Exceptional Value in Specialized Miata Power. As battery specialists since 2010, we deliver competitive pricing on exact-fit solutions. The Deka 8AMU1R provides 320 CCA cranking power with guaranteed compatibility for 1999-2005 Mazda Miata models with trunk-mounted batteries. This premium AGM replacement features clearly specified dimensions (7.8" × 5.1" × 7.2"), maintenance-free design, and enhanced valve-regulated construction. With USA-made quality and spill-proof reliability, get trusted power at exceptional value.

Why Customers Choose Deka 8AMU1R: Engineered specifically for NB Miata trunk installations with 320 CCA power. Premium AUX AGM technology with individual cell venting for optimal performance. Exact replacement for original Miata battery - perfect 7.8" × 5.1" × 7.2" fit. Spill-proof and leak-proof design ideal for trunk mounting. Made in USA quality - competitive pricing from battery specialists since 2010.

⚠️ IMPORTANT COMPATIBILITY NOTICE

This battery is ONLY compatible with 1999-2005 Mazda Miata models that have the battery located in the TRUNK.

If your Miata's battery is located under the hood, this is NOT the correct battery for your vehicle. Please verify your battery location before ordering.

Quick Specifications

Replaces: Original NB Mazda Miata trunk-mount battery (1999-2005)

Specifications: 12V, 320 CCA, Absorbed Glass Mat (AGM)

Dimensions: 7.8" × 5.1" × 7.2" (198mm × 130mm × 183mm)

Average Lifespan: 4-6 years with proper maintenance

Compatibility: 1999-2005 Mazda Miata NB models with trunk-mounted battery ONLY

• • Deka 8AMU1R AGM Battery for Mazda Miata
• • Trunk-Mount Ready Design
• • Fully Charged and Ready to Install
• • 1-Year Free Replacement Warranty

Installation Location

• Trunk Location: 1999-2005 Miata models have battery in trunk behind passenger seat
• Easy Access: Remove trunk carpet panel to access battery compartment
• Perfect Fit: 7.8" × 5.1" × 7.2" dimensions match original equipment exactly
• Secure Mounting: Uses existing Miata battery hold-down hardware

Recommended Maintenance

Keep your Miata battery performing optimally with these 12V battery chargers:

• CTEK Chargers - Perfect for seasonal storage
• Battery Tender - Ideal for maintaining charge
• NOCO Genius - Smart charging technology

Q: What battery replaces the Deka 8AMU1R?
A: The Deka 8AMU1R is the exact replacement for the original 1999-2005 Mazda Miata trunk-mounted battery. It's specifically designed for NB generation Miatas with trunk battery location.

Q: Which battery fits 1999-2005 Mazda Miata models?
A: The Deka 8AMU1R fits all 1999-2005 NB Mazda Miata models that have the battery in the trunk. It provides 320 CCA with exact dimensions of 7.8" × 5.1" × 7.2" for perfect fitment.

Q: How long does the Deka 8AMU1R last in a Mazda Miata?
A: With proper maintenance, the 8AMU1R typically lasts 4-6 years. Its AGM design with ultra-pure electrolyte and deep discharge resilience provides extended service life. Consider using a battery maintainer during storage.

Q: What are the exact dimensions of the Deka 8AMU1R?
A: The 8AMU1R measures 7.8 inches long × 5.1 inches wide × 7.2 inches high (198mm × 130mm × 183mm). It weighs 24 lbs (10.9 kg) and delivers 320 cold cranking amps.

Q: Can I use this battery if my Miata battery is under the hood?
A: No, the Deka 8AMU1R is specifically designed ONLY for 1999-2005 Miata models with trunk-mounted batteries. If your battery is under the hood, this is not the correct battery for your vehicle.

Engineered for Your Miata

Unlike generic batteries, the Deka 8AMU1R is purpose-built for the unique requirements of trunk-mounted Miata batteries. The enhanced AUX AGM technology delivers premium power from a compact frame, perfectly sized for your NB Miata's trunk compartment.

Peace of Mind Performance

With 320 CCA starting power, spill-proof AGM construction, and USA-made quality, you can trust your Miata to start every time. The maintenance-free design means more time enjoying your roadster and less time worrying about battery care. Need emergency backup? Check out our portable jump starters for added confidence.

Battery Specialists Since 2010

With over a decade of experience, we understand the unique power needs of enthusiast vehicles like the Mazda Miata. Our partnership with Deka East Penn ensures you receive genuine USA-made products with full warranty support.

Expert Support for Miata Owners

The Deka 8AMU1R represents our commitment to providing exact-fit solutions for specialty applications. From performance car batteries to maintenance chargers, we're your trusted source for Miata power solutions at competitive prices.

Get Premium Miata Power Today

The Deka 8AMU1R delivers exceptional value with 320 CCA starting power and USA-made AGM reliability. With competitive pricing on this exact-fit Miata solution, spill-proof trunk-safe design, and enhanced AUX technology, you're investing in proven performance. As battery specialists since 2010, we provide clearly specified dimensions and guaranteed compatibility for your 1999-2005 NB Miata.

Order Your Deka 8AMU1R Battery Today