Lifeline GPL-8DL AGM Deep Cycle Battery – 12V 255Ah Group 8D Marine, RV & Solar Battery (Lug Terminals)

Premium 8D AGM Power for Luxury Motorhomes, Marine Vessels & Off-Grid Energy Systems

The Lifeline GPL-8DL AGM Deep Cycle Battery represents the pinnacle of American-made deep-cycle battery technology. Designed for demanding energy storage applications, this massive 12-Volt 255Ah Group 8D AGM battery delivers exceptional reserve capacity, superior cycle life, and maintenance-free reliability for users who refuse to compromise on performance.

Handcrafted in the USA by Concorde Battery Corporation, the GPL-8DL is built using military-inspired engineering and premium-grade materials. Trusted aboard luxury yachts, high-end motor coaches, commercial vessels, and mission-critical power systems, Lifeline batteries have earned a reputation as one of the most reliable AGM battery brands in the world.

Whether you're powering a luxury RV, offshore vessel, renewable energy system, or industrial equipment, the GPL-8DL provides the dependable energy storage needed for extended runtimes and years of service.

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Why Choose the Lifeline GPL-8DL?

Massive 255Ah Deep Cycle Capacity

Designed for substantial energy storage requirements, the GPL-8DL provides extended runtime for large inverter systems, residential-style RV appliances, marine electronics, and off-grid solar applications.

Handcrafted in the USA

Every Lifeline battery is individually manufactured and tested in the United States to ensure industry-leading quality, consistency, and performance.

Military-Proven Technology

Lifeline batteries have passed demanding military specification requirements and are utilized aboard numerous military and commercial marine platforms where dependable power is essential.

Coast Guard Approved

Engineered for marine environments and approved for installation aboard vessels requiring safe, reliable battery systems.

Maintenance-Free AGM Construction

The sealed AGM design eliminates watering requirements while preventing spills, leaks, and corrosion associated with traditional flooded batteries.

Exceptional Reserve Capacity

With industry-leading reserve capacity ratings, the GPL-8DL keeps critical systems running longer during extended trips, offshore excursions, and off-grid operations.

Superior Vibration Resistance

Built to withstand the rigors of marine travel, rough roads, and commercial equipment operation.

Industry-Leading Warranty

Backed by Lifeline's comprehensive 5-Year Warranty, providing confidence in long-term performance and durability.

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Ideal Applications

The Lifeline GPL-8DL is engineered for demanding deep-cycle applications including:

• Luxury Class A Motorhomes

• Diesel Pushers

• High-End Motor Coaches

• Fifth Wheels & Toy Haulers

• Marine House Battery Banks

• Offshore Fishing Boats

• Sailboats & Yachts

• Commercial Marine Vessels

• Off-Grid Solar Systems

• Renewable Energy Storage

• Emergency Backup Power Systems

• Telecommunications Equipment

• Industrial Power Systems

• Mobile Command Centers

• Commercial Vehicle Conversions

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Trusted by Premium RV Manufacturers

Lifeline AGM batteries are frequently specified as original equipment by many luxury coach and recreational vehicle manufacturers, including:

• Airstream

• American Coach

• Country Coach

• Dynamax

• EarthRoamer

• Featherlite

• Four Winds

• Marathon Coach

• Monaco Coach

• Newell Coach

• Newmar

• Renegade RV

• Sportsmobile

• Travel Supreme

• Vantare

• And many other premium coach builders

These manufacturers choose Lifeline because of its reputation for reliability, longevity, and superior deep-cycle performance.

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Key Features

✔ Massive 255Ah Capacity

✔ 12-Volt Group 8D AGM Battery

✔ Heavy-Duty Lug Terminals

✔ Maintenance-Free Operation

✔ Spill-Proof Sealed Design

✔ Coast Guard Approved

✔ Military Specification Proven Technology

✔ Exceptional Deep-Cycle Performance

✔ Fast Recharge Acceptance

✔ Superior Vibration Resistance

✔ Industry-Leading Reserve Capacity

✔ Made in the USA

✔ Backed by a 5-Year Warranty

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Technical Specifications

Specification	Value
Model	GPL-8DL
Battery Type	AGM Deep Cycle
Group Size	8D
Voltage	12 Volts
Capacity (20-Hour Rate)	255Ah
Terminal Type	Lug Terminals
Length	20.76 in (527.4 mm)
Width	10.89 in (276.6 mm)
Height	8.64 in (219.5 mm)
Weight	156 lbs (70.8 kg)
CCA @ 68°F	1,975
CCA @ 32°F	1,675
CCA @ 0°F	1,350
Reserve Capacity @ 25A	550 Minutes
Runtime @ 15A	825 Minutes
Runtime @ 8A	1,670 Minutes
Construction	Sealed AGM
Maintenance	Maintenance-Free
Country of Origin	USA

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Advantages of Lifeline AGM Technology

Lifeline AGM batteries offer significant benefits compared to conventional flooded batteries:

• No maintenance or watering required

• Non-spillable sealed design

• Faster charging efficiency

• Longer storage capability

• Lower self-discharge rates

• Greater vibration resistance

• Improved safety and reliability

• Cleaner installation

• Extended service life

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Built for Extended Runtime

With an impressive 255 amp-hour capacity and up to 1,670 minutes of runtime at 8 amps, the GPL-8DL is ideal for users requiring substantial energy reserves. Whether powering residential appliances in a motorhome, supporting an inverter system, or storing renewable energy, this battery delivers dependable performance when it matters most.

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Invest in Premium American-Made Power

For RV owners, yacht operators, off-grid enthusiasts, and professionals who require maximum reliability, the Lifeline GPL-8DL AGM Deep Cycle Battery remains one of the most respected and trusted power solutions available.

Order Your Lifeline GPL-8DL Today

Experience military-grade durability, exceptional reserve capacity, and maintenance-free AGM performance. Upgrade your power system with the Lifeline GPL-8DL and enjoy dependable energy storage wherever your journey takes you.