Question 1

Will this battery fit a BK350?

Accepted Answer

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.

Question 2

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 ?

Accepted Answer

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

Question 3

WHAT SIZE IS BATTERY?

Accepted Answer

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

Question 4

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

Accepted Answer

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

Question 5

Does this battery have F1 or F2 terminals? Thanks!

Accepted Answer

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

Question 6

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

Accepted Answer

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/

Question 7

amps, volts,  ?

Accepted Answer

12 Volt 3.5 Amp Hour

Question 8

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

Accepted Answer

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

Question 9

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

Accepted Answer

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

Brand	APC
Model	RBC35

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

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

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Item#: 9SIBJRMM703431