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Mighty Max Battery

ML-U1-CCAHR -12 Volt, 320 CCA, Nut and Bolt (NB) Terminal, Rechargeable SLA AGM High Rate Series Battery

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Availability: In Stock.
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Arrives Tuesday, Aug 25
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Edition: 12V 320 CCA U1


Features

  • ML-U1-CCAHR is a 12V 320 Cold Cranking Amps (CCA) Sealed Lead Acid (SLA) Battery.
  • Dimensions: 7.75 inches x 5.11 inches x 6.25 inches. Polarity: Positive on Left, Negative on Right. Listing is for the Battery and Screws only. No wire harness or mounting accessories included.
  • SLA / AGM spill proof battery has a characteristic of high discharge rate, wide operating temperatures, long service life and deep discharge recover.
  • Compatibility: Craftsman 25780 Lawn Tractor Mower, Cub Cadet LTX 1046 KW Ride Mower, Craftsman ZT7000 Lawn Tractor, Wheel Horse 418 Riding Lawn Mower, Ariens Pro Master 300 Series Mower, Husqvarna Scag Turf Tiger Mower, Dixie Chopper SP 3200 0Turn Mower, Toro Wheel Horse 7-25 Lawn Mower, Toro Timecutter Z5000 Lawn Mower, Bad Boy 6000 Series 300CCA Mower, JohnDeere 330 16 HP 340CCA Mower, John Deere EZtrak Z425 300CCA Mower, Murray Ohio 16HP/42 16 HP Mower, Troy-Bilt 34343 350CCA Lawn Mower
  • Rechargeable battery that can be mounted in any position, resists shocks and vibration. Long lasting high performance in high and low temperatures.

Description

This ML-U1-CCA-HR 12 volts 320 CCA absorbed glass mat (AGM) battery is made with the highest quality pure virgin lead (99.99%) to create a long lasting, durable power source for any machinery requiring a cold cranking power source. The advanced pure lead technology, lower internal resistance and increased plate compression give this battery a longer service life, better deep cycling and overall quicker start-ups for all your lawn and garden machinery. The clever, non-spillable design allows the battery to sit and function in virtually any position increasing your opportunity for ease of mounting. The tough AGM separators and high cell composition increase this battery’s vibration resistance up to 20 times more than that of conventional batteries making it perfect for all your lawn and garden machinery.

Number of Batteries: 1 12V batteries required.


Brand: Mighty Max Battery


Battery Cell Composition: Lead Acid


Battery Capacity: 320 amp_hours


Recommended Uses For Product: Power Tool


Number of Batteries: 1 12V batteries required.


Brand: Mighty Max Battery


Model Number: 3878105


Model Name: ML-U1-CCAHR


UPC: 759478389345 850005902461


Manufacturer: Mighty Max Battery


Included Components: Battery


Item Type Name: SLA AGM Battery


Warranty Description: 1 Year Manufacturer


Battery Capacity: 320 amp_hours


Voltage: 12 volts


Reusability: Rechargeable


Amperage: 320 A


Compatible Phone Models: No Phone Models


Unit Count: 1 Count


Battery Weight: 14.1 pounds


Item Dimensions: 7.75 x 5.11 x 6.25 inches


Item Weight: 14.1 pounds


Antenna Location: Power Tool


Battery Cell Type: Lead Acid


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Aug 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Reliable Starting Power for Ride Mowers
Edition: 12V 320 CCA U1
This battery has been a great upgrade for my riding mower. The 320 CCA provides strong, consistent starts, even after the mower sits for a few days. Installation was straightforward with the included hardware, and it fit perfectly without modifications. It holds a charge well over time and hasn’t shown any signs of weakening after multiple mowing sessions. Build quality feels solid, and it handles vibration without issues. Overall, a dependable, no-hassle battery that keeps my mower ready to go every time. ... show more
Reviewed in the United States on April 11, 2026 by Jean Paul
    • Worked right off the bat, will see how long it last.
Edition: 12V 320 CCA U1
Review Image by Highstandardz
Review Image by Highstandardz
Review Image by Highstandardz
Purchased battery for AGM vs normal lead acid to power my old John Deere Lawn Tractor. I am tired of replacing the standard battery almost every year. I use this tractor for lawn mowing, pulling trailers, spraying, snow plowing, etc. The battery fit right in with no issues, started the tractor. Just have to see how long it will last! ... show more
Reviewed in the United States on August 14, 2026 by Highstandardz
    • MIGHTYMAX BATTERY AND JOHN DEERE S130! ❤️🤠
Edition: 12V 320 CCA U1
Review Image by William Garcia
Very good battery for my John Deere S130. It fit super. The first start was a powerful one. For now I recommend this battery 100 %. I will give you an update in a year.
Reviewed in the United States on August 4, 2026 by William Garcia
    • Worked, but required some location modification to get to fit.
Edition: 12V 320 CCA U1
Bought to replace expired battery in my Cub Cadet Z-Turn. Battery is slightly longer than the OEM and had to modify retaining tabs in machine to get to fit. Was a little tricky due to metal thickness and location of tabs. Once got these bent back slightly, battery fit. Beyond that, works as expected. Will be interesting to see how long this one lasts. The OEM battery made it five years. ... show more
Reviewed in the United States on July 10, 2026 by A. Armstrong
    • Good Product, Lots of Power
Edition: 12V 320 CCA U1
Battery arrived with the positive terminal crushed. There was no way I could use it because you could not put the bolt through the terminal hole. Contacted Amazon and they said they would send a replacement asap. They said at my convenience, drop the defective battery off at UPS, which I did. Replacement battery came 5 days after I made contact with Amazon. No damage this time. I installed it no problem. Battery was 80% charged when I received it. Trickle charged it overnight to 100%. Starts my garden tractor with no problem. Battery seems to have a lot of power, which is good since I have a snow plow with lights and and a electric lift, which I might have to use soon. I need another battery for one of my other tractors for spring to mow grass. If this battery works out, and I don’t see any reason It would not, I will purchase another one. ... show more
Reviewed in the United States on November 29, 2025 by DK
    • Perfect Fit for Toro TimeCutter 75742 — Strong Cranking and Same‑Day Install
Edition: 12V 320 CCA U1
Review Image by Julio
I bought this Mighty Max ML‑U1 AGM for my Toro TimeCutter Zero Turn (model 75742), and it’s an exact fit. The battery compartment on these mowers is tight, so I was relieved that this one dropped right in with no modification. The mower fired up immediately on the first turn of the key, and I was able to mow the lawn the same afternoon it arrived. The AGM design is a big upgrade over the original wet‑cell battery — no maintenance, better vibration resistance, and noticeably stronger cranking power. If you have a TimeCutter and want a reliable, hassle‑free replacement, this battery is a great choice. ... show more
Reviewed in the United States on April 13, 2026 by Julio
    • Is this what I should assume is a common problem .?
Edition: 12V 320 CCA U1
I purchased may of 2025 and it worked great. Went to charge and use it April 6 of 2026 and it was completely dead. Tried to charge but it said it was a dead short in the battery I have used mightymax products in the past for my cycles and been very satisfied with their products so I was surprised at this Failure it was stored in a heated barn for the winter along with my motorcycles which are fine and charge well I assume this is a isolated problem ... show more
Reviewed in the United States on April 6, 2026 by Lou B.
    • Well worth the money
Edition: 12V 320 CCA U1
This battery works great in my John Deer tractor
Reviewed in the United States on July 22, 2026 by Thomas J Davis Jr.

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