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MasterVolt 62002250 AGM 12/225 Group 8D Dual-Purpose Sealed Marine Battery 225Ah 12V

Manufacturer

MasterVolt

<h3>MasterVolt: Autonomous Power Solutions for Demanding Applications</h3><p>MasterVolt has earned its reputation as a global leader in autonomous electrical power systems by combining cutting-edge technology with uncompromising reliability. As specialists in the management, conversion, and storage of electrical energy, MasterVolt offers a comprehensive product portfolio with a power range from 300 W to 40 kWatt, making them a trusted choice for marine, RV, industrial, and off-grid applications where dependable power is non-negotiable.</p><p>Part of the Navico Group, MasterVolt benefits from decades of engineering excellence and a deep understanding of harsh operating environments. The brand's philosophy centers on providing integrated electrical systems that work seamlessly together, from power generation and storage to conversion and intelligent monitoring. With offices and partners in more than 80 countries, MasterVolt delivers global support backed by local expertise, ensuring customers have access to technical assistance wherever their adventures or operations take them.</p><h3>Engineered for Performance in Extreme Conditions</h3><p>What distinguishes MasterVolt from competitors is their systems-focused approach to electrical power. Rather than selling isolated components, MasterVolt designs products that communicate through their proprietary MasterBus platform, enabling comprehensive system monitoring and control. This integration is particularly valuable in complex installations where multiple power sources, battery banks, and loads must work in harmony.</p><p>The brand's product lineup addresses every aspect of autonomous power management. Their advanced <a href="/11274-mastervolt-battery-chargers-200141">battery chargers</a> utilize sophisticated multi-stage charging algorithms optimized for various battery chemistries, from traditional AGM to cutting-edge lithium-ion technologies. These chargers are engineered to maximize battery life while minimizing charging time—a critical consideration for users who depend on limited generator runtime or solar input.</p><p>Equally important to any robust electrical system are <a href="/11274-mastervolt-battery-isolators-voltage-sensitive-relays-200144">battery isolators and voltage sensitive relays</a>, which intelligently manage current flow between multiple battery banks. MasterVolt's approach to battery isolation ensures that essential loads always have priority access to power while auxiliary batteries charge efficiently when surplus capacity is available. This intelligent power distribution prevents the all-too-common scenario of a depleted starting battery.</p><h3>Trusted in the World's Most Demanding Environments</h3><p>MasterVolt specializes in managing, monitoring, converting and storing power for marine, mobile and industrial applications, environments where equipment faces constant vibration, temperature extremes, moisture exposure, and the consequences of power system failure can be severe. Their products are built to withstand these challenges while maintaining precise voltage regulation and clean power output that protects sensitive electronics.</p><p>Whether powering a blue-water cruising yacht, equipping an overland expedition vehicle, or providing backup power for critical infrastructure, MasterVolt delivers the reliability and performance that professionals demand. Their commitment to innovation ensures that every product represents the latest advances in power electronics, energy efficiency, and user-friendly operation.</p>

Part Number

62002250
07/12/2036 11:13 PM
Sale Price

$908.14

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The MasterVolt AGM 12/225 (Group 8D) is a heavy-duty, 12V 225Ah sealed Absorbed Glass Mat (AGM) marine battery engineered for demanding on-board applications. Utilizing advanced glass-fiber technology, the electrolyte is fully absorbed within the mat separator, eliminating free liquid, preventing spills, and requiring zero maintenance throughout its service life. With no gas formation under normal operating conditions and no ventilation requirements, this battery can be safely mounted in any orientation or location aboard your vessel.

Designed as a true dual-purpose battery, the AGM 12/225 delivers both reliable engine-starting performance and sustained service power. It provides powerful high-current bursts for starting engines, operating bow thrusters, and running winches, while also handling cyclical service loads such as onboard lighting, electronics, and entertainment systems.

Key Features:

  • Dual-purpose design — handles both starter and service/house battery functions in a single unit
  • 225Ah capacity (C20 rating) — large reserve capacity for extended onboard power
  • 1,300A CCA (SAE) / 815A CCA (DIN) — exceptional cold cranking performance for reliable engine starts
  • Glass-fiber AGM technology — low internal resistance for rapid, high-current discharge
  • Thicker plate construction — extends overall battery lifespan and supports medium cyclical use
  • Maintenance-free and sealed — no water additions, no corrosive fumes, and spill-proof
  • Universal terminal compatibility — removable M8 battery poles are compatible with all standard battery terminals
  • Winter-ready — maintains first-rate condition even after extended storage
  • Compatible with 3-Step Plus charging — works seamlessly with MasterVolt chargers and other standard multi-stage chargers
  • Maximum charge current: 63A
  • Two-year manufacturer warranty

The MasterVolt AGM 12/225 is a direct upgrade over conventional flooded lead-acid batteries — the AGM 12/90 delivers the same initial power surge as a 180Ah flooded battery, and the 12/225 scales that advantage further into Group 8D territory. Whether replacing an aging wet battery bank or building out a new marine electrical system, this battery offers superior reliability, safety, and longevity in a robust sealed package.

Products specifications

Battery Type

AGM

Dimensions

9 1/2" Width x 9 3/8" Height x 20 5/8" Length

Group Size

Group 8D

Type

Tapered Stud

Voltage

12 Volts DC

Amperage Hours

225

Best Use

Dual Purpose

Cold Cranking Amps

1300 CCA

Marine Cranking Amps

1300 MCA

Reserve Minutes

474

Warranty Details

Two Years

Shipping took longer than expected as I paid for expedited shipping. I reached out to ask why it wasn't sent two day and got no reply. The customer service could really use improvement and this is reflected in multiple reviews. However, the products arrived safely and as described. I'm very satisfied with the pricing as well. At the end of the day, that's the most important thing.

Great ordering experience

Fast shipment and item as described.

Very easy to buy and good quality.

I paid a little extra for the fast delivery but it was worth it. I got it quickly and it worked great

Great job

I just never do top scores

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