12V 9AH Battery Replacement for Generac XG8000E Portable Generators

(53 customer reviews)

$29.99

12V 9AH Battery Replacement for Generac XG8000E Portable Generators

Availability: In stock

SKU: ML9-12NB16 Category:
Delivering power when you need it, the Mighty Max ML9-12 12 Volt 9 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 ML9-12 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: 9 AH
Chemistry: SLA, AGM
Terminal: Nut and Bolt
Battery Dimensions: 
5.94 in x 2.56 in x 3.94 in
Weight: 5.17 Lbs
Warranty
1 Year
Volts

12V

Amp Hour

9Ah

Chemistry

SLA / AGM

Terminal

Nut and Bolt

Quantity

1

Length

5.94

Width

2.56

Height

3.94

Weight

5.17 Lbs

Warranty

1 Year

53 reviews for 12V 9AH Battery Replacement for Generac XG8000E Portable Generators

  1. Jose Barcenas (verified owner)

    Probably too early to leave a review but sofar soo good.
    Fair price.
    Good service.
    Fast delivery.
    Can’t complain.
    I’ll recommend. 👍

  2. Louis M. (verified owner)

    Affordable, quick delivery, easy transaction.

  3. M. Cunningham

    Came on time and was an exact fit replacement.

  4. Haley Sears

    General generator

  5. Asa smith

    Installed on a battery jump pack/portable compressor.

  6. bluzboy

    correct size. good value for cost. don’t know how long it will last. difficult to install but that’s the generator issue not battery.

  7. lansing farney

    Great product!!! Thank-You!!!

  8. r s roosa

    I noted in the picture that the wire connection tabs where rotated from the original but thought that would be ok. However they are also wider and the connectors on the gerarator don’t fit on battery.

  9. Michael F. Tolipano

    It was for my generator

  10. arnie lee

    good product

  11. Steve Wojo

    Installed this in a generator with an unknown aged battery in it. Works great. I keep a battery tender on this one.

  12. dave caprio

    So far so good

  13. John S.

    While the battery was a perfect fit and started the generator right up, the connectors are entirely different from those on the original equipment battery. Now I imagine if you are a homeowner replacing this battery you are competent with hand tools and understand electricity to a degree. If not, have someone replace this battery for you. Not only because of the the amount of disassembly you have to do to access the battery but because the terminal on this battery DO NOT direct fit the generator side of the wiring. Don’t put in the title of the product this item is for a certain generator if it doesn’t fit exactly.

  14. Kara

    Awesome battery, came fast and was easy to install. Even came with a set of screws for the terminals!

  15. Billie Faye King

    So far so good but waiting to see what the Longevity is on this battery. I have found the last two batteries I have bought have only lasted 2 years each. They were NOT this brand!

  16. Dheges

    Repaired vehicle start pack. Worked well

  17. The Headhunter

    No problems — fits like the original on my Generac generator and works great!

  18. Grady J. Mathias

    This is my second battery and I am sure it will last as long as the first.

  19. Bart Beall

    Great replacement for my generator

  20. Dennis McKay

    fit good

  21. moo

    Generator battery

  22. Anne M Dickinson

    Bought for a friends generator to replace old battery

  23. Sitou A.

    Upgrade for my old generac GP7500

  24. jcj

    i needed this battery for my generators and these are tough batteries and i like shopping online, i do not have to go anywhere to get what i want, the price is good also.

  25. Cheapgary

    Warranty is 1 year on all. So why pay mor5e.

  26. robert muller

    i purchased this to replace the battery in a jump start pack . it came very rapidly and worked perfectly .

  27. Web Customer

    Generator. As advertised

  28. Kelsey

  29. Robin Webster

    It did what we needed. Was satisfied.

  30. RAAM Graphics

    Great little battery

  31. Laurie

    Fits as it should. Great product

  32. Linda Helfenstine

    Started right up.

  33. A. Sellers

    Replacement battery for my Generac portable generator.

  34. AL

    My Generac GX8000E is up & running! Good strong battery and a perfect replacement. I’m happy.

  35. Jeffrey Judd

    This also works in the Generac XT8000EFI Generators

  36. Cheryl Bischoff

    It was exactly what my husband was looking for

  37. Eric Malchow

    Fit perfectly.

  38. Eric Malchow

    Fit perfectly.

  39. David LaBorde

    Exact Fit. Fast Delivery. Hope for long service life.

  40. terry

    Was a replacement and it works fine

  41. R. Purvis

    Battery appears to be just as stated.

  42. Web Customer

    Replacement battery for generator.

  43. Customer

    Replacement battery for generator.

  44. joe richards

    worked great. was as described . would order from this company again. thanks

  45. Margaret Adams

    Just what I wanted!

  46. Ramon Gonzalez Jr.

    took old battery out put in new battery. pushed start button and it started. did not have to charge.

  47. nighthawk53

    Great battery

  48. REK

    As adv’d

  49. Ramon Gonzalez Jr.

    took old battery out put in new battery. pushed start button and it started. did not have to charge.

  50. Fred Dawson Customer

    Bought a replacement for Rally 8 in 1 better battery than the original . Came charged and rapidly. Will use on my next camping trip.

  51. GingerMan

    Perfect drop in replacement battery for the generator. Came charged and started right up.

  52. Master Card

    I use this for my Generac generator. I moved my battery from inside of my generator to the outside. It was go hard to get to the battery and it works great!!!!!!!!! It is a good quality battery.

  53. stephen dzialo

    The battery was a good fit except for the terminal ends, I had to slightly retrofit the connections, which some people might have trouble with. I am an auto mechanic so I was able to make it work

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

Mighty Max Battery
Excellent
4.8
Based on 452 reviews
Mighty max brings the battery backup back.
Arrived well packed in unopened sturdy box. Was replacement for identical Mighty Max battery I ordered 2 years ago. Taking 1 star off because didn’t include the needed terminal clips - was able to use the old battery’s clips
Same model fits in each of our four wheelers great product
Replacement for my Murray MT100 riding lawnmower. Murray does not make replacement batteries and you are on your own if the battery goes bad. Bought Murray MT100 in 2023, battery went bad in 1 year and all other Murray replacement batteries are LARGER so it won't fit.This Mighty Max Battery fit the MT100 fine and it starts it perfectly too.
Direct replacement for generac portable electric start generator. Works great.
Received really quick. Boxed well and fit great. Worked like a charm! I would definitely recommend this battery.
As an athletic trainer I rely on our water units every day to provide the water to our athletes. We have over 900 student athletes enrolled, and these units get used daily, so it is imperative these batteries are reliable. On a side note, I also use these batteries on my fishing kayak to power my fish finder. I can use my fish finder for about 20 hours before it turns off. These batteries are great! Highly recommend. I have not had any issues so I haven't spoken to customer service yet, but if they are as good as these batteries have been, I think I am in good hands.
Needed a replacement battery and the manufacturer wanted $50 whereas you only required $20. Made it worth it!
satisfy with price and easy installation.
Arrived in great condition comes with the bolts to attach the wire over all very satisfied
js_loader