Rated 4.80 out of 5 based on 10 customer ratings
(10 customer reviews)

$24.99

12V 9AH SLA Battery Replaces PE12V9 PX12090 UB1290

SKU: ML9-1211611113 Category:
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$ 24.99
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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

10 reviews for 12V 9AH SLA Battery Replaces PE12V9 PX12090 UB1290

  1. Rated 5 out of 5

    jrb1021

    After almost a year of going back and forth with product support from the manufacturer of my electric-start mower, I replaced the battery–and bingo, it started with the first push of the button. It remains to be seen how long it will last, but so far, I’m thrilled.

  2. Rated 5 out of 5

    Barbara

    It’s every bit as good as the original battery.

  3. Rated 5 out of 5

    L. Jarquin

    Quick delivery, good price. Used to replace the battery on a car Jump Starter Vector 300A, same capacity (9AH) but smaller terminal tabs. Same physical size. Had to modify it by drilling holes on the Center of the tabs for 8-32 screws and bend the tabs straight up to attached to the big gauge cables in the jump starter.

  4. Rated 5 out of 5

    L. Jarquin

    Quick delivery, good price.Used to replace the battery on a car Jump StarterVector 300A, same capacity (9AH) but smaller terminal tabs. Same physical size. Had to modify it by drilling holes on the Center of the tabs for 8-32 screws and bend the tabs straight up to attached to the big gauge cables in the jump starter.

  5. Rated 3 out of 5

    Rob Rice

    I chose this battery for the dimensions, so that it would be a direct replacement. Well, it’s about 3 1/2 inches high, not 3.94 inches. So it doesn’t fit correctly and I have to come up with something to take up the extra space. Other than that, it seems to be a good battery. Dimensions are very important to some people, and it’s a simple thing to get right.

  6. Rated 5 out of 5

    Web Customer

    It was a close replacement as it was the same length and width but was a little bit shorter in height.

  7. Rated 5 out of 5

    Customer

    It was a close replacement as it was the same length and width but was a little bit shorter in height.

  8. Rated 5 out of 5

    Web Customer

    Works good

  9. Rated 5 out of 5

    Customer

    Works good

  10. Rated 5 out of 5

    bgc

    Battery arrived ahead of estimated delivery time.It is a perfect fit for CyperPower 1500va UPS. Original battery was down to 18% capacity and provided less than 10 minutes of UPS power. The new one came fully charged and CyberPower console application estimated 58 minutes of runtime during power outage test.

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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