(15 customer reviews)


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.
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
1 Year


Amp Hour





.187" – F1










3.20 Lbs


1 Year

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

  1. 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.

  2. Roy

    Great Product

  3. Customer

    Great replacement for my back up battery.

  4. 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.

  5. Kathy

    So glad to get this battery. Works great.

  6. 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!

  7. 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.

  8. BAS

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

  9. Frank J.

    Worked like a charm

  10. James M. Elliott

    As advertised

  11. Ronald M.

    Item exactly as described. Prompt shipping.

  12. M. Fields

    great price vs oem battery for my backup unit.

  13. Ron Boe


  14. Allen L Ehrlich

    Good fit, fast delivery.

  15. Robert N.

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

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