Rated 4.78 out of 5 based on 32 customer ratings
(32 customer reviews)

$17.99

ML5-12 – 12V 5AH Replaces UltraTech SLA Alarm Battery UT1240 ISO9002

SKU: ML5-1265 Category:
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$ 17.99
$ 28.99
$ 39.99
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Delivering power when you need it, the Mighty Max ML5-12 12 Volt 5 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 ML5-12 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: 5 AH
Chemistry: SLA, AGM
Terminal: F1
Battery Dimensions: 
3.58 in x 2.76 in x 4.21 in
Weight: 3.09 Lbs
Warranty 1 Year
Multi Packs Bundled Savings

12 Pack, 1 Pack, 2 Pack, 3 Pack, 4 Pack, 6 Pack, 9 Pack

Volts

12V

Amp Hour

5Ah

Chemistry

SLA / AGM

Quantity

1

Length

3.58

Width

2.76

Height

4.21

Weight

3.09 Lbs

Warranty

1 Year

32 reviews for ML5-12 – 12V 5AH Replaces UltraTech SLA Alarm Battery UT1240 ISO9002

  1. Rated 5 out of 5

    Jesse C.

    Great fit for my Security Alarm

  2. Rated 5 out of 5

    Steven

    Direct replacement for my home security system.

  3. Rated 5 out of 5

    SteveO

    My, now antique, wired alarm needs a battery for back-up power. These batteries need replacing about every 5 years or so – at least that has been my experience. According to the specs this battery is rated for a slightly more max amps but apparently that is OK with the alarm as I unplugged the old battery, plugged this one in (two bayonet connections – just keep the + & – straight) and the alarm is happy again. The battery sits in a large metal box so slight variation in size is OK but this one seems to be (by eyeball) the same size as the old one. (Old one was a UltraTech UT1240, 12V 4.5AH I bought at the local battery store.)Only time (years, hopefully) will tell how this battery stacks up to prior ones in terms of durability.

  4. Rated 4 out of 5

    Glenn L. Mattox Jr.

    needed a replacement for our church security system…..this one worked fine…

  5. Rated 5 out of 5

    Rob A

    It fit its place

  6. Rated 5 out of 5

    Rob A

    It fit its place

  7. Rated 5 out of 5

    Judy Craig

    The battery was a great buy a replacement form the security company was over 100.00

  8. Rated 5 out of 5

    kebells

    Excellent! It fits perfectly in my Chamberlain garage door opener and easy to install!

  9. Rated 5 out of 5

    Barbs

    Five Stars

  10. Rated 5 out of 5

    Jeffrey L. Sinclair

    Arrived in a timely fashion. Easy to install. Works great!

  11. Rated 5 out of 5

    MSC

    hoping this last for the warranty period which is longer than most you can find locally. good value. easy to order, and delivered as promised. nice to not have to drive to make special trip to the few motorcycle batteries are available.

  12. Rated 5 out of 5

    Mia

    hoping this last for the warranty period which is longer than most you can find locally. good value. easy to order, and delivered as promised. nice to not have to drive to make special trip to the few motorcycle batteries are available.

  13. Rated 5 out of 5

    R. W.

    As a replacement battery for my home alarm system. It only took 1/2 hour for it to reach full charge and is now running the system as its supposed to do.

  14. Rated 5 out of 5

    genius

    So far so good in the alarm system.

  15. Rated 5 out of 5

    Michael Maurer

    Works exactly as advertised. Couldn’t be more pleased.

  16. Rated 5 out of 5

    A. Cohen

    The battery arrived on time, works great. It does exactly what it’s supposed to do. let’s see how long it lasts.

  17. Rated 5 out of 5

    Aubrey M.

    Different brand name but was same size and terminals. Seems to be working fine.

  18. Rated 5 out of 5

    Jeffrey H. Taylor

    Great battery, far more economical than purchasing locally

  19. Rated 4 out of 5

    My Opinion

    Quick delivery from Mighty Max. Good packaging.Looks OK outside. I have charged it with an external charger (Noco) and installed into security box. Give 4 stars because it is impossible to tell how long it will last which is the main criteria for a battery. I have fios battery that is still operational after 6 years and another one that failed after 4 years.

  20. Rated 5 out of 5

    Pakitullanc

    Arrived today. Swapped it with the dead CPI battery. Works good. Time will tell

  21. Rated 3 out of 5

    Jill D.

    Bought this to back-up my Comcast cable so that my house phones still work during a power outage. Didn’t work. Hard to tell if it’s even charged. There were no instructions with this battery.

  22. Rated 5 out of 5

    Fields

    Battery replacement was an exact size fit and no issues to date. Only time will tell how good a battery replacement really is.

  23. Rated 5 out of 5

    Joel M.

    I loved this battery! It provided me with so much power. It’s so… full of 12 volts that my alarm is happy again when the power goes out. I’ll cherish this battery until it dies, then I’ll recycle it and buy another. Just like that.

  24. Rated 5 out of 5

    HR

    Very good and cheap

  25. Rated 3 out of 5

    Customer

    Charged it on a battery tender, then plugged it in, and it worked. Not much more you can expect or ask for in a battery. We’ll see if it’ll last 5 years.It has made it a couple months tho.

  26. Rated 4 out of 5

    Deb G

    Arrived on time, fit right in, works great. what more can I say about a battery? It does what it’s supposed to do. let’s see how long it lasts.

  27. Rated 5 out of 5

    Mark

    work at advertised. Good value. Plugged right in as a replacement.

  28. Rated 5 out of 5

    Tim

    This was a direct replacement for my Ademco alarm system battery. The dimensions were accurate and the battery arrived before the stated delivery date. Great seller and product.

  29. Rated 5 out of 5

    Francine Galante

    Works with my alarm system

  30. Rated 5 out of 5

    Eugene Godefroid

    Good replacement

  31. Rated 5 out of 5

    cc

    Fast delivery and just the right thing. Will order again when needed. Thank you!

  32. Rated 5 out of 5

    David Duff

    Reasonable price and prompt shipping

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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