Question 1

Hi. Is this replacement battery cartridge compatible with the APC RS 900 model?

Accepted Answer

Go to the APC website, and append to the root address
"/tools/upgrade_selector/index.cfm" to navigate to the page that gives the recommended battery replacement for your model.
Entering "RS 900" gives a response that it not a valid model number.  Try entering the model number as shown on the bar code sticker on the UPS.

Hope this helps.

Question 2

I have a APC back up ups XS 1000.  Is this particular battery compatible?

Accepted Answer

Yes. If you visit APC's tech specs page for the XS 1000 [1], and scroll down to "Batteries & Runtime", the RBC32 is listed as the replacement battery.

[1] NewEgg doesn't allow links. Google "apc xs 1000 replacement battery", and the APC specs page will be one of the top listings.

Question 3

Will this battery replace the battery in the APC Back-UPS R S 800 battery?  That is the backup unit that I have and need a replacement battery for.

Accepted Answer

Google is your friend. [Google Search for APC Back-UPS RS 800]
According to APC's page, the RBC32 is the replacement battery for the Back-UPS RS800.

Question 4

In my research I found, I think, that an APC back-ups RS 1200 needs a RBC32 battery. Can you tell me if this is so?

Accepted Answer

I believe you need the RBC33.
Google for "apc back ups rs 1200", and the first link is a tech specs page for the APC BACK-UPS 1200VA 120V. The "Batteries & Runtime" section lists the replacement battery as RBC33.
Check the page to make sure it's the one you have.

Type	Battery
Compatibility	Battery Volt-Amp-Hour Capacity: 164
Specifications	Battery Type: Maintenance-free sealed Lead-Acid battery with suspended electrolyte : leakproof Battery mounting: Enclosed battery cabinet Expected Battery Life (years): 3 - 5 Battery Placement: Internal Battery RBC Quantity: 1 Battery blocks per string: 2

Dimensions	7.75" x 5.88" x 2.50"
Weight	11.75 lbs.

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APC UPS Battery Replacement for APC Back-UPS Models BR1000, BX1000, BN1050, BN1250, BR1200, BR500, BR800, BR900, BX1200, BX800, BX900 and select others (RBC32)

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Model
Brand	APC
Model	RBC32

Item#: 9SIC0ZMKHU3933