Will this battery fit a BK350?

No. According to the APC website, the Back-UPS 350 (BK350) uses either RBC2 or RBC2J. American Battery Company's (ABC) webpage states that their version of the RBC2 will fit the BK350. I usually use ABC as I have had their batteries last longer than APC batteries in most of my devices.

According to APC website, the size should be 5.28 x 2.28 x 2.60. Newegg has 5.28 x 2.60 x 2.64. Can you verify ?

The ones I received measure the Newegg size. I installed one battery without any trouble.

WHAT SIZE IS BATTERY?

Hello, Thank you for contacting us in regards to your question. The dimensions of the item are as follow: 2.6" x 2.64" x 5.28" Thank you, Newegg Support

The serial number on my APC is BE750G. What battery does it use?

look at the connections and ones that are in it now might take two battery's

Does this battery have F1 or F2 terminals? Thanks!

Just measured, this battery has F2 (0.25") terminals. This matches the APC spec.

I need a battery for APS Back-UPS ES 550, SN 3B1808X11137, firmware revision 843.K1.D. Is this battery correct for this model?

William, I don't know about your specific unit, but I recommend using the UPS Upgrade Selector on the APC website. Select the family and model for your backup and it will tell you what battery # you should use. Then you can come back to Newegg and find the correct battery. I have used this a few times and it always steered me in the right direction. Newegg won't let me link to other websites so you'll have to parse this out. I escaped the periods in the domain name. Good luck! www\.apc\.com/tools/upgrade_selector/

can you verify the size. Should it be 5.28 x 2.28 x 2.60 ?

It’s the wrong size for the UPS I have. I’d measure the battery slot with a tape measure before buying one.

Does this battery the replacement battery for the APC Power Saving Back-UPS 750?

Camn't say because I used this in an APC Back UP ES-350

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APC UPS Battery Replacement for APC Back-UPS models BE350G (RBC35)

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Expected Battery Life (years): 3 - 5
RBC Quantity: 1
Maintenance-free sealed Lead-Acid battery
Battery mounting Stand alone battery stack

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APC Replacement Battery Cartridge #35 - Spill Proof, Maintenance Free Lead Acid Hot-swappable

Best Seller Ranking	#49 in UPS Replacement Battery & Accessories

Model
Brand	APC
Model	RBC35

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

Features
Features	Battery Characteristics: Spill-proof/Maintenance-freeBattery Chemistry: Lead AcidHot Swappable: YesMinimum Battery Life: 3 YearMaximum Battery Life: 5 YearHeight: 2.6" (66 mm)Width: 2.6" (67.1 mm)Depth: 5.3" (134.1 mm)Weight (Approximate): 1.36 kgPackage Contents: Replacement Battery Cartridge #35Authorized Return Service (ARS) tagAll required connectorsBattery recycling guideInstallation GuideReusable packagingLimited Warranty: 1 Year

Dimensions & Weight
Dimensions	2.60" x 2.64" x 5.28"
Weight	3.08 lbs.

Additional Information
First Listed on Newegg	August 30, 2007

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Warranty, Returns, And Additional Information

Warranty

Limited Warranty period (parts): 2 years
Limited Warranty period (labor): 2 years
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The APC RBC35 is a replacement battery cartridge for the APC Back-UPS BE350G, suited to owners restoring backup-battery service in that UPS. It contains one maintenance-free, spill-proof sealed lead-acid battery, is hot-swappable, and has an expected life of 3–5 years.

Recommended For

Owners of an APC Back-UPS BE350G whose battery needs replacing and who want the RBC35 cartridge specified for that UPS.
Home-office users who already rely on a BE350G for brief backup during outages and want to restore its battery-backup function without replacing the whole UPS.
People maintaining a BE350G used for low-power essentials, such as a modem or router, who need to replace its worn battery rather than add more backup capacity.

Spec Summary

Attribute	Value
Best For	Replacing the battery in an APC UPS, including the Back-UPS BE350G; the RBC35 is a single-battery replacement cartridge
Battery Chemistry And Safety	Maintenance-free, spill-proof sealed lead-acid battery with suspended electrolyte; rechargeable and hot-swappable
Battery Life And Power	Expected life of 3–5 years; 12 V
Quantity And Mounting	One battery in a standalone battery stack
Dimensions And Weight	Approximately 2.60 × 2.64 × 5.28 in and 3.08 lb
Included Components And Warranty	Includes required connectors, an ARS tag, a battery recycling guide, an installation guide, and reusable packaging; 1-year limited warranty
Model Identifiers	APC RBC35 replacement battery cartridge

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APC UPS Battery Replacement for APC Back-UPS models BE350G (RBC35)

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Item#: N82E16842101200

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APC UPS Battery Replacement for APC Back-UPS models BE350G (RBC35)

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