBK300C - Back-UPSBK300X116 - Back-UPSBK350 - Back-UPS CSBK400 - Back-UPSBK400B - Back-UPSBK500 - Back-UPSBK500MC - Back-UPSBP280 - Back-UPS ProBP280C - Back-UPS ProBP280IPNP - Back-ups ProBP280PNP - Back-ups ProBP280S - Back-ups ProBP280SX116 - Back-ups ProBP420 - Back-ups ProBP420C - Back-ups ProBP420IPNP - Back-ups ProBP420PNP - Back-ups ProBP420S - Back-ups ProBP500CLR - Back-ups LSBP500UC - Back-ups LSBP700UC - Back-ups LSPCNET - Power CellPCPER - Power CellSP500DR - SP500DRSU420NET - Smart-UPSSUVS420 - Smart-UPS VSBelkin:F6C325-SER - The Regulator Pro Gold SeriesF6C425-SER - The Regulator Pro Gold SeriesF6C500-USB - The Regulator Pro Gold SeriesF6C525-SER - The Regulator Pro Gold SeriesF6C625-SER - The Regulator Pro Gold SeriesF6C650-USB - The Regulator Pro Gold SeriesF6C650-USB-MAC - The Regulator Pro Gold Series-USB-MAC VersionF6C500-USB-MAC - The Regulator Pro Gold Series-USB-MAC VersionLimited Warranty: 1 Year"

Model
Brand	APC
Model	RBC2

Details
Type	Battery
Specifications	Battery Type: Maintenance-free sealed Lead-Acid battery with suspended electrolyte : leakproof Expected Battery Life (years): 3 - 5 RBC Quantity: 1

Dimensions & Weight
Dimensions	1.90" x 4.00" x 5.50"
Weight	5.50 lbs

Additional Information
First Listed on Newegg	September 03, 2025

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APC UPS Battery Replacement for APC Back-UPS Models BE500R, BE550MC, BK300C, BK350, BK500, BK500BLK, BK500M, BK500MC, BK500MUS, and SC420, SU420NET (RBC2)

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APC UPS Battery Replacement for APC Back-UPS Models BE500R, BE550MC, BK300C, BK350, BK500, BK500BLK, BK500M, BK500MC, BK500MUS, and SC420, SU420NET (RBC2)

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Customer Reviews of the APC RBC2

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