ML9-12 - 12 Volt 9 AH, F2 Terminal, Rechargeable SLA AGM Battery
ML9-12 - 12 Volt 9 AH, F2 Terminal, Rechargeable SLA AGM Battery
ML9-12 - 12 Volt 9 AH, F2 Terminal, Rechargeable SLA AGM Battery
ML9-12 - 12 Volt 9 AH, F2 Terminal, Rechargeable SLA AGM Battery
ML9-12 - 12 Volt 9 AH, F2 Terminal, Rechargeable SLA AGM Battery
Rated 4.53 out of 5 based on 15 customer ratings
(15 customer reviews)

$24.99

12V 9Ah Compatible Battery for APC BACK-UPS NS1250, NS 1250

SKU: ML9-12106 Category:
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$24.99
$44.99
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$119.99
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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, 4 Pack, 6 Pack, 8 Pack, 10 Pack

15 reviews for 12V 9Ah Compatible Battery for APC BACK-UPS NS1250, NS 1250

  1. Rated 4 out of 5

    Albert B. St Md –

    Was right size worked and less expensive

  2. Rated 5 out of 5

    Meowskers –

    I used this battery to replace a dead one in an APC UPS-550 that I found at Goodwill. It works perfectly. The connectors are the .250 that you need (I saw people complaining on other batteries that had .125 connectors). So far no issues. I will update my review if anything unexpected occurs.

  3. Rated 5 out of 5

    Doug Stone –

    I used this battery to replace a dead one in an APC UPS-550 that I found at Goodwill. It works perfectly. The connectors are the .250 that you need (I saw people complaining on other batteries that had .125 connectors). So far no issues. I will update my review if anything unexpected occurs.

  4. Rated 5 out of 5

    P. Patel –

    Ran a test and worked fine in my APC Back-UPS 1250.

  5. Rated 5 out of 5

    Robert Dockham –

    It fits my APC backup and seems to be working fine

  6. Rated 5 out of 5

    D. Lyman –

    Works great. no problems

  7. Rated 4 out of 5

    Bill in San Jose –

    1 Month so far, all good. Fit my AT&T ONT box perfect, spade lugs are the correct size.

  8. Rated 5 out of 5

    jomebrew –

    It puts out without input. Johnny 5 would struggle without input but not the Mighty Max.

  9. Rated 4 out of 5

    TXShotgun36 –

    Worked as expected

  10. Rated 4 out of 5

    TXShotgun36 –

    Worked as expected

  11. Rated 5 out of 5

    mb#1 –

    My APC Back Up is now back up and running!!!

  12. Rated 5 out of 5

    mb1 –

    My APC Back Up is now back up and running!!!

  13. Rated 4 out of 5

    Mason –

    Silly me. I thought when I bought his 2 would come because that is what is needed. It was only one. So if you get this, make sure if you need 2 get the pair. They seem to work fine.

  14. Rated 3 out of 5

    Thomas Finch –

    Works as expected

  15. Rated 5 out of 5

    Ron Sink –

    Works great. It seems to function just as the original battery did.

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Emjhaye Juan
ML22-12 Gel type and ML22-12 Non Gel type Batteries came in good condition, purchased from Amazon 6/23/26 and arrived the next day packaged really good.
Hal Model
Very well packaged and.arrived as promised
Ryan Scott
Works great!!
David V Garcia
Love the Boost!!! I got newer batteries for my grandchildren and painted this black for my boys
Dennis Moy
It was delivered fast. Good product.
Frank Scarano
Was an excellent fit for my fios wall box. Inexpensive too! Was dealing with a dead battery for years with beeping every few minutes. This fixed it right up and now will keep internet when the power goes out.
Brenda Killips
Shipped as it should have been. Received in good condition.
Thyckcutie 74
This saved my life... Well not my life but... well the battery on my new predator 3500 generator was dead!! I got it on a super duper sale but I didn't open the box for 6 months, when I did I discovered a bad battery 😟. I called them and they wanted double the price I paid for Amazon to deliver it the SAME DAY!! They didn't even carry the battery in their store 🤬. I put it in and just like that, I can run my mobile Italian ice business again! 😆 Thank you mighty max and Amazon for getting me together!!
Debora Wesley
Great battery at a great price. Work really well.
Louis Wing
This might look like a mess of wires, but it's really the backbone of my home's network and more. Everything important to our home security and connectivity relies on steady power that I have on a battery backup.

I just purchased a replacement battery for my UPS and it's a Mighty Max Battery that is working behind the scenes here. This was almost half of the cost of the OEM battery, and it was a perfect fit for the unit.

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