Rated 4.90 out of 5 based on 20 customer ratings
(20 customer reviews)

$24.99

12V 9AH Replacement Battery for CyberPower RB1290 UPS

SKU: ML9-1294286B Category:
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$24.99
$44.99
$199.99
Delivering power when you need it, the Mighty Max ML9-12 12 Volt 9 AH uses a state of the art, heavy-duty, calcium-alloy grid that provides exceptional performance and service life in both float and cyclic applications.
The ML9-12 is an Absorbent Glass Mat (AGM) technology with a valve regulated design, that can be used in enclosed and indoor environments without leaking or maintenance, providing a superior performance for thousands of models.
Mighty Max SLA batteries are utilized in a wide variety of applications including; Consumer Electronics, Electric Vehicles, Engine Starters, Golf Carts, Hunting, Lawn and Garden Tools, Medical Mobility, Motorcycles, Power sports, Portable Tools, Solar, Toys and Hobby, Access Control Devices, Emergency Lighting, Security and more.
Specifications: 
Voltage: 12 Volt
Amperage: 9 AH
Chemistry: SLA, AGM
Terminal: F2
Battery Dimensions: 
5.94 in x 2.56 in x 4.02 in
Weight: 5.10 Lbs
Warranty
1 Year
Multi Packs Bundled Savings

1 Pack, 2 Pack, 10 Pack

20 reviews for 12V 9AH Replacement Battery for CyberPower RB1290 UPS

  1. Rated 5 out of 5

    Leonid I. (verified owner)

  2. Rated 5 out of 5

    M. Kauffman

    This is a plug in replacement for the battery in my UPS. Less than half of what the OEM wanted.

  3. Rated 5 out of 5

    Stephen D. Ward

    When I originally installed AT&T internet, it came with a small UPS back-up battery. This battery is exactly the one I needed to replace the original. Installs easily and works great.

  4. Rated 5 out of 5

    anthony

    It was listed as fit for a dr chipper but it was smaller than the original but even though it was smaller it works fine

  5. Rated 5 out of 5

    roy m painter

    It was what I needed and works good

  6. Rated 4 out of 5

    Fred E.

    I got this to replace the battery in my Monster Rocking Roller Speaker, it was a fight to get it back in but it does work.

  7. Rated 5 out of 5

    baker

    I was going to throw my speakers away until I saw that I could get a battery. I ordered 2 and they work better than ever expected!!

  8. Rated 4 out of 5

    Ted T

    good battery but had to wrestle with putting it in my cyberpower computer back up. Leads are backwards

  9. Rated 5 out of 5

    CaptainSportster

    Used to replace a very weak battery in my CyberPower UPS backup. Easy installation. Seems to be working fine. Cannot rate Longevity due to that fact the battery has been installed only a couple of weeks.

  10. Rated 5 out of 5

    Howgold

    The Mighty Max 12V9AH battery is the exact replacement battery for the CyberPower RB1290 battery. And it’s less expensive.

  11. Rated 5 out of 5

    Ilene, the Folks dancer.

    This battery was for the Folks dancers, music system, out in the open space for everyone to enjoy. Where there is no power system available.

  12. Rated 5 out of 5

    Jeremy Noble

    Exactly what I needed.

  13. Rated 5 out of 5

    Garth Luer

    Nothing

  14. Rated 5 out of 5

    Modoc Organ Gig

    Easy to install and was fully charged. My Cyberpower UPS worked perfectly with the replacement battery. The original battery lasted 10 years

  15. Rated 5 out of 5

    Anthony J. Fasy

    Easy to install, lasts a long time, no issues.

  16. Rated 5 out of 5

    JetFan

    Bought 2 of them and it works fine.

  17. Rated 5 out of 5

    J. Sekula

    Worked well for my Cyberpower CP1000PFCLCD. I had to bend the negative terminal a bit to match the angle, and crimp the connector a bit.

  18. Rated 5 out of 5

    Mark Simmons

    Dropped this into a CyberPower CP1000AVRLCD I bought ten years ago to handle a load fault issue, and the problem just went away entirely. Like a brand new unit. Thrilled.

  19. Rated 5 out of 5

    DiosmayaTop Contributor: Woodworking

    Worked perfectly for my UPS, plugged it in and it worked as it is supposed to. It’s been only two weeks, no problems so far. It is more than a year and it keeps working like a charm, perfect battery.

  20. Rated 5 out of 5

    Diosmaya

    Worked perfectly for my UPS, plugged it in and it worked as it is supposed to. It’s been only two weeks, no problems so far.It is more than a year and it keeps working like a charm, perfect battery.

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Excellent
Mighty Max Battery
Based on 4505 reviews
I ordered two Mighty Max ML210-6GC-2, 6 volt SLA AGM batteries for my RV trailer. The order to delivery process, via Amazon, was impressive, 2 days! There clearly was an effort to protect the batteries from damage, but one of the battery boxes was crushed at one of the upper corners. The battery itself had a slightly damaged corner that corresponded with the package damage. Hopefully the battery is okay. I’ll note that the delivery driver also set the one battery upside down….no evidence of any spillage. I really appreciated the quick turnaround, just wished there was more effort to protect the product.
It was mostly charged on arrival. Fired my Cub Cadet right up!
Ordered two pack from Amazon. Arrived in good condition.
Product arrived in a timely manner. Less than 24 hours. It was fully charged when it arrived. It was a perfect fit to the millimeter for my Kawasaki Concours. The bike fired up with virtually no effort when it was installed. Altogether a very good experience from purchase to start up.
Great battery for my General generator ! Easy install !
Good battery,battery was 95% charged on arrival,same size as photo said in listing. Fast shipping but battery could have been packaged alot better. All in all happy and everything is working well.
Perfect fit on my custom VN2000 Rogue
It appears to be working well.
Awesome battery!!! Looks Great, powerful battery. I bought a big name brand battery last year. I had to keep it on the trickle charger after 3 days, because it didn't keep enough power to start my 2003 Kawasaki Nomad 1500cc fuel injected motorcycle. Mighty Max battery is doing great. I am going on vacation and I will see if I can start it when I get back, not gonna even put a charger on it. Have I said how awesome looking the battery is? It looks as good as it performs without breaking the bank.
Amazon says it won’t fit but it’s exactly the same size as original