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Replacement Battery for APC Back UPS ES 350

4.5 4.5 out of 5 stars 2,698 ratings

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1 Pack
Number of Batteries 1 Lithium Ion batteries required. (included)
Brand ExpertPower
Battery Cell Composition Lead Acid
Unit Count 1.0 Count

About this item

  • Genuine ExpertPower Battery - The Most Trusted And Highest Reviewed Sealed Lead Acid Batteries On Amazon
  • Battery Type - 12 Volt 3.3 Amp 20 Hour Sealed Lead Acid Battery With F1 Terminals
  • Battery Dimensions - 5.28 in (length) x 2.63 in (width) x 2.42 in (depth); Weight - 2.9 lbs.
  • Compatibility - The EXP1233 Is a replacement for APC Back-UPS ES 350, BE350E, BE350C, BE350R, and BE350U.
  • User Friendly - Items Arrive Fully Charged And Make For A Simple, Plug and Play Installation
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Additional Details

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Note: Products with electrical plugs are designed for use in the US. Outlets and voltage differ internationally and this product may require an adapter or converter for use in your destination. Please check compatibility before purchasing.

From the brand


Product Description

exp1233-1
exp1233-2
exp1233-3

Recommended charger

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Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here. [PDF ]

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Replacement Battery for APC Back UPS ES 350


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Customer reviews

4.5 out of 5 stars
2,698 global ratings

Customers say

Customers like the functionality, value for money, and ease of installation of the battery. They mention it works well, is worth the purchase, and is an easy investment. However, some customers disagree on the fit, battery life, and longevity.

AI-generated from the text of customer reviews

407 customers mention "Functionality"365 positive42 negative

Customers like the functionality of the battery. They mention it works well, fits into their APC Back UPS ES 350 compartment, and has no issues at all. Some say they are satisfied and have no idea about its longevity.

"Plug and play. No objections thus far." Read more

"3 minute install. No issues. First outage and the battery did last for about 40 minutes for my modem and router." Read more

"Works fine" Read more

"Product as described, easy installation, works well." Read more

250 customers mention "Value for money"237 positive13 negative

Customers appreciate the value for money of the battery. They say it works well, is worth the purchase, and an easy investment.

"a good value for the money" Read more

"Great value. Local retail store was twice the price. Twice...." Read more

"A great battery at a good price. Unfortunately it did not fix my UPS because the UPS didn’t need a battery, it was broken...." Read more

"...This aftermarket battery perfectly fits. It was inexpensive. Now I don’t have to buy a new UPS." Read more

88 customers mention "Ease of installation"85 positive3 negative

Customers find the battery easy to install. They mention it works immediately, no tools are required, and the replacement only took a couple of minutes.

"Plug and play. No objections thus far." Read more

"...the same size as the original, I would give it 5 stars for "Easy to Install". I will buy one again for my other ACP Back Up." Read more

"Product as described, easy installation, works well." Read more

"The battery was the right size and easy to install! It fixed the UPS." Read more

311 customers mention "Fit"210 positive101 negative

Customers have mixed opinions about the fit of the battery. Some mention it fits perfectly and works great, while others say it didn't fit that model internally, the battery case was over-sized in one dimension, and the terminals on this battery are markedly smaller than the terminals on the APC battery.

"Only had it a short while, but so far, so good. It fit perfectly into the apc housing" Read more

"...Fit was perfect.Make sure to measure your old battery and get one with the same dimensions...." Read more

"...First, the battery case was over-sized in one dimension making it difficult to reinstall the slide-in plastic cover...." Read more

"The product fits my power supply just right and I was able to figure out how to install it is not..." Read more

239 customers mention "Battery life"146 positive93 negative

Customers have mixed opinions about the battery life of the product. Some mention it looks like a good replacement battery, while others say it's an indication that the batteries were going bad and just failed after 6.5 years.

"Battery was a perfect match to the original." Read more

"...They had no shelp life.I am way outside the window for returning them and will probablly take them to the local dump for recycling...." Read more

"...I was pleased to see that YES indeed, replacement batteries are more cost effective than replacing the whole thing and well...at less than $20, it..." Read more

"This is a cheaper replacement for a failed APC battery than the APC branded one...." Read more

63 customers mention "Longevity"42 positive21 negative

Customers have mixed opinions about the battery's longevity. Some mention that it's of solid quality, while others say they don't expect it to last very long.

"...It was in excellent condition but I can certainly see how, given the weight of the item, damage could occur if it is dropped or handled roughly..." Read more

"...it did not fix my UPS because the UPS didn’t need a battery, it was broken. I don’t blame the vendor at all for not accepting a return...." Read more

"...It came well packaged and in great condition...." Read more

"...They last several years, so it’s an easy investment. Time will tell how long this will last:" Read more

27 customers mention "Charge rate"16 positive11 negative

Customers have mixed opinions about the charge rate of the battery. Some mention it's fully charged upon arrival, while others say it fails to charge and cannot be recharged.

"...They fit right into place and turn on and pass the self test. I'll update this review in the future if I run into any problems...." Read more

"I was a little disappointed that the battery need to be charged before I could use it, but it is working perfect" Read more

"...Installed easily in my APC BE-350G units. Arrived charged and worked immediately...." Read more

"...This battery failed in less then ten minutes and now won't even accept a charge and will not stay powered on...." Read more

20 customers mention "Beeping noise"5 positive15 negative

Customers are dissatisfied with the beeping noise of the battery. They mention it starts making a constant noise, and the alarm screeches.

"...Turns out it was the battery causing the alarm to screech. Swap took 5 minutes at most and now I have a working UPS for my TV again." Read more

"...It was swelled when I took it out, and the unit was beeping. It was time...." Read more

"...In installed with no problems, it did not beep so I know it was recharged...." Read more

"...Delivered on Sat. No problem there. Plug it in, UPS starts ear piercing warning tone and smoke starts to pour out of the backend...." Read more

Spade connectors too small for my APC Back UPS ES 350 - this uses F1, not F2
4 out of 5 stars
Spade connectors too small for my APC Back UPS ES 350 - this uses F1, not F2
:: Update ::When I'm wrong, I admit it.I purchased this battery for my APC Back UPS ES 350, but didn't look for what type of connectors it had. Didn't know I needed to. Did you know that identical units apparently come with F1 -or- F2 connectors? Me neither.My original battery has F2 connectors which are .25" wide.The battery sold here has F1 connectors which are .187" wide.This is why my cables just slipped off the battery connectors.Anyway, I hope my ignorance can educate others.I updated the rating from 3 stars to 4 stars. If the seller had made it more apparent that you must check the connector types before ordering, I would take full responsibility. But I think they still need to take some themselves.---------My original Duracell DURA12-3.3F2 battery failed in an APC Back UPS ES 350 so I purchased this to replace it. I've been replacing UPS batteries for decades, and have never seen the wrong size spade connectors.The new battery is shown on top in the photo, and the original Duracell battery beneath. The UPS wire connectors just slip off when attaching.The battery itself may be just fine, but I'll never know.
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Top reviews from the United States

Reviewed in the United States on May 21, 2024
Size: 1 PackVerified Purchase
Plug and play. No objections thus far.
Reviewed in the United States on September 19, 2024
Size: 1 PackVerified Purchase
a good value for the money
Reviewed in the United States on June 1, 2023
Size: 1 PackVerified Purchase
bought this battery to replace the battery in a cyber-power U.P.S. at less than $20 it worked great. interestingly, it was rated the same 3.5 amps as my old battery, but 1/3 larger. either the old battery was over-rated, or this one is under-rated. remember, how LONG a U.P.S. will work is dependent on the size of the battery. a 3.5 amp battery provides a total of 40 watts (for 1 hour). so if the item you are protecting draws that, you will get 1 hr of protection MAXIMUM. 400 watt load, 1/10 of that (6 minutes!). mine protected a router, modem, and wire-less phone. it was probably too-small to really do that job. i have since replaced it with a larger U.P.S. (with a 9 amp battery, providing 100 watts of total power (2 and 1/2 times the power of my original U.P.S.), and re-purposed my old U.P.S. to protect a single Tivo box (1 amp draw=120 watts=20 minutes of back up MAXIMUM. most U.P.S.'s are over-sold, and can't produce nearly the protection they advertise.
3 people found this helpful
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Reviewed in the United States on July 29, 2023
Size: 1 PackVerified Purchase
I was replacing the battery for a very old APC Back-UPS 350 that was 10+ years old. The original battery was labeled "Genuine RBC for APC by Schneider". The plastic casing of the original was embossed as MJ07AB.

The replacement battery was adequate to do the job , but there were two deficits.

First, the battery case was over-sized in one dimension making it difficult to reinstall the slide-in plastic cover. I was able force the cover back in place, thereby deflecting the cover slightly when installed. Slightly awkward, but it worked.

Secondly, the fast-on battery male tabs were slightly smaller than the original battery. Hence the female connectors (as part of the original case and circuitry) were a bit over-sized. These were installed (having a very tight fit- a good thing), and in my opinion will be adequate for the intended circuitry.

(Now where and how do I disposed of the old, sealed lead-acid battery?)

Ah, yes the following day ...Staples came to the rescue and was able to recycle my old battery. I send them thank you's, and of course we can patronize them too!
4 people found this helpful
Report
Reviewed in the United States on July 24, 2024
Size: 1 PackVerified Purchase
Only had it a short while, but so far, so good. It fit perfectly into the apc housing
Reviewed in the United States on May 22, 2024
Size: 1 PackVerified Purchase
3 minute install. No issues. First outage and the battery did last for about 40 minutes for my modem and router.
Reviewed in the United States on June 29, 2024
Size: 2 PackVerified Purchase
I bought two of these, in advance of the current batteries dying.
The batteries stayed good for a while but when I tried to use the new ones, they both were unusable.
They had no shelp life.
I am way outside the window for returning them and will probablly take them to the local dump for recycling.
A total waste of money. Buying from APC will cost way more than these but I will be certain the quality of replacements will be tops.
One person found this helpful
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Reviewed in the United States on July 11, 2015
Size: 1 PackVerified Purchase
Great value. Local retail store was twice the price. Twice. Mine was not unmarked as in the photo but looks like similar product with UB1234k printed in white on the side. Fit was perfect.

Make sure to measure your old battery and get one with the same dimensions. Also, keep in mind that the height measurement provided on Amazon includes the height of the connectors, not the body of the battery alone. So there could be a little variation there. Make sure you measure the height of your old battery both ways. The dimension given for height for this battery of 2.64 inches includes the height of the connectors!

Don't be afraid to peal the APC label off your old battery to look for additional information. This was moderately helpful for me. See photos of my old battery with and without the label. The manufacturer name - Long, and the code WP3-12, which 3 amps 12 volts, are helpful shopping and ensuring you are getting the right model.

Very pleased and if it lasts a few years it will prove to be a great buy.

Mine arrived wrapped in bubble wrap inside a padded plastic envelope which had been folded over and taped tight around the battery. It was in excellent condition but I can certainly see how, given the weight of the item, damage could occur if it is dropped or handled roughly during transport. A cardboard box with padding inside would definitely be better protection, but I had no issues with condition on arrival and it was an easy matter to slice off the padding with my pocketknife.

Similarly, I had no issues with the fit of the tabs on the battery with the connectors on my APC unit. The tabs on the new battery were a bit smaller but fit tightly inside the connectors first time with no finagling necessary.

Orientation of the battery in the battery compartment is a little odd. Try to note - or photograph with your phone - how the old battery is in the compartment. To my mind, the battery goes in sideways on my model APC. But this is definitely something you can figure out in ten seconds through trial and error, which is what I did. See photo.

Good luck. Highly recommended.
Customer image
5.0 out of 5 stars Great bargain. Just be sure to measure first so you get the right model for your APC.
Reviewed in the United States on July 11, 2015
Great value. Local retail store was twice the price. Twice. Mine was not unmarked as in the photo but looks like similar product with UB1234k printed in white on the side. Fit was perfect.

Make sure to measure your old battery and get one with the same dimensions. Also, keep in mind that the height measurement provided on Amazon includes the height of the connectors, not the body of the battery alone. So there could be a little variation there. Make sure you measure the height of your old battery both ways. The dimension given for height for this battery of 2.64 inches includes the height of the connectors!

Don't be afraid to peal the APC label off your old battery to look for additional information. This was moderately helpful for me. See photos of my old battery with and without the label. The manufacturer name - Long, and the code WP3-12, which 3 amps 12 volts, are helpful shopping and ensuring you are getting the right model.

Very pleased and if it lasts a few years it will prove to be a great buy.

Mine arrived wrapped in bubble wrap inside a padded plastic envelope which had been folded over and taped tight around the battery. It was in excellent condition but I can certainly see how, given the weight of the item, damage could occur if it is dropped or handled roughly during transport. A cardboard box with padding inside would definitely be better protection, but I had no issues with condition on arrival and it was an easy matter to slice off the padding with my pocketknife.

Similarly, I had no issues with the fit of the tabs on the battery with the connectors on my APC unit. The tabs on the new battery were a bit smaller but fit tightly inside the connectors first time with no finagling necessary.

Orientation of the battery in the battery compartment is a little odd. Try to note - or photograph with your phone - how the old battery is in the compartment. To my mind, the battery goes in sideways on my model APC. But this is definitely something you can figure out in ten seconds through trial and error, which is what I did. See photo.

Good luck. Highly recommended.
Images in this review
Customer image Customer image Customer image
Customer imageCustomer imageCustomer image
26 people found this helpful
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Top reviews from other countries

Woodson
5.0 out of 5 stars Perfect fit. No issue with the product and the ...
Reviewed in Canada on February 3, 2015
Size: 1 PackVerified Purchase
Perfect fit. No issue with the product and the price is right.
Wwefreak666
5.0 out of 5 stars Good Price; Works.
Reviewed in Canada on December 25, 2014
Size: 1 PackVerified Purchase
Works, does the job.
frandant
5.0 out of 5 stars Plug and play
Reviewed in Canada on March 24, 2013
Size: 1 PackVerified Purchase
Plugged it in and it works perfectly. I am very happy with the purchase. So far, so good. I recommend this battery as a replacement.
O.Milton
4.0 out of 5 stars Four Stars
Reviewed in Canada on September 26, 2014
Size: 1 PackVerified Purchase
no review it works
DaveJ
5.0 out of 5 stars Good battery
Reviewed in Canada on May 27, 2015
Size: 1 PackVerified Purchase
Good quality battery that works well