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Ignitions and Electrical› Charging Systems

Deka

12-Volt AGM Battery

$205.00 $149.99 Save $55.01

SKU: 8AMU1R

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Special Order
Ships in 4–6 weeks
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$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Overview

The Deka 8AMU1R is a 12-volt Absorbed Glass Mat (AGM) battery designed as a replacement for 1999-2005 Mazda Miata models with trunk-mounted batteries. It offers 320 Cold Cranking Amps (CCA) for reliable starting power. This maintenance-free battery is built in the USA and features a spill-proof and leak-proof design, making it ideal for trunk installations.
Show original supplier description
The Deka 8AMU1R is a premium AGM battery engineered specifically for 1999-2005 Mazda Miata NB models where the battery is located in the trunk. It provides 320 CCA for dependable engine starts and features advanced AUX AGM technology with individual cell venting for optimal performance and recombination efficiency. This maintenance-free battery boasts a spill-proof and leak-proof design, ensuring safe installation in the trunk environment. Constructed with ultra-pure electrolyte and a reinforced case, the 8AMU1R is built for durability and resilience, offering superior deep discharge capabilities. Its compact dimensions (7.8" × 5.1" × 7.2") provide an exact fit for the original equipment location, utilizing existing hold-down hardware. The battery is fully charged and ready for immediate installation as a drop-in replacement. Compatibility is strictly limited to 1999-2005 Mazda Miata models with the battery housed in the trunk. Vehicles with an under-hood battery location require a different battery. The Deka 8AMU1R comes with a 1-year free replacement warranty and is manufactured in the USA, offering exceptional value and trusted quality for your Miata.
Vehicle Symptoms
  • Slow cranking on cold start
  • Dim headlights and interior lights
  • Battery warning light on dash
  • Difficulty starting after sitting for a few days
  • Trunk battery corrosion or leakage concern
Diagnostic Codes
  • P0562 – System Voltage Low
Relevant Conversations
  • 1999 Miata trunk battery replacement guide
  • Deka 8AMU1R vs Optima red top for NB
  • Mazda Miata slow crank no start battery
  • AGM battery for Miata trunk safety
  • P0562 code on 2001 Miata – battery issue?
  • Best battery for 2000 Mazda Miata NB
  • Deka battery review Miata forum
  • Trunk battery venting Miata AGM replacement
  • Where to buy Deka 8AMU1R battery
  • Miata battery size 8AMU1R cross reference

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandDeka
Part Number8AMU1R
CategoryIgnitions and Electrical
5,000+ Trusted brands
1M+ Enthusiasts
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(760) 282-4645 hello@motormia.co

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