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: $129.95
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Price: $129.95

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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:
Buy Together and Save
Mazda MIATA Battery
Battery Tender Plus 021-0128: 12 Volt 1.25 Amp Battery Charger (Non-CEC)
Order Today and get Free Shipping!
Total for Both Items: $183.90

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.

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
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  • 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

406 Reviews | 4.7 out of 5
5 stars (304)
4 stars (94)
3 stars (4)
2 stars (2)
1 star (2)
Would recommend this product.
What our Customers are saying
Great battery for my NB Miata!
December 23, 2020
by on December 23, 2020

Fits like a glove, vents are in the right places. All good.

Would recommend to a friend?
miata battery
December 16, 2020
by on December 16, 2020

I had a battery mart miata battery that was over 5 years old and was in need of replacing, and this would be my 3rd miata battery from them and the fit and finish was as expected

Would recommend to a friend?
August 25, 2020
by on August 25, 2020

This replaced the identical battery that I bought from Battery Mart 5 1/2 years ago. Good product and prompt delivery.

Would recommend to a friend?
Miata battery
August 20, 2020
by on August 20, 2020

Shipped quickly and fit perfectly.

Would recommend to a friend?
Happy Gal!
July 30, 2020
by on July 30, 2020

Received battery REALLY quickly. Fits perfectly in my '91 Miata. Works like a charm. Best price I could find. Very pleased.

Golden Rule Advocate
Would recommend to a friend?
Takes a lickin' and keeps on tickin'
July 13, 2020
by on July 13, 2020

This is my second battery of this type. Last one was a Westo brand, but it is the same battery, both being made by East Penn/ Deka in Pennsylvania. I got 13 years out of the Westo so shopped around and found that Battery Mart had the best price for the Marathon.

Two weeks ago, I managed to leave the interior lights on and did not go near the car until last week. Battery was flat. I mean flat, zero volts measured across the terminals. With the battery disconnected, I measured across the terminals again and got 0.54VDC. I've never killed a battery that badly. I had nothing to lose so I put it on a 0.75A Battery Tender Jr for 2-1/2 days. The charger showed full charge. Yesterday, I took that charger off and put a Battery Minder 1.75 charger on and went thru its cycles and showed a fully charged battery. I put the battery in the car and a volt meter across the terminals. When I cranked the engine, voltage dropped to about 10.8VDC which is normal for any battery while cranking an engine. Engine started instantly. Ran several crank/start cycles and never failed to crank and start and battery voltage always recovered.

This is one tough battery. I would highly recommend it and will buy another, in about 13 more years. ;-)

Upstate NY
Would recommend to a friend?
Awesome Miata Battery
July 8, 2020
by on July 8, 2020

The best battery ever! Prompt delivery. Well packaged. Installed it and shortly afterwards, left skeet marks on my driveway. Thank you!

Broomfield, CO
Would recommend to a friend?