Lifeline GPL-8DA Heavy-Duty Marine & RV Deep-Cycle AGM Battery (12V, 255Ah)

The Ultimate Powerhouse. Military-Grade, Master-Crafted Deep Cycle Performance.

When compromising on power isn’t an option, the Lifeline GPL-8DA stands alone. This is an elite-level, massive 8D AGM battery engineered for massive power storage, maximum depth of discharge, and relentless reliability.

Handcrafted in the USA, Lifeline batteries are built to elite U.S. Military milestone specifications, serving onboard active military vessels. Whether you are outfitting a luxury yacht, a commercial fishing vessel, a large-scale off-grid solar setup, or a class-A motorhome, the GPL-8DA delivers industry-leading reserve capacities and an incredibly long life cycle that leaves conventional batteries in the dust.

The Lifeline Advantage: Engineered to Outperform

• Ultra-Low Self-Discharge: Features an industry-leading 2% per month self-discharge rate (at 77°F / 25°C). Conventional batteries lose 10%+ per month. Store your vehicle or vessel longer without worrying about a dead battery.

• U.S. Coast Guard Approved & DOT HazMat Exempt: Fully sealed, spill-proof, and completely maintenance-free. No adding water, no toxic acid fumes, and zero corrosion.

• Handmade in the USA: Manufactured with premium materials and proprietary processes that ensure unmatched structural integrity against heavy shock and vibration.

• Massive 255Ah Capacity: Built to comfortably run heavy loads, marine electronics, appliances, and inverters for extended periods.

• Industry-Leading 5-Year Warranty: Backed by a standard-setting 5-year limited warranty (12 Months Free Replacement / 60 Months Pro-Rated for Marine & RV applications).

Technical Specifications (GPL-8DA)

Power & Discharge Performance

Cranking Amps

• @ 68°F (20°C): 1975 Amps

• @ 32°F (0°C): 1675 Amps

• @ 0°F (-18°C): 1350 Amps

Minutes of Discharge

• 25 Amp Load: 550 Minutes

• 15 Amp Load: 825 Minutes

• 8 Amp Load: 1670 Minutes