Rated 4.71 out of 5 based on 24 customer ratings
(24 customer reviews)

$24.99

12V 9AH SLA Replacement Battery for HR-1234W-F2

SKU: ML9-121010 Category:
Thumbnail Short Description Price Add to Cart Button
$ 24.99
$ 84.99
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, 4 Pack

24 reviews for 12V 9AH SLA Replacement Battery for HR-1234W-F2

  1. Rated 5 out of 5

    Cape Cod Video Memories (verified owner)

    This battery is for my UPS systems for my computer and I do have to replace them in a period of 4 to 5 years to get the extension of time if the power goes out and they work great

  2. Rated 3 out of 5

    Bob

    Lasted just as long as the warranty

  3. Rated 5 out of 5

    James washington

    I had a problem charging this battery when I first got it and gave it a bad review. I bought a new charger and made a new attempt and it charged 100%. The old chargers still work on other batteries. I’m not sure why they didn’t work on this battery. The Mighty Max is working fine. Its been recharged a few times.

  4. Rated 5 out of 5

    LaWanda & TV

    It worked as expected

  5. Rated 5 out of 5

    Bob

    I needed 3 of these for a UPS that I have on my Pellet Stove. Here in NE Pa, it was cold, and if my power dropped off, this will keep me going for some time. Enjoy!

  6. Rated 5 out of 5

    Livermore Guy

    Much better than buying a new ups.

  7. Rated 5 out of 5

    Terry

    I used these two batteries in a Computer backup unit. The work great and fit very well.

  8. Rated 5 out of 5

    RICHARD BROOKS

    it works

  9. Rated 5 out of 5

    Chip

    I am a repeat customer. The Mighty Max Battery have performed flawlessly in multiple UPS units.

  10. Rated 5 out of 5

    Yak Driver

    I used this battery set to replace in my ups system. Works perfect and a good price.

  11. Rated 5 out of 5

    steve christensen

    great battery and quick servicethank you

  12. Rated 1 out of 5

    Steve Rouland

    Battery fit my application for APC Back-UPS ES 550VA and was easy to install. I was surprised that the battery needed replacement in less than 2 years.

  13. Rated 5 out of 5

    Acceptable Deviation from Perfect

    I was up and running within five minutes of opening the box. Was precharged to 80% according to my UPS, and it’s been working as expected since. I have never had the power off more than a couple/few minutes so I can’t attest as to how well it keep it’s charge. All in all I am very happy.

  14. Rated 5 out of 5

    E. Gaumann

    Fits in to and works perfectly as a replacement battery in my Cyberpower device.

  15. Rated 5 out of 5

    rich greiner

    Fit exactly as original . shipped well . received fully charged , pricing was good .

  16. Rated 5 out of 5

    Randy I

    The 2 Batteries I purchased, restored my UPS system (as new). They are an exact fit. I will purchase again when the need arises. I recommend these batteries.

  17. Rated 5 out of 5

    Cortnie

    Just what I needed. Nothing more, nothing less.

  18. Rated 5 out of 5

    Bill

    Replaced a dead battery out of a old Cyberpower 1500VA UPS, works OK so far, we will see how long it lasts. Original battery made it about 3 years. This battery was installed Dec 2017 and is still OK as of Mar 2018, so far so good.Update: I bought another of these batteries for a different UPS. Battery arrived 3 days after order which is excellent. Installed it on 3-31-2018 and we will see how long it lasts.Update July 2020: The battery installed in tje UPS (A Tripp Lite G1000UB) in March 2018 has gone bad, only got 2 years 3 month of service out of it.

  19. Rated 5 out of 5

    Cristobal R. Garcia

    Good

  20. Rated 4 out of 5

    John S

    The battery was a replacement for an uninterrupted power supply. No problems with fit and connection. Price was reasonable.

  21. Rated 5 out of 5

    nCubed

    Purchased this battery as a replacement for a dead UPS battery (CyberPower CP850AVRLCD Intelligent LCD UPS 850VA 510W AVR Mini-Tower; replacement for model RB1280A). Installed without issue. Runs perfectly. No issues whatsoever. Great to know that Might Max batteries can be used to replace UPS batteries that will inevitability fail after a few years. Why pay for a new UPS when you can simply replace the battery for around 20 bucks? And nearly half the cost of a replacement battery from the manufacturer?

  22. Rated 5 out of 5

    nCubed

    Purchased this battery as a replacement for a dead UPS battery (CyberPower CP850AVRLCD Intelligent LCD UPS 850VA 510W AVR Mini-Tower; replacement for model RB1280A).Installed without issue. Runs perfectly. No issues whatsoever.Great to know that Might Max batteries can be used to replace UPS batteries that will inevitability fail after a few years. Why pay for a new UPS when you can simply replace the battery for around 20 bucks? And nearly half the cost of a replacement battery from the manufacturer?

  23. Rated 5 out of 5

    craig

    I have not tested these as far as the 9 AH capacity compared to the typical 7.5 AH battery of the same size, however, they came quickly and price is right. Plus they came directly from the manufacturer so they still had a good amount of charge on them and likely weren’t sitting on a shelf for a long time.Also, the description is inaccurate with regard to the terminal type. These came with F2 terminals (which makes sense based on the item number of HR-1234W-F2). NOT the F1 terminals mentioned in the description. I actually needed F2, so this worked great in my UPS.

  24. Rated 5 out of 5

    Mad_Scientist

    Good price and shipping was quicker than stated.

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Excellent
Mighty Max Battery
Based on 3474 reviews
Arrived quickly. Even got a sticker with it.
Solid looking battery, came well packaged. Have used their battery before for my lawnmower and now looking forward to see how it lasts in my snowmobile.
I can't believe it less than 48hrs since I ordered from Walmart and it's in the machine. What more can I say except great price.
Thanks Larry
Item as described and perfect fit and arrived on time
Battery arrived in a good shape package strait to my door steps
Arrived just in time to power my generator here in the cold Maine winters. Excellent service!
Arrived quickly from WALMART.COM. Perfect size and proper placement in my generator. Installation was easy. Generator fired right up. Battery came fully charged.
New battery. Ready for cold weather!
So far these Might Max batteries are good but it’s only the first day and they were on charge for 12 hrs. I’ll have to come back and do an update at some point in time. Ordered them on Amazon and got them the next day. I was encouraged by Mighty Max to make this google review and post pictures to extend my warranty for 3 months but there is no way to post pictures 🤣🤣🤣 It’s been a few months and I was able to go back and edit, so here is a video I made, the rest of the photos I have deleted. Batteries are still going strong. Update 12-11-2025
They arrived within 2 days of ordering them packaging was really good I haven't put them in my MX350 yet I hit them with my multi meter fresh out of the box and got 12.4v on both batteries so that is good