Trojan J305-AES M8 279Ah 6V AGM Deep Cycle Solar & Renewable Energy Battery

Trojan's J305-AES M8 features proprietary Advanced Energy Storage (AES) technology delivering exceptional cycle life and reliability for demanding renewable energy applications. This high-capacity 6V 279Ah maintenance-free sealed AGM battery is specifically engineered for off-grid solar systems, telecommunications infrastructure, and industrial backup power requiring dependable deep-cycle performance. It excels in Partial State of Charge (PSoC) conditions when cloudy weather prevents full daily recharging or when systems experience deep overnight discharges—the daily reality of solar installations. The sealed VRLA AGM construction requires zero maintenance—no watering, no hassle—making it ideal for remote installations where service access is impractical. Its non-spillable design allows flexible mounting in challenging locations and is safe for indoor installation. With M8 terminal configuration for secure, high-current connections and proven AES chemistry optimized for solar duty cycles, the J305-AES M8 delivers maximum energy storage, extended cycle life, and proven reliability for off-grid homes, commercial facilities, telecommunications sites, marine vessels, premium RVs, and renewable energy applications requiring deep-cycle capability with minimal maintenance.

Key applications

• Off-grid solar systems – residential homes, cabins, and remote properties requiring reliable daily cycling and multi-day backup capacity.
• Telecommunications infrastructure – cell towers, remote communication sites, and data collection systems requiring long-runtime backup power.
• Industrial and utility backup – critical monitoring equipment, control systems, and remote installations requiring dependable deep-cycle performance.
• Hybrid renewable energy systems – solar/wind/generator combinations requiring batteries optimized for irregular charging patterns.
• Marine and yacht systems – house battery banks for extended cruising, live-aboard vessels, and auxiliary power systems.
• Premium RV and motorhome systems – high-end recreational vehicles with extensive power demands for off-grid capability.
• Commercial renewable energy storage – micro-grids, solar farms, and distributed energy systems requiring scalable battery banks.
• Remote industrial installations – water treatment, pumping systems, agricultural operations, and monitoring sites relying on solar power.

Design & construction

• Sealed AGM (Absorbed Glass Mat) deep-cycle chemistry with proprietary Advanced Energy Storage (AES) technology optimized specifically for renewable energy applications.
• AES technology delivers superior cycle life and reliability under the demanding charge/discharge patterns typical of solar and wind systems.
• Exceptional Partial State of Charge (PSoC) performance thrives during cloudy weather, deep overnight discharges, and irregular charging inherent to renewable energy.
• High-capacity 279Ah design provides substantial energy storage for extended off-grid autonomy and daily deep-cycle use.
• Maintenance-free sealed VRLA design requires zero maintenance—no watering, no electrolyte checks, no terminal corrosion issues.
• Non-spillable construction allows flexible mounting orientations for installation in challenging locations and equipment enclosures.
• M8 terminal configuration provides secure, high-current connections for reliable power delivery and easy battery bank assembly.
• Optimized charge acceptance and low self-discharge rate maximizes system uptime and storage capability during extended periods.
• Robust internal construction designed for long service life in demanding deep-cycle renewable energy applications.
• 6V design allows flexible series/parallel configurations for 12V, 24V, or 48V solar system banks with substantial capacity.
• Safe for indoor installation—no dangerous fumes or acid spills in living or working spaces.
• Environmentally responsible construction using recycled materials and fully recyclable at end of life.

Technical specifications

Capacity: 279 Ah at 20-hour rate
Voltage: 6V
Energy: Approximately 1.67 kWh
Weight: Approximately 88-93 lbs (40-42 kg)
Dimensions (L x W x H): [Confirm exact dimensions]
Group Size: Large format deep-cycle
Chemistry: Sealed AGM (Absorbed Glass Mat) deep-cycle battery with AES technology
Terminal Type: M8 terminals
Product Line: Trojan AES Line
Battery Type: Maintenance-free sealed AGM deep-cycle battery for renewable energy
Cycle Life: Extended cycle life optimized for solar/renewable duty cycles
Self-Discharge: Low self-discharge rate for extended storage capability
Operating Temperature: Wide temperature range for reliable operation in varied climates
Warranty: [Confirm warranty period with regional Trojan/reseller]
Recyclability: Fully recyclable; manufactured using recycled materials
Special Features: Maintenance-free, non-spillable, high-capacity, AES technology, solar-optimized for PSoC operation, M8 terminals for secure connections

Installation & handling

• Maintenance-free sealed design requires zero upkeep—no watering, no terminal cleaning, no electrolyte level checks—ideal for remote and off-grid installations.
• Non-spillable VRLA construction allows flexible mounting for installation in solar enclosures, equipment shelters, and indoor battery rooms.
• Safe for indoor installation in living spaces and facilities—no dangerous acid fumes or spill risks.
• M8 terminals provide secure, high-current connections for reliable power delivery and simplified battery bank assembly.
• High-capacity 279Ah design reduces the number of batteries needed for systems, simplifying installation and reducing connection points.
• 6V configuration allows flexible series/parallel combinations for 12V, 24V, or 48V solar systems with substantial amp-hour capacity.
• AES technology specifically optimized for partial state of charge conditions—perfect for solar systems with variable weather and deep discharge cycles.
• Use a compatible 6V solar/AGM charge controller or charger with proper AGM charging profile to maximize performance and service life.
• Ideal for applications requiring deep-cycle capability, extended autonomy, and minimal maintenance in off-grid or critical installations.
• Heavy battery—ensure proper handling equipment and secure mounting for safe installation.
• Connect multiple J305-AES M8 units in series for higher voltage systems or parallel for increased capacity in large renewable energy banks.