Lifeline GPL-6CT Heavy-Duty Marine & RV Deep-Cycle AGM Battery (6V, 300Ah)

Elite Power for Deep-Cycle Applications. Handcrafted in the USA. Please allow 2 weeks for delivery

When your off-grid system or luxury vessel demands maximum energy storage, the Lifeline GPL-6CT delivers relentless reliability. This premium 6-volt AGM battery is engineered specifically for high-capacity deep-cycle applications, making it the preferred choice for commercial marine vessels, luxury RV house banks, and off-grid solar setups.

Handcrafted from start to finish in the USA, Lifeline batteries are built to elite standards. They don't just meet consumer expectations—they pass rigorous U.S. Military milestone specifications and serve onboard numerous active military vehicles and vessels. If you are building a high-capacity 12V, 24V, or 48V battery bank, the GPL-6CT provides the industry-leading reserve capacity and extreme life-cycle capabilities you need.

Why Choose the Lifeline GPL-6CT?

• U.S. Coast Guard Approved: Fully certified for harsh marine safety and superior vibration resistance.

• Massive 300Ah Capacity: Engineered to comfortably run heavy electrical loads, inverters, and appliances for extended periods.

• Military-Grade Durability: Designed to withstand intense shock, heavy vibration, and demanding environmental conditions.

• 100% Maintenance-Free AGM Design: Fully sealed and spill-proof. No adding water, no acid leaks, and zero terminal corrosion.

• Industry-Leading 5-Year Warranty: Backed by an exceptional 5-year limited protection plan to give you ultimate peace of mind.

Technical Specifications

Power & Discharge Performance

Cranking Amps

• @ 68°F (20°C): 1150 Amps

• @ 32°F (0°C): 1025 Amps

• @ 0°F (-18°C): 925 Amps

Minutes of Discharge

• 25 Amp Load: 692 Minutes

• 15 Amp Load: 1200 Minutes

• 8 Amp Load: 2205 Minutes

Industry-Leading 5-Year Limited Warranty

Lifeline stands behind their premium craftsmanship with up to 60 months of total protection, precisely tailored to how you use your battery: