Lifeline GPL-4DA AGM Deep Cycle Battery – 12V 210Ah Group 4D Marine, RV & Solar Battery

High-Capacity American-Made AGM Power for Marine, RV & Off-Grid Systems

The Lifeline GPL-4DA 12V 210Ah AGM Deep Cycle Battery is a premium-grade energy storage solution engineered for demanding deep-cycle applications. Built for users who require dependable, long-lasting power, this Group 4D battery delivers exceptional reserve capacity, strong discharge performance, and maintenance-free operation in a rugged, marine-proven design.

Handcrafted in the United States by Concorde Battery Corporation, Lifeline batteries are known for their military-grade reliability and exceptional build quality. The GPL-4DA is widely used in recreational vehicles, marine house systems, and off-grid energy storage installations where consistent power delivery is critical.

⚠️ Availability Notice

SOLD OUT – BACKORDERS ACCEPTED
Estimated Availability: January – February

Why Choose the Lifeline GPL-4DA?

True Deep Cycle AGM Engineering

The GPL-4DA is purpose-built for deep-cycle use, providing stable energy output over long discharge periods and repeated cycling without performance degradation.

Massive 210Ah Capacity

Designed to support high-demand systems, this battery provides substantial reserve power for extended runtime in RV, marine, and solar applications.

Handcrafted in the USA

Each Lifeline battery is individually manufactured and tested in the United States to ensure premium quality, consistency, and long service life.

Military & Marine Proven Performance

Lifeline batteries meet demanding military specifications and are used aboard numerous U.S. military vessels and vehicles where reliability is essential.

Coast Guard Approved

Certified for marine applications, making it a trusted choice for boaters and offshore power systems.

Maintenance-Free AGM Technology

Sealed AGM construction eliminates watering, reduces corrosion risk, and ensures spill-proof operation in any orientation.

Exceptional Reserve Capacity

Designed to deliver long-lasting energy output, supporting critical loads for extended periods.

Industry-Leading Warranty

Backed by a 5-Year Manufacturer Warranty, providing confidence in long-term durability and performance.

Ideal Applications

The Lifeline GPL-4DA is perfect for:

• Class A & Class C Motorhomes

• Diesel Pushers & Luxury Coaches

• Marine House Battery Systems

• Sailboats & Yachts

• Off-Grid Solar Energy Storage

• Renewable Energy Systems

• Emergency Backup Power

• Telecommunications Systems

• Industrial Equipment

• Mobile Workstations

• Commercial Marine Vessels

Key Features

✔ 12 Volt AGM Deep Cycle Battery
✔ 210Ah High-Capacity Storage
✔ Group 4D Heavy-Duty Format
✔ Maintenance-Free Design
✔ Sealed Spill-Proof Construction
✔ Coast Guard Approved
✔ Military Specification Grade
✔ High Reserve Capacity Output
✔ Fast Recharge Acceptance
✔ Exceptional Vibration Resistance
✔ Made in the USA
✔ Backed by a 5-Year Warranty

Technical Specifications

Built for Serious Power Demands

Whether you're outfitting a luxury motorhome, powering marine electronics offshore, or building a robust off-grid solar system, the GPL-4DA delivers dependable, high-capacity energy storage designed for long-term performance.

Its combination of American craftsmanship, military-grade engineering, and advanced AGM technology makes it one of the most trusted deep-cycle batteries in its class.

Order Information

Due to high demand, the Lifeline GPL-4DA is currently backordered. Reserve yours today to secure your place in the next shipment batch.

Upgrade to Premium Lifeline Power

Choose the Lifeline GPL-4DA AGM Deep Cycle Battery for reliable, maintenance-free energy storage built to perform in the most demanding environments. When power matters most, Lifeline delivers.