Rated 5.00 out of 5 based on 22 customer ratings
(22 customer reviews)

$39.99

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

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1 Pack $39.99
2 Pack $79.99
4 Pack $159.99
Delivering power when you need it, the Mighty Max ML18-12XRP 12 Volt 18 AH with Reverse Polarity 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 ML18-12XRP 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

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

  1. Rated 5 out of 5

    C D (verified owner)

    I’ve been buying all my gels from Mighty Max for years now. They perform perfectly over a more than adequate service life, come with a very fair warranty, and the company is very motivated to honor it.

  2. Rated 5 out of 5

    Jeffery (verified owner)

    Was a perfect fit and works very well in my generator. Quick shipping, good price and customer service is unbeatable. A number 1.

  3. Rated 5 out of 5

    Anthony (verified owner)

    Fast shipping, fits perfect as a Generac replacement.

  4. Rated 5 out of 5

    Douglas T. (verified owner)

    Battery was exactly what I needed and was delivered quickly. Thank you Mighty Max!

  5. Rated 5 out of 5

    Jim (verified owner)

    Good price. Great shipping. Arrived when it was scheduled. Charged up and works great.

  6. Rated 5 out of 5

    Thomas Izbicki (verified owner)

    It came quickly and so far, works well.

  7. Rated 5 out of 5

    Anonymous (verified owner)

    Delivered on time. A perfect fit for my Generac generator.

  8. Rated 5 out of 5

    Michael Diamond

    This fit my Briggs & Stratton Elite series generator perfectly.

  9. Rated 5 out of 5

    Rob Beam

    Perfect match. Easy installation.

  10. Rated 5 out of 5

    Anthony

    I can’t speak to longevity because I just got it, but arrived within a couple of days, fit perfectly into my Troy-built XP 700W generator, and fired right up. Seems to have the same cranking power as my original OEM. Great value for the $; unless of course it dies within a year or two. NOTE! When ordering, pay close attention to the orientation of your POS & NEG terminals. It’s not hard to mess up, order the wrong one and your cables will not reach. This reverse polarity has the POS on the LEFT. Worked perfectly for my machine.

  11. Rated 5 out of 5

    Kindle Customer

    Great item.

  12. Rated 5 out of 5

    Jack D

    Perfect replacement for a 10 year old generator. Fit exactly where the old battery was.

  13. Rated 5 out of 5

    Web Customer

    For my portable generator I like that the battery fit as it should it made the installation very easy

  14. Rated 5 out of 5

    Customer

    For my portable generator I like that the battery fit as it should it made the installation very easy

  15. Rated 5 out of 5

    SunshineAC

    Just as needed. Came with needed fasteners.

  16. Rated 5 out of 5

    Larry M.

    After 4 years the battery in my Troy-Bilt generator finally died. I found this battery on and it fit just the same as the OEM battery. The only issue I had was not the fault of the battery, but of the installation of the battery. I had several scraped knuckles before I got it installed. After the installation was complete it started on first push of the starter button. 2 thumbs up for this battery!

  17. Rated 5 out of 5

    Bill S

    Only had it for a month so far it’s fine

  18. Rated 5 out of 5

    frog

    Works great for my generator

  19. Rated 5 out of 5

    88gtman

    Item as described! Bought for our generator. Hooked it up and it cranked generator with no problem.

  20. Rated 5 out of 5

    88gtman

    Item as described! Bought for our generator. Hooked it up and it cranked generator with no problem.

  21. Rated 5 out of 5

    Joey

    Excellent Battery, running a 10000 Watts generator, no problem.

  22. Rated 5 out of 5

    Joey

    Excellent Battery, running a 10000 Watts generator, no problem.

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Excellent
Mighty Max Battery
Based on 4564 reviews
Purchased the Mighty Max 12v 10 Amp hr YTX12-BS. Amazon said it would fit my 2012 Kawasaki Ninja 650. It fits in the spot size wise but it's too tall and won't let the seat safely fasten. I have to return the battery unfortunately. It was a really nice battery and priced well.
Simple ordering, delivery, and installation. Performed as advertised.
Bought for my sons 2023 Kayo Fox 70cc quad. Works very well so far. Fit great as well.
Great battery for an even better price. Don’t waste your time going to the big box stores. Just order the Mighty Max from Amazon. Easy install and perfect fit. Fired right up with no issues.
He comprado una batería para el auto de mi niño ya deseo probarla y ver contento a mi bb
He comprado la batería migrhymax modelo ML5-12 de 12v y 5 amp y todo me llegó bien ya no veo la hora de probarlo en el auto de mi niño la amara
Arrived in excellent shape inside an outer layer of cardboard. Pleasant transaction
Battery shipped fast and arrived next day. Well made construction. No complaints yet.
Reasonable price with fast delivery to keep our generator in service for emergencies.
Old batteries and New batteries installed. Very heavy. Charging them up now for tomorrow's mowing. I'll let you know if everything goes well.

Update 6/9/2022
Batteries charged up nicely and have without fail have run up to 2 hours work time and are doing fine.