Mazda MIATA Battery
Item #: MAR-8AM-U1R   |    In Stock

Mazda MIATA Battery
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Mazda MIATA Battery

Item #: MAR-8AM-U1R   |  In Stock


Today's Price: $139.95
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Price: $139.95

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1 Year Warranty
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Product Specifications for Mazda MIATA Battery

BM Part #: MAR-8AM-U1R
Made In: U.S.A.
Voltage: 12 Volt
Capacity: 25 Ah
Type: AGM
Battery Size: Group U1R
Length: 7 3/4"
Width: 5 1/8"
Height: 7 1/4"
Cold Cranking Amps: 320 CCA
Shipping Weight: 25.45Lbs
Warranty: 1 Year
  • Made in the USA. Why it matters:
    • Superior craftmanship; rigorously tested; high-quality parts.
  • This Marathon Miata AGM battery fits all Mazda Miatas from 1990 through 2005 with correct polarity (battery location is in the trunk of the vehicle).
    • If your Miata has its battery located under the hood, this is not the correct replacement battery.
  • Fully Charged out of the box and easy to install.
  • Sealed, Maintenance-Free with a Vibration Resistant Design.
  • Environmentally friendly: 100% recyclable, leakproof, and spillproof.
  • Built-in vent tubes for O.E. (Original Eqiupment) vent hose attachment.
    • Vent tubes use 1/4" inch OD vacuum tubing.
  • BCI Designation: U1
  • Replaces Panasonic S46A24L (some modification may be required)
Frequently Bought Together:
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Total for Both Items: $219.90

Product Description

Free Standard Shipping!

Order today and receive free standard shipping on your Mazda MIATA Battery. Only valid in the contiguous 48 states and not valid with any other offer. Physical address required (No PO Boxes).

Premium quality absorbed glass mat technology (AGM) is ideal for the Mazda Miata. The Marathon Miata AGM Battery was designed for more than performance; it was designed for the enthusiast. Completely spillproof and leakproof; frequent replacement and high maintenance are over! The AGM technology increases power while improving driver and environmental safety. The key to this technology is the highly porous microfiber separators, which completely absorb and trap the electrolyte. Molded top and side connection terminals provide versatility, increased strength and durability. The Marathon AGM Battery provides the most advanced power and value in the industry.

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Our replacement Miata batteries are sealed, maintenance free AGM rechargeable batteries. Due to their construction, they do not require any ventilation, can be mounted in any orientation, and do not require maintenance.

The battery features two vent tubes to attach your original vent hoses. These are not required for installation, but are offered to give you a place to attached your original hoses. Some modification may be necessary.

Cross Reference

The Mazda MIATA Battery has been cross-referenced to be compatible with or replace these OEM part numbers and models:
  • YearsMakeModelEngine
  • 1990MazdaMX-5 MiataL4 1.6L
  • 1991MazdaMX-5 MiataL4 1.6L
  • 1992MazdaMX-5 MiataL4 1.6L
  • 1993MazdaMX-5 MiataL4 1.6L
  • 1994MazdaMX-5 MiataL4 1.8L
  • 1995MazdaMX-5 MiataL4 1.8L
  • 1996MazdaMX-5 MiataL4 1.8L
  • 1997MazdaMX-5 MiataL4 1.8L
  • 1998MazdaMX-5 MiataL4 1.8L
  • 1999MazdaMX-5 MiataL4 1.8L
  • 2000MazdaMX-5 MiataL4 1.8L
  • 2001MazdaMX-5 MiataL4 1.8L
  • 2002MazdaMX-5 MiataL4 1.8L
  • 2003MazdaMX-5 MiataL4 1.8L
  • 2004MazdaMX-5 MiataL4 1.8L
  • 2005MazdaMX-5 MiataL4 1.8L
  • Astrolite 8AMU1R
  • AutoPride APU1RM
  • Batteries Plus SLIMU1R-PRM
  • Bosch S5584B
  • Canadian Tire MOT46A24L
  • Carquest 8AMU1R
  • Deka 8AMU1R
  • Duracell AGMU1P
  • Duracell SLIU1RT
  • Exide MIATA-60
  • Federated APU1RM
  • Ferguson 8AMU1R
  • Fisher APU1RM
  • Interstate MT-MX-5
  • Magna Power MPS46A24L
  • Mighty MIATAP
  • MotoMasher MOT46A24L
  • NAPA 7581R
  • NAPA M-320
  • Parts Master APU1RM
  • Parts Plus MIATAS
  • Perfect Start MIATA
  • Resource Power APU1RM
  • SuperStart MIATA
  • Truck Pride APU1RM
  • World Source One (WSO) AMU1R

Customer Reviews

418 Reviews | 4.7 out of 5
5 stars (315)
4 stars (94)
3 stars (4)
2 stars (3)
1 star (2)
Would recommend this product.
What our Customers are saying
Great battery for my miata
September 9, 2021
by on September 9, 2021

I wanted a battery that has the vent holes found on a miata original battery. I highly recommend you buy one with vents because without is a safety issue. Can't go wrong with this as a replacement. Sure, you could buy a aftermarket, fitting one from an auto shop but it's going to cost about the same (or more), and rumor has it these last much longer. If you have a miata na. Buy it it works really well!

Would recommend to a friend?
Just what you need
September 8, 2021
by on September 8, 2021

Simple, looks nice and runs well, I have a 91 and a 95 kiata and both run this battery with no issues

Would recommend to a friend?
Lasted 8 years
June 25, 2021
by on June 25, 2021

My original 1991 Mazda Miata battery lasted ten years. My Marathon battery lasted eight years, but I believe it would have lasted longer, if my son had not left the interior lights on a couple times and fully discharged the battery. I'm ordering another Marathon as they are long lasting and built in the USA. Thanks Battery Mart for carrying this unique battery for our Miatas!

Would recommend to a friend?
So far so good
May 11, 2021
by on May 11, 2021

The original Panasonic battery in my Miata was getting weak after 20 years (not a typo) and needed to be replaced. The vent lines needed to be changed around a bit but it was no big deal. I just had to move a couple of the hoses to different locations. No cutting or additional tubing was needed.

Lets see how long this battery lasts.

Would recommend to a friend?
Purchased multiple times
Apr53l 29, 2021
by on Apr53l 29, 2021

We've bought this battery multiple times for multiple Miatas. Never had any issues and the batteries work as one would expect them to.

Would recommend to a friend?
Apr48l 11, 2021
by on Apr48l 11, 2021

Cheapest core charge..arrived in one day...and so far cranking away..happy with purchase so far

New Jersey
Would recommend to a friend?
bad luck....
March 29, 2021
by on March 29, 2021

I bought one of these back in March of 2018.. the battery lasted 8 months and had to send it back (at my expense).. they sent me a replacement, and here we are, less than 2.5 years later, and that one went dead.. I live in Louisiana, so the car gets used year round.. it didn't sit up all winter... would not buy again.

Luling, LA
Would recommend to a friend?