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  • Replacement Battery for APC Back UPS ES 350
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Replacement Battery for APC Back UPS ES 350

| 14 answered questions

List Price: $39.99
Price: $16.00 & FREE Shipping
You Save: $23.99 (60%)
In Stock.
Ships from and sold by First Web Sales.
  • 12v 3.2ah - 12 Volt 3.2 Amp Hour
  • non spillable, arrives charged and ready to install
  • F1 terminals
  • Length 5.25. Width 2.63. Height 2.64. Terminals F1
  • Weight (3.2)
8 new from $2.36

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Frequently Bought Together

Replacement Battery for APC Back UPS ES 350 + APC Back-UPS ES 550VA Replacement Battery + APC Back-UPS ES 500 Battery 12V 7Ah
Price for all three: $51.57

These items are shipped from and sold by different sellers.

Buy the selected items together


Technical Details

  • Model: PK1230
  • Model Name: APC Replacement Battery 35 RBC35

Product Details

  • Shipping Weight: 20 pounds (View shipping rates and policies)
  • ASIN: B006X98A7C
  • Item model number: PK1230
  • Average Customer Review: 4.4 out of 5 stars  See all reviews (231 customer reviews)
  • Amazon Best Sellers Rank:
  • Date first available at Amazon.com: January 14, 2012

Product Description

The RBC35 Replacement Battery Cartridge that we sell is made of high quality long life batteries. This battery is not OEM branded, but is designed to meet or exceed OEM battery without the high price from the manufacturer. These batteries are designed to handle UPS loads and are tried and tested to meet and exceed manufacturer's specifications. The batteries that we sell are the same high quality batteries we install into the UPS systems we offer. By purchasing high quality batteries you are ensuring that your UPS will perform as required during a power outage. Having high quality batteries is having peace of mind knowing that your equipment is protected. The RBC35 battery pack that we sell is ready to go, plug and play installation. Pull out the old RBC35 and replace it with this new RBC35 and you're ready to go.

Customer Questions & Answers

Customer Reviews

Connectors fit onto the terminals but not tightly.
Dana L Miller
I replaced the original battery with this one a few months ago and it has worked perfectly and fit perfectly in my APC 350 UPS.
Dave P.
We have a company that sends us a postage paid box that we can put used batteries in and ship to them at no cost to us.
Lynn A. Smith

Most Helpful Customer Reviews

33 of 34 people found the following review helpful By Nostalgic Gamer on May 9, 2013
Verified Purchase
Be Careful! There are TWO vastly different sizes for the battery for the APC Back-UPS ES Model BE350. Note that batteries are not returnable!

I THINK the two batteries are the RBC (longer, 5.2 x 2.6 x 2.4 inches) and the RBC45 (more square, measures 3.54 x 2.76 x 4.21 inches). I use the latter.

Make sure you MEASURE your battery and then order the one that specifies that it is the right size! That will give you the best chance of getting the right battery. (The only exception is if the description is wrong.)

I have had good luck with the APC and Power Sonic brands of batteries. They seem to last a long time.

I recommend once you find one that is right for your application, buy an extra one to have as later replacement!
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17 of 17 people found the following review helpful By Borkti on April 29, 2012
Verified Purchase
My UPS would beep every time I turned it on, even without anything plugged into it. I ordered this battery and placed it in the UPS after I had finally figured out that the battery had to be put in with the terminals DOWN so that the lid would slide shut. (A diagram would be helpful for those of us who didn't remember which way the old battery was placed in there when we took it out several weeks before we decided to try a replacement. I finally found a diagram on the web.) I let the battery charge for several hours before plugging anything in to the UPS and then set it up so that my cable which has internet, TV and phone on it has everything backed up for forty-five minutes to an hour so that when we have short power outages (common here) I won't lose my phone service or my weather updates.

Short story, it works as it should.
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12 of 12 people found the following review helpful By hanzvonkonstanz on April 25, 2012
Verified Purchase
I bought this product with the hope that it would ''renew'' my UPS ES350. It worked! I put this battery in and my ups and now it's as good as new! I am happy I bought this battery.
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8 of 8 people found the following review helpful By Bob on October 17, 2012
Verified Purchase
Battery worked well make sure that you request .187" to .250" terminal adapters if your old battery has .250" terminals otherwise the .250" connector on the wire will not fit tight on your replacement battery that has .187" terminals.
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10 of 11 people found the following review helpful By David B. Holliday on January 23, 2014
Verified Purchase
This battery did not fit my APC Back UPS ES 350. This battery is rectangular. The battery from my unit is square. Apparently all APC Back UPS ES 350s don't use the same battery. You need to identify which battery is the right one for your ES 350 before ordering. If you order the wrong one contact the seller to return it. If you click the Return or Replace button on the Amazon page you will get a message that says "For safety reasons, items that are classified as hazardous materials or use flammable liquids or gases cannot be returned to Amazon.com. Customers should dispose of hazardous materials according to Local, State and Federal regulations. Customers should contact their local government or local waste company for directions on how to dispose of Household Hazardous Waste."
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4 of 4 people found the following review helpful By beergeek on April 21, 2013
Verified Purchase
I purchased this to replace the original battery in my APC Back-UPS 350. This battery is significantly less expensive than the APC branded one. One of the reviews mentioned a problem with fit. I did find this battery a tighter fit in the Back-UPS 350 than the original but with a little care it does fit. The product is performing without problem protecting my second computer. I would definitely recommend this product.
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4 of 4 people found the following review helpful By Dave P. on February 23, 2013
Verified Purchase
I replaced the original battery with this one a few months ago and it has worked perfectly and fit perfectly in my APC 350 UPS.
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4 of 4 people found the following review helpful By CoralS on July 22, 2012
Verified Purchase
The product arrived very fast and in good condition. I had a little problem uninstalling the old battery, for some reason it was stuck, but once I took it off it was easy to install and it's working properly. Great Buy!
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