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

$18.99

ML3-12 APC Replacement for Back UPS ES 350 Battery

Availability: In stock

SKU: ML3-1221 Category:
Delivering power when you need it, the Mighty Max ML3-12 12 Volt 3 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 ML3-12 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: 3 AH
Chemistry: SLA, AGM
Terminal: F1
Battery Dimensions: 
5.28 in x 2.64 in x 2.64 in
Weight: 3.20 Lbs
Warranty
1 Year
Volts

12V

Amp Hour

3Ah

Chemistry

SLA / AGM

Terminal

.187" – F1

Quantity

1

Length

5.28

Width

2.64

Height

2.64

Weight

3.20 Lbs

Warranty

1 Year

20 reviews for ML3-12 APC Replacement for Back UPS ES 350 Battery

  1. Rated 5 out of 5

    NTexHiker

    I bought this battery to replace the worn out original in my APC Back Ups ES 350. Fit perfectly, is working like a charm so far. Arrived on time. A great value, it adds life to my original Back Ups purchase.

  2. Rated 5 out of 5

    David

    Slid right in and hooked up just fine.

  3. Rated 5 out of 5

    amy pettit

    great battery, usen in a computer voltage stabilization machine.

  4. Rated 5 out of 5

    Robert Matcham

    At the hospital, many of our blood pressure machines use this type of battery. These are priced very well helping us to keep costs down.

  5. Rated 5 out of 5

    Roy

    Great Product

  6. Rated 5 out of 5

    Web Customer

    Great replacement for my back up battery.

  7. Rated 5 out of 5

    Customer

    Great replacement for my back up battery.

  8. Rated 5 out of 5

    John Tosti

    Replacement battery arrived quickly. It fit perfectly in my APC backup. The first night I had installed the battery, the power went out — Perfect timing. It’s the first replacement battery I’ve purchased. I’ll be buying more.

  9. Rated 5 out of 5

    Kathy

    So glad to get this battery. Works great.

  10. Rated 4 out of 5

    Ryan Davis

    Good to have a new battery every year or two for my APC 350 so my electronics dont fry. I ordered one similar to this that lasted a few years so time will tell. Other than that looks and works like it should!

  11. Rated 4 out of 5

    Ryan

    Good to have a new battery every year or two for my APC 350 so my electronics dont fry. I ordered one similar to this that lasted a few years so time will tell. Other than that looks and works like it should!

  12. Rated 5 out of 5

    Customer

    I have ordered replacement batteries from this company before. I will do so again. Each time, the shipping was very fast, and the batteres fit and worked as described. So far, I have only purchased batteries for my battery back-up units. Never a problem. I would like to see some more advice on their site for not only replacing a battery – but upgrading it. If I could buy a better battery, that would fit, I would. I want the best battery I can get for each battery back-up. I’m not sure if any product deserves 5 stars without several months of testing, but since every battery I have received, fit, was easy to install, and worked – 5 Stars. years ago, I threw out back-up units because the cost of replacing the battery were so high. Not any more! I have purchased batteries directly from them, and through . I think buying through is easier, and if there is an issue, would likely be resolved quicker. I have never had a problem, so I will buy more as needed. Again, product was shipped very fast! Pleased with purchase! I’m giving this same review for all my recent purchases from them.

  13. Rated 5 out of 5

    BAS

    Good battery and a lot better price than what we can get at the store.

  14. Rated 5 out of 5

    Frank J.

    Worked like a charm

  15. Rated 5 out of 5

    James M. Elliott

    As advertised

  16. Rated 5 out of 5

    Ronald M.

    Item exactly as described. Prompt shipping.

  17. Rated 5 out of 5

    M. Fields

    great price vs oem battery for my backup unit.

  18. Rated 5 out of 5

    Ron Boe

    Price

  19. Rated 5 out of 5

    Allen L Ehrlich

    Good fit, fast delivery.

  20. Rated 5 out of 5

    Robert N.

    Dropped into the ES350 as a replacement and works great so far.

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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