Rated 4.75 out of 5 based on 12 customer ratings
(12 customer reviews)

$39.99

ML18-12INT – 12 Volt 18 AH, Internal Thread (INT) Terminal, Rechargeable SLA AGM Battery

SKU: ML18-12INT Category: Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,
Thumbnail Short Description Price Add to Cart Button
1 Pack $ 39.99
2 Pack $ 79.99
4 Pack $ 159.99
Delivering power when you need it, the Mighty Max ML18-12 Internal Thread 12 Volt 18 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 ML18-12 Internal Thread 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: 18 AH
Chemistry: SLA, AGM
Terminal: Internal Thread
Battery Dimensions:
7.13 in x 3.01 in x 6.57 in
Weight: 11.90 Lbs
Warranty
1 Year
Multi Packs Bundled Savings

1 Pack, 2 Pack, 4 Pack

12 reviews for ML18-12INT – 12 Volt 18 AH, Internal Thread (INT) Terminal, Rechargeable SLA AGM Battery

  1. Rated 5 out of 5

    FRANK GALLAGHER (verified owner)

    Great Service, great price.

  2. Rated 5 out of 5

    Timothy Ellis

    Great product

  3. Rated 5 out of 5

    J. M.

    This is the second one of these that I have purchased for use in my experimental homebuilt airplane. The originally intended battery which retails for $100+ more than this one is the PC-680. This is a drop in replacement for the PC-680. Has never failed to briskly start my Lycoming 4 cylinder 180 HP engine. I have dual alternators installed so once the engine is running I don’t really care what happens to the battery. If I only had one alternator and needed to rely on the battery for back up power if that single alternator ever failed, well then I might find value in spending 3x’s the price for a battery with a better pedigree. At this price it makes sense to simply replace the battery every year or 2 before the performance starts to get soft, I always have an almost new battery installed.

  4. Rated 4 out of 5

    jake harris (verified owner)

    fast delivery just use some one besides fedex for delivery box was tore up batt. still looked ok

  5. Rated 5 out of 5

    Richard Beltran

    Great product, easy swap, so far keeps charge and has worked out for me. Happy!

  6. Rated 5 out of 5

    RT

    Haven’t had it long enough to say much about it

  7. Rated 3 out of 5

    Gregg

    This was the exact part number of the battery in my Troy-Bilt generator but the positive and negative were switched I had to put new cables on the generator to make it work I cannot rate the longevity because I’ve only had it a couple of weeks

  8. Rated 5 out of 5

    EZeek

    I like the top screw down post so I only have to use a screwdriver to attach terminals. It is much easier than attaching with a bolt and nut.

  9. Rated 5 out of 5

    Juan

    Muibien

  10. Rated 5 out of 5

    ABWill

    Ordered this battery to replace a bad one in a jump box. It worked perfectly. No complaints

  11. Rated 5 out of 5

    Web Customer

    Second one I have purchased very good product at half the cost of other batteries

  12. Rated 5 out of 5

    Customer

    Second one I have purchased very good product at half the cost of other batteries

Only logged in customers who have purchased this product may leave a review.

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