Rated 4.87 out of 5 based on 83 customer ratings
(83 customer reviews)

$39.99

ML18-12 – 12V 18AH Rechargeable Battery for Champion Generator 9000 7000

SKU: ML18-122 Category:
Thumbnail Short Description Price Add to Cart Button
$ 39.99
$ 79.99
$ 159.99
Delivering power when you need it, the Mighty Max ML18-12 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 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: Nut and Bolt (NB)
Battery Dimensions:
7.12 in x 3.00 in x 6.50 in
Weight: 11.90 Lbs
Warranty
1 Year
Multi Packs Bundled Savings

1 Pack, 2 Pack, 4 Pack

83 reviews for ML18-12 – 12V 18AH Rechargeable Battery for Champion Generator 9000 7000

  1. Rated 5 out of 5

    STEVE JACOBSON (verified owner)

    all good great battery

  2. Rated 5 out of 5

    Julio Figueroa

    Mi cargador de baterías de carro quedó como nuevo

  3. Rated 5 out of 5

    Web Customer

    This Rechargeable Battery for Champion Generator 9000/7000 is very reliable and fits as expected. The price was excellent.

  4. Rated 4 out of 5

    TMan Services LLC

    The battery arrived well packaged and ready to go. Enclosed was a card to register with the manufacturer and receive three month extended warranty. Their website collected my info but never received the email verification. I also emailed their customer service but no response. The battery works. Most likely it’ll work well past their mfg warranty. Fingers crossed!

  5. Rated 5 out of 5

    George Young

    battery was exact fit and easy to install

  6. Rated 5 out of 5

    lakebandit37

    Great product the best buy for the money I could find

  7. Rated 5 out of 5

    JOHN WILDE

    VERY EASY TO INSTALL. AND STARTED GENERATOR RIGHT UP.

  8. Rated 5 out of 5

    Richard

    This battery is bigger then tyhe one tht came with the generator; yet still fits in the battery space. Works great started the generator on 1st try. Very haapy with this battery. Now lets see how lonf it last.

  9. Rated 5 out of 5

    P

    The battery fit perfectly into the battery tray of the generator. The battery was delivered fully charged. I just replaced a battery that was 9 years old. Hopefully this will last just as long.

  10. Rated 5 out of 5

    George Schiering

    Easy to install, it’s a battery

  11. Rated 5 out of 5

    Ray

    all that was promissed

  12. Rated 5 out of 5

    Jim W

    This battery worked just fine in my Champion 8500 watt generator.

  13. Rated 5 out of 5

    JLo

    This was a perfect fit for my Champion 7500 watt dual fuel generator. Came fully charged, so generator started right up.

  14. Rated 5 out of 5

    Pleasant Johnson

    Generator

  15. Rated 5 out of 5

    Michael Morris

    My 3-4 year old generator remote start battery failed to start the system. This replacement battery installed easily and worked right away.

  16. Rated 5 out of 5

    Susan

    This battery is every bit as good, if not better than the original.

  17. Rated 5 out of 5

    jonbp

    After receipt, a simple install, Battery was charged. The entire process took about 15 minutes. Hit the start button on my generator and up and running! Big thanks, Prompt, quality and great price. Thanks

  18. Rated 5 out of 5

    Phil Gennawey

    Right product, proper fit, great price.

  19. Rated 5 out of 5

    Gary Barnes

    GREAT BATTERY FOR THE PRICE

  20. Rated 5 out of 5

    Kingsley Antwi

    Value for money

  21. Rated 5 out of 5

    Chad Dahlenburg

    This was the perfect replacement for my generator. No adjustment needed.

  22. Rated 5 out of 5

    charles

    Good product

  23. Rated 5 out of 5

    John

    Started the generator right out of shipping container.

  24. Rated 5 out of 5

    John

    Started the generator right out of shipping container.

  25. Rated 5 out of 5

    Rich

    As described, the same for my champion 6000w Generators. Easy to install. Will keep on a battery tender until needed. Hopefully it will last 10yrs like the original. Also same battery as my jumper box.

  26. Rated 5 out of 5

    Brad Conner

    Good size for my generator.

  27. Rated 5 out of 5

    George W.

    the wings fit together too loosely. I will probably have to glue them to ensure they are sturdy.

  28. Rated 5 out of 5

    Nick C.

    Works perfect for my generator.

  29. Rated 5 out of 5

    Nick C.

    Works perfect for my generator.

  30. Rated 5 out of 5

    Charles S.

    Bought for my generator, came charged and works great. Just what I needed.

  31. Rated 5 out of 5

    Jesica Fanning

    This was the perfect replacement for my Champion generator. It’s reliable and well build. I’d purchase this again if i need a battery of this sort

  32. Rated 5 out of 5

    Alberto

    It’s a battery…

  33. Rated 5 out of 5

    John Bralove

    Came with a charge so I could start my generator up immediately. Really can’t comment on the longevity since I just got it.

  34. Rated 5 out of 5

    Albert

    Looks like a well made battery and it came 100% charged. Fit my Champion generator perfectly. I?ll buy another one when the time comes.

  35. Rated 5 out of 5

    Captain

    Easy to install and plenty of cranking power.

  36. Rated 5 out of 5

    Ron Cognetta

    Great value and it was a perfect replacement for the OEM’S battery

  37. Rated 5 out of 5

    walter ruhl

    price;great. exact fit; great. used to replace dead battery in my portable jumpstarter,airpump & my champion generator.

  38. Rated 4 out of 5

    RICHARD HUGHES

    Fast delivery, took initial charge quickly

  39. Rated 5 out of 5

    Rachel Greenhaw

    Thanks

  40. Rated 4 out of 5

    Jena Thomas

    As advertised

  41. Rated 5 out of 5

    Andy W

    It fits where it is supposed to and It started my generator.

  42. Rated 5 out of 5

    Jim Woody

    Bought it for my generac generator works fine so far

  43. Rated 5 out of 5

    Horace Honzell

    Works. No problems so far.

  44. Rated 5 out of 5

    Rolando Cereca

    I like the performance and fits right on i would recommend it for anyone who has a champion generator.

  45. Rated 5 out of 5

    Calisol

    Perfect fit and price

  46. Rated 5 out of 5

    mike

    works great

  47. Rated 5 out of 5

    Shirley Sawyer

    Product received as advertised

  48. Rated 4 out of 5

    Elvis

    I am very satisfied with the product / I would like to give a better review / but to do that I need to know the longevity or life of the battery which will take some time// thumbs up

  49. Rated 5 out of 5

    Prem

    I bought this battery for my generator. I had not ran my standalone generator for about six months and was very skeptical about this battery helping. But was very pleasantly surprised with the results. Generator started on the first try and works like a charm. Very happy with the purchase.

  50. Rated 5 out of 5

    Customer

    Exact replacement. Came fully charged and ready to use.

  51. Rated 5 out of 5

    Frank Troy

    Fit right works good, thanks!

  52. Rated 5 out of 5

    Thomas Goldbach

    Came fully charged…dimensions were as advertised….perfect fit in my generator

  53. Rated 5 out of 5

    Tom

    good price and a perfect fit.

  54. Rated 5 out of 5

    L.J.

    Great battery turns over Generator faster than original

  55. Rated 5 out of 5

    Phil D.

    Battery fit perfectly! Generator fired right up.

  56. Rated 5 out of 5

    Carmen Cuadrado

    I like e everything!!

  57. Rated 3 out of 5

    George

    Didn’t fit my Champion Generator.

  58. Rated 5 out of 5

    whatever

    Lots of power. Turns over generator much faster than original. Good quality product and has the terminal screws included that most do not. Screws aren’t expensive but they saved me a trip to a store.

  59. Rated 5 out of 5

    Customer

    Fit properly and seems to working fine.

  60. Rated 5 out of 5

    Michael Lambert

    Great OEM replacement battery for my generator!

  61. Rated 4 out of 5

    Customer

    works good

  62. Rated 4 out of 5

    Jonathan

    Works and fits champion generator as advertised

  63. Rated 5 out of 5

    BobD

    Perfect fit, smoking price compared to Tractor supply and Walmart. Quick delivery. Would purchase again

  64. Rated 5 out of 5

    Agapo

    Started my generator quickly, very good.

  65. Rated 5 out of 5

    james dickson

    exzellent battery

  66. Rated 5 out of 5

    Donald D.

    Heavy duty an works great

  67. Rated 5 out of 5

    luvagooddeal

    It’s a battery… 😉

  68. Rated 5 out of 5

    Joseph Criscione

    Everything was fine and it fit well.

  69. Rated 5 out of 5

    Charlie

    Battery was a perfect fit for the Gen set.

  70. Rated 4 out of 5

    Web Customer

    I’ll let you know when we have our 1st power failure

  71. Rated 4 out of 5

    Customer

    I’ll let you know when we have our 1st power failure

  72. Rated 5 out of 5

    Web Customer

    Good battery. Fast shipping.

  73. Rated 5 out of 5

    Customer

    Good battery. Fast shipping.

  74. Rated 5 out of 5

    Dr. Ruth

    Seems fine. Started up right away and keeps going. It has only been two months though……

  75. Rated 5 out of 5

    Dr. Ruth

    Seems fine. Started up right away and keeps going. It has only been two months though……

  76. Rated 5 out of 5

    Boomerang Recovery

    As described. Very happy with purchase

  77. Rated 4 out of 5

    Grandma of 5

    Excellent value. Quick delivery.

  78. Rated 5 out of 5

    Tom

    This battery did every thing I needed. The vendor was outstanding and got the battery to me very quickly.

  79. Rated 5 out of 5

    Tom

    This battery did every thing I needed. The vendor was outstanding and got the battery to me very quickly.

  80. Rated 5 out of 5

    riderss

    Great price for exact replacement battery for my Champion generator. Ultra-fast delivery!

  81. Rated 5 out of 5

    riderss

    Great price for exact replacement battery for my Champion generator. Ultra-fast delivery!

  82. Rated 5 out of 5

    Muldor Havinski

    Saved a lot of money making this fit a PowerWheels vehicle. Simple Youtube.com instruction on required wiring for a PowerWheels.

  83. Rated 5 out of 5

    Richard J. Bendorf

    I have 5 UPS units that I use on various servers and desktop computers. I have installed the MightyMax ML18-12 batteries in my older APC Smart UPS 1500 units and they have operated perfectly. Each unit takes 2 batteries, and I have hot glued them to together just for stability. I would recommend this as an excellent replacement battery for the Workhorse APC Smart UPS 1500.

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