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CyberPower RB1290X2 UPS Replacement Battery Cartridge, Maintenance-Free, User Installable, 12V/9Ah

4.4 4.4 out of 5 stars 293 ratings
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Purchase options and add-ons

Brand CyberPower
Battery Cell Composition Lead Acid
Voltage 12 Volts
Color White
Material Sealed Lead-Acid

About this item

  • The CyberPower RB1290X2 UPS Replacement Battery Cartridge restores life to CyberPower UPS systems that have weak or completely depleted internal batteries;It comes with two 12V/9Ah sealed lead-acid batteries
  • SEALED LEAD-ACID BATTERIES: Supplies high surge currents, provides robust power-to-weight ratios, and cost effective; MAINTENANCE-FREE BATTERY FLUID: Never requires replacement
  • USER-INSTALLABLE CARTRIDGE: Allows for quick and convenient installation; each cartridge is pre-assembled; The RB1290X2 comes in reusable packaging for delivering expired batteries to recycling centers
  • Compatible with these CyberPower models: BRG1350AVRLCD, BRG1500AVRLCD, LX1500GU, CP1350AVRLCD, CP1500AVRLCD, CST150XLU
  • 18-MONTH WARRANTY: Covers defects in materials and worksmanship in the product under normal use and conditions within eighteen months of the purchase date

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Top Brand: CyberPower

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From the manufacturer

Replacement Battery

RB1290X2


The RB1290X2 UPS Replacement Battery Cartridge restores life to CyberPower UPS systems that have weak or completely depleted internal batteries. The RB1290X2 contains two 12V/9AH batteries. It is a leak-proof, sealed lead-acid battery that never requires replacement fluid.

UPS Compatibility

BRG1350AVRLCD, BRG1500AVRLCD, CP1350AVRLCD, CP1500AVRLCD

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

Best Practices for Replacement Batteries

  • Install the UPS in a suitable environment, within specified operating conditions (temperature, humidity, etc.).
  • Record the installation date (some UPS models feature a Battery Replacement date that can be set in the configuration menu)
  • Do not overload the UPS Battery supported outlets with too much-connected equipment, expressed as Watts.
  • Regularly perform a Battery Self-Test
  • Replace batteries proactively between 3-5 years

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CyberPower RB1290X2 UPS Replacement Battery Cartridge, Maintenance-Free, User Installable, 12V/9Ah
CyberPower RB1290X2 UPS Replacement Battery Cartridge, Maintenance-Free, User Installable, 12V/9Ah
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Price$96.81-10% $189.95
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CyberPower RB1290X2 UPS Replacement Battery Cartridge, Maintenance-Free, User Installable, 12V/9Ah


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Product Description

The RB1290X2 UPS Replacement Battery Cartridge restores life to CyberPower UPS systems that have weak or completely depleted internal batteries. The RB1290X2 contains two 12V/9AH batteries, certified to meet or exceed original manufacturer specifications. This leak-proof, sealed lead-acid battery never requires replacement fluid. The pre-assembled cartridge installs easily into your CyberPower UPS system and is shipped with reusable packaging for delivering expired batteries to a suitable recycling center. The RB1290X2 comes with instructions, recycling information, and an eighteen-month warranty. UPS Compatibility: BRG1350AVRLCD, BRG1500AVRLCD, LX1500GU, CP1350AVRLCD, CP1500AVRLCD, CST150XLU.

Product guides and documents

Customer reviews

4.4 out of 5 stars
293 global ratings

Customers say

Customers like the ease of installation, functionality, and value of the product. They mention it works great, is cheaper than buying a whole new unit, and appreciate the fit. However, some customers have mixed opinions on the battery life and ease of replacement.

AI-generated from the text of customer reviews

24 customers mention "Ease of installation"19 positive5 negative

Customers find the installation of the uninterruptible power supply easy. They mention the instructions are okay but not as good as those from APC. However, they say the replacement goes smoothly and finding out which batteries you need is very easy.

"...It's very straightforward... One word of caution is that these are live batteries, so whatever you do, don't touch both of the parts where we..." Read more

"...received this replacement set of two battery cells I found installation straightforward and all looks good...." Read more

"...Worked fine up until then though, so I guess that's nice. Replacement was easy. I guess it has to be if it's going to happen so frequently." Read more

"...Also comes with very detailed installation instructions that other batteries don't have. Right down to specific models...." Read more

12 customers mention "Functionality"12 positive0 negative

Customers are satisfied with the functionality of the product. They mention it works great, is a direct replacement to originals, and the backup works just like it should. Some say it has about 45 minutes of battery time.

"Works fine" Read more

"...I tested them with everything powered on, and the UPS backup worked just like it should. Showed about 45 min of battery time...." Read more

"...They are OEM and seem to be working fine. The product arrived on time and was undamaged" Read more

"...These new batteries were relatively easy to install, and did the job." Read more

5 customers mention "Value for money"5 positive0 negative

Customers appreciate the value for money of the product. They mention it's cheaper than buying a whole new unit and saves them from buying a new UPS.

"Wasn't sure about ME doing it, BUT I did. No problems. Cheaper than buying a whole NEW unit." Read more

"...This is the second battery replacement. Well worth the money." Read more

"...Saves buying a new UPS." Read more

"easy install, if you have this model, and cheaper than buying new unit...." Read more

4 customers mention "Fit"4 positive0 negative

Customers are satisfied with the fit of the product. They mention it fits perfectly and is easy to install.

"The batteries are designed for my Cyberpower UPS and fit snugly into the box. I charged them up overnight and they were fully charged by the morning...." Read more

"packaging was good. These are heavy. size is perfect fit. Seems to run perfectly." Read more

"It took a very long time to receive, but it fits perfectly and was easy to install. Saves buying a new UPS." Read more

"Batteries fit perfectly and brought my UPS back to life." Read more

7 customers mention "Battery life"4 positive3 negative

Customers have mixed opinions about the battery life of the uninterruptible power supply. Some mention that it has good OEM batteries, while others say they only lasted two years before dying.

"The batteries are great, they even came fully-charged...." Read more

"...It wouldn't turn on at all, it would only do a constant restart cycle. I replaced both batteries with these and the unit is working properly again." Read more

"...Then it's another few years with the peace of mind of clean backup power." Read more

"...However even with no power outages or power surges, batteries only lasted 2 years before dying, not holding a charge." Read more

7 customers mention "Ease of replacement"4 positive3 negative

Customers have mixed opinions about the ease of replacement of the uninterruptible power supply. Some mention it's easy, while others say it's not as easy as other CyberPower units they have changed batteries on.

"...Luckily my models were separated in the units and easier to replace and install. They are OEM and seem to be working fine...." Read more

"...First, it was tricky to find the proper replacement. CP has many different ones for their various UPSs...." Read more

"Worked. No fuss replacement." Read more

"Not as easy to replace as other CyberPower units I've changed batteries on, but fixed my error problem. Still, not too hard to replace." Read more

3 customers mention "Power supply"0 positive3 negative

Customers are dissatisfied with the power supply. They mention it stopped working and would only do a constant restart cycle.

"The CyberPower unit stopped working. It wouldn't turn on at all, it would only do a constant restart cycle...." Read more

"...After installing them however, the UPS will not power on. Wasted nearly $100, non returnable. It's back to APC for me." Read more

"...I ordered them and installed. The unit still does not work. I called back and they said I need a new entire unit...." Read more

Wish I knew how easy it was to replace batteries on these external batteries sooner
5 out of 5 stars
Wish I knew how easy it was to replace batteries on these external batteries sooner
First, I want to say that most people (like myself) are hesitant to try changing their batteries on their own because they are not sure what model of batteries to buy. Also because they think that they are be hard to replace. Well, let me tell you right now that finding out which batteries you need is very easy, and actually replacing them takes no longer than 15 minutes.For people that don't want to read, these replacement batteries is for the CP1500AVRLCD model. Make sure the replacement batteries you get matches the serial number rule below (found this from doing a simple Google Search):RB1290X2 (for serial numbers that begin with “CTH” or “CXE”)RB1280X2A (for serial numbers that begin with “CPT” or “CPA”)Read on below for a much more detailed explanation on what to do if you're feeling hesitant...Let me tell you how to find out what batteries you need. Go do a simple Google search of your system's model. To do this, simply type what you see on the front end of your CyberPower battery. In my case, as seen in the images, I looked up "CyberPower 1500VA AVR". After that, you will come to realize that there aren't much similar batteries they sell, so my model only have one product code (CP1500AVRLCD) so i became sure this was what i have. Now, make sure to take note of your serial number because you are gonna need it to really confirm if the batteries you are getting is correct (check above for more details on this).Once you are sure that these are the batteries you need, then unscrew two screws on the bottom of the system, slide the front panel down... and it should come off. Beware that there is a flat cable that you need to unplug from the front panel first before taking the whole panel out. This is what connects to the screen. After doing so, unscrew the two screws in the middle, and you should be able to unplug the wires, and just pull out the batteries. Unplugging may take a little effort/strength because in my case i really had to pull hard, don't worry.. you won't break them. PLEASE remember which wire goes to where. There are only three wires total, so there shouldn't be any explanation on what to plug where needed. It's very straightforward... One word of caution is that these are live batteries, so whatever you do, don't touch both of the parts where we connect the wires at the same time with metal. It will cause a spark and you'll definitely be scared. But, Its fine to touch them with you hands one by one to be on the safer side. Now, just plop the batteries back into the case (same way how they were initially or look again on my images above to make sure). Screw the middle bracket back, and plug the flat wire back onto the front panel. put the front panel back on and don't forget the two screws you took off initially... Then you're good to go! plug it in and turn it on! Enjoy your fresh batteries, and be proud you saved around $100 for not having to buy a new system entirely!
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Top reviews from the United States

Reviewed in the United States on December 8, 2023
Style: BatteryVerified Purchase
First, I want to say that most people (like myself) are hesitant to try changing their batteries on their own because they are not sure what model of batteries to buy. Also because they think that they are be hard to replace. Well, let me tell you right now that finding out which batteries you need is very easy, and actually replacing them takes no longer than 15 minutes.

For people that don't want to read, these replacement batteries is for the CP1500AVRLCD model. Make sure the replacement batteries you get matches the serial number rule below (found this from doing a simple Google Search):
RB1290X2 (for serial numbers that begin with “CTH” or “CXE”)
RB1280X2A (for serial numbers that begin with “CPT” or “CPA”)

Read on below for a much more detailed explanation on what to do if you're feeling hesitant...

Let me tell you how to find out what batteries you need. Go do a simple Google search of your system's model. To do this, simply type what you see on the front end of your CyberPower battery. In my case, as seen in the images, I looked up "CyberPower 1500VA AVR". After that, you will come to realize that there aren't much similar batteries they sell, so my model only have one product code (CP1500AVRLCD) so i became sure this was what i have. Now, make sure to take note of your serial number because you are gonna need it to really confirm if the batteries you are getting is correct (check above for more details on this).

Once you are sure that these are the batteries you need, then unscrew two screws on the bottom of the system, slide the front panel down... and it should come off. Beware that there is a flat cable that you need to unplug from the front panel first before taking the whole panel out. This is what connects to the screen. After doing so, unscrew the two screws in the middle, and you should be able to unplug the wires, and just pull out the batteries. Unplugging may take a little effort/strength because in my case i really had to pull hard, don't worry.. you won't break them. PLEASE remember which wire goes to where. There are only three wires total, so there shouldn't be any explanation on what to plug where needed. It's very straightforward... One word of caution is that these are live batteries, so whatever you do, don't touch both of the parts where we connect the wires at the same time with metal. It will cause a spark and you'll definitely be scared. But, Its fine to touch them with you hands one by one to be on the safer side. Now, just plop the batteries back into the case (same way how they were initially or look again on my images above to make sure). Screw the middle bracket back, and plug the flat wire back onto the front panel. put the front panel back on and don't forget the two screws you took off initially... Then you're good to go! plug it in and turn it on! Enjoy your fresh batteries, and be proud you saved around $100 for not having to buy a new system entirely!
Customer image
5.0 out of 5 stars Wish I knew how easy it was to replace batteries on these external batteries sooner
Reviewed in the United States on December 8, 2023
First, I want to say that most people (like myself) are hesitant to try changing their batteries on their own because they are not sure what model of batteries to buy. Also because they think that they are be hard to replace. Well, let me tell you right now that finding out which batteries you need is very easy, and actually replacing them takes no longer than 15 minutes.

For people that don't want to read, these replacement batteries is for the CP1500AVRLCD model. Make sure the replacement batteries you get matches the serial number rule below (found this from doing a simple Google Search):
RB1290X2 (for serial numbers that begin with “CTH” or “CXE”)
RB1280X2A (for serial numbers that begin with “CPT” or “CPA”)

Read on below for a much more detailed explanation on what to do if you're feeling hesitant...

Let me tell you how to find out what batteries you need. Go do a simple Google search of your system's model. To do this, simply type what you see on the front end of your CyberPower battery. In my case, as seen in the images, I looked up "CyberPower 1500VA AVR". After that, you will come to realize that there aren't much similar batteries they sell, so my model only have one product code (CP1500AVRLCD) so i became sure this was what i have. Now, make sure to take note of your serial number because you are gonna need it to really confirm if the batteries you are getting is correct (check above for more details on this).

Once you are sure that these are the batteries you need, then unscrew two screws on the bottom of the system, slide the front panel down... and it should come off. Beware that there is a flat cable that you need to unplug from the front panel first before taking the whole panel out. This is what connects to the screen. After doing so, unscrew the two screws in the middle, and you should be able to unplug the wires, and just pull out the batteries. Unplugging may take a little effort/strength because in my case i really had to pull hard, don't worry.. you won't break them. PLEASE remember which wire goes to where. There are only three wires total, so there shouldn't be any explanation on what to plug where needed. It's very straightforward... One word of caution is that these are live batteries, so whatever you do, don't touch both of the parts where we connect the wires at the same time with metal. It will cause a spark and you'll definitely be scared. But, Its fine to touch them with you hands one by one to be on the safer side. Now, just plop the batteries back into the case (same way how they were initially or look again on my images above to make sure). Screw the middle bracket back, and plug the flat wire back onto the front panel. put the front panel back on and don't forget the two screws you took off initially... Then you're good to go! plug it in and turn it on! Enjoy your fresh batteries, and be proud you saved around $100 for not having to buy a new system entirely!
Images in this review
Customer image Customer image
Customer imageCustomer image
11 people found this helpful
Report
Reviewed in the United States on October 10, 2024
Style: BatteryVerified Purchase
The batteries are designed for my Cyberpower UPS and fit snugly into the box. I charged them up overnight and they were fully charged by the morning. I run my Mac mini, external drives and one monitor on the UPS and this ensures that I don't stress the batteries and when power goes out I have a fully operational computer setup. The previous batteries lasted about 9 years before losing their ability to charge.
Customer image
5.0 out of 5 stars Fit very well, working very well also
Reviewed in the United States on October 10, 2024
The batteries are designed for my Cyberpower UPS and fit snugly into the box. I charged them up overnight and they were fully charged by the morning. I run my Mac mini, external drives and one monitor on the UPS and this ensures that I don't stress the batteries and when power goes out I have a fully operational computer setup. The previous batteries lasted about 9 years before losing their ability to charge.
Images in this review
Customer image
Customer image
Reviewed in the United States on November 8, 2024
Style: BatteryVerified Purchase
The CyberPower unit stopped working. It wouldn't turn on at all, it would only do a constant restart cycle. I replaced both batteries with these and the unit is working properly again.
Reviewed in the United States on November 25, 2024
Style: BatteryVerified Purchase
Works fine
Reviewed in the United States on August 9, 2024
Style: BatteryVerified Purchase
My Cyber Power model CP1500AVRLCD is about 7 years old and the original batteries started to not hold a charge a few weeks ago. I ordered this set of 2 Cyber Power batteries. Taking the old ones out and installing the new ones took about 15 min total. The date on them is from November 2023, so was 8 months old when I got it in July. The display showed them with 80% charge. After charging overnight, I tested them with everything powered on, and the UPS backup worked just like it should. Showed about 45 min of battery time. The price is a bit high, but should last about 5 years on average.
Reviewed in the United States on August 2, 2024
Style: BatteryVerified Purchase
My CP1500AVRLCD wouldn't work when the power went out, which was understandable since the UPS was several years old, but it still turned on when power was restored. I figured I would save some money and just replace the batteries. After installing them however, the UPS will not power on. Wasted nearly $100, non returnable. It's back to APC for me.
Reviewed in the United States on May 30, 2023
Style: BatteryVerified Purchase
I have had my CyberPower UPS for 7 years, and was long past due to replace the battery. Once I received this replacement set of two battery cells I found installation straightforward and all looks good.

BUT, I had difficulty getting this product. First, it was tricky to find the proper replacement. CP has many different ones for their various UPSs. At first I simply googled for replacements for my UPS model number. This led to a variety of different part numbers, and it wasn't clear if they differed in a significant way.

Finally I went on the CP site and chatted with their support people. They referred to their battery replacement tool. That needed the serial number of my UPS, which is hard to get at when the UPS is in use. Eventually I had the exact model number, and the CP web page giving this had links to suppliers.

But then when I clicked through to those links every one of them (including Amazon) was out of stock. I checked back periodically. It took over two months before they showed up in stock on Amazon. So I quickly ordered. Everything went quickly after that.

Note that there are generic alternatives to the CP branded batteries. But because of the possible confusion of what is a compatible battery I elected to play it safe and stick with a CP branded battery.
2 people found this helpful
Report
Reviewed in the United States on April 25, 2024
Style: BatteryVerified Purchase
Took a little extra time trying to replace the batteries inside the casing due to correctly identifying the model number of the UPS. Once that was resolved, the process of replacing the battery was clear cut with the directions provided by the manufacturer. I would recommend taking photos of the batteries and the connections prior to removing the batteries from the wires. This tip is provided just in case you are not familiar with the process and will save you a lot of stress on where things go. So far so good and while the battery replacement from CyberPower is priced much higher than some genic brands, I like the peace of mind knowing this is the correct battery. Did not rate the “WiFi Signal” feature, since I have no idea how that feature applies to replacing the battery. Note: You will need two (2) batteries, which are provided in the package. Do not purchase twice, otherwise you will end up with four (4) batteries, and they are not returnable items.
Customer image
5.0 out of 5 stars OEM Battery Replacement
Reviewed in the United States on April 25, 2024
Took a little extra time trying to replace the batteries inside the casing due to correctly identifying the model number of the UPS. Once that was resolved, the process of replacing the battery was clear cut with the directions provided by the manufacturer. I would recommend taking photos of the batteries and the connections prior to removing the batteries from the wires. This tip is provided just in case you are not familiar with the process and will save you a lot of stress on where things go. So far so good and while the battery replacement from CyberPower is priced much higher than some genic brands, I like the peace of mind knowing this is the correct battery. Did not rate the “WiFi Signal” feature, since I have no idea how that feature applies to replacing the battery. Note: You will need two (2) batteries, which are provided in the package. Do not purchase twice, otherwise you will end up with four (4) batteries, and they are not returnable items.
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Top reviews from other countries

Ian F. Darwin
5.0 out of 5 stars It just works!
Reviewed in Canada on May 1, 2024
Style: BatteryVerified Purchase
Follow directions and it installs just fine. Solved the "ups shutting off at random" problem - has been running for a couple of months without a glitch since I installed the new battery.
BTW: Most UPS deaths are fixable just by changing the battery, not by throwing the whole thing into landfill!
Mark T.
5.0 out of 5 stars It's working again!
Reviewed in Canada on March 3, 2021
Style: BatteryVerified Purchase
My CyberPower LX1500GU seemed to have dead batteries, given the Self Test button in the CyberPower personal edition of the software caused everything to power off! Yet, batteries were listed as fully charged, etc. etc. when it was powered back up.

After removing the old batteries, shaking them sounded like a maraca! Yes, I failed to test regularly and these were the original batteries. This time the Self Test button actually worked after replacing. It was also handy that these came charged!

The only difficulty was one connector took a while to disconnect. I was worried about ruining the connector. and wire. But connecting the new batteries back up was easy.
BDeschen
5.0 out of 5 stars Replacement batteries for Cyberpower
Reviewed in Canada on November 7, 2024
Style: BatteryVerified Purchase
Bought these batteries as replacements for my UPS LG1500. Easy to install and works very well. Did a few tests. Happy with my purchase.
L B C
5.0 out of 5 stars The replacement I needed
Reviewed in Canada on September 6, 2024
Style: BatteryVerified Purchase
Good price faster than local suppliers who don’t stock
Mordy
1.0 out of 5 stars DOA - No Returns
Reviewed in Canada on July 29, 2024
Style: BatteryVerified Purchase
Like title says. DOA and seemingly no returns allowed.

I dislike the Cyberpower brand. Lots of issues, too many times.

Avoid.