Trojan 27-AES 89Ah 12V DT AGM Deep Cycle Marine, RV & Solar Battery

Trojan's 27-AES features proprietary Advanced Energy Storage (AES) technology delivering up to 3x the cycle life of standard AGM batteries—validated at 1,200 cycles at 100% depth of discharge versus 400 cycles for conventional AGM. This compact 12V 89Ah maintenance-free sealed AGM battery is specifically engineered for demanding marine, RV, and renewable energy applications requiring reliable deep-cycle performance in the popular BCI Group 27 footprint. It excels in Partial State of Charge (PSoC) conditions when irregular charging patterns prevent full daily recharging—the reality of boats, recreational vehicles, and solar installations. The sealed VRLA AGM construction requires zero maintenance—no watering, no hassle—making it ideal for marine vessels, RVs, and remote installations where service access is impractical. Its non-spillable design allows horizontal or vertical mounting in confined spaces and meets regulatory requirements for safe indoor use in vessels, vehicles, and facilities. The rugged polypropylene case provides superior impact, shock, and vibration resistance for harsh marine and mobile environments. With low internal resistance for improved charge acceptance and discharge efficiency, operating temperature range from -40°F to 140°F, and proven AES chemistry optimized for daily deep cycling, the 27-AES delivers maximum energy storage, extended cycle life, and proven reliability for marine house banks, RVs, off-grid solar systems, floor scrubbers, golf carts, telecommunications, and backup power requiring compact 12V deep-cycle capability in the industry-standard Group 27 format with minimal maintenance.

Key applications

• Marine house banks – auxiliary power for boats, yachts, sailboats, and fishing vessels needing reliable energy for electronics, navigation, lights, and onboard systems.
• RV and motorhome systems – recreational vehicles requiring deep-cycle house battery power for off-grid camping, extended travel, and boondocking.
• Small off-grid solar systems – compact residential installations, cabins, and remote properties requiring reliable daily energy storage.
• Commercial floor care equipment – floor scrubbers and cleaning machines requiring daily deep-discharge cycling in compact format.
• Golf carts and utility vehicles – electric golf carts, personnel carriers, and light industrial vehicles in 12V configurations.
• Backup power and telecommunications – remote monitoring, communication sites, and emergency backup systems requiring maintenance-free power.
• Renewable energy and micro-grids – small solar installations and hybrid systems where compact 12V batteries are preferred.
• Transportation auxiliary power – work vans, trucks, and mobile equipment requiring house battery power in standard Group 27 trays.

Design & construction

• Sealed AGM (Absorbed Glass Mat) deep-cycle chemistry with proprietary Advanced Energy Storage (AES) technology optimized for marine, RV, and renewable energy applications.
• AES technology delivers 3x the cycle life of standard AGM batteries—1,200 cycles at 100% depth of discharge validated versus 400 cycles for conventional AGM.
• Compact BCI Group 27 footprint (approximately 12.06" × 6.81" × 8.95") fits standard battery trays in marine, RV, commercial equipment, and vehicle applications.
• Exceptional Partial State of Charge (PSoC) performance thrives during irregular charging, opportunity charging, and deep discharge cycles typical of marine, RV, and solar use.
• High-capacity 89Ah (approximately 86Ah nominal) at 20-hour rate provides substantial energy storage (approximately 1.07 kWh) in compact 12V format.
• Maintenance-free sealed VRLA design requires zero maintenance—no watering, no electrolyte checks, no terminal corrosion issues—reducing operating costs.
• Non-spillable construction allows horizontal or vertical mounting for flexible installation and meets regulatory requirements for safe indoor use.
• Rugged polypropylene case provides superior impact, shock, and vibration resistance for harsh marine, mobile, and outdoor environments.
• Low internal resistance delivers improved charge acceptance, discharge efficiency, and faster recharge times for maximum performance.
• Extended temperature range from -40°F to 140°F (-40°C to 60°C) for reliable operation from cold climates to hot engine compartments.
• Optimized charge acceptance and low self-discharge rate (less than 3% per month) maximizes system uptime and storage capability.
• Safe for indoor installation—no dangerous fumes or acid spills in vessels, vehicles, facilities, or enclosed compartments.
• Built using 80% recycled materials and 99% recyclable for environmental sustainability and responsible end-of-life disposal.
• Industry-standard Group 27 size ensures compatibility with existing battery trays and widespread availability of mounting hardware.

Technical specifications

Capacity: 89 Ah (approximately 86 Ah nominal) at 20-hour rate
Voltage: 12V
Energy: Approximately 1.07 kWh
Weight: Approximately 58-62 lbs (26-28 kg)
Dimensions (L x W x H): Approximately 12.06" × 6.81" × 8.95" (306 mm × 173 mm × 227 mm)
Group Size: BCI Group 27
Chemistry: Sealed AGM (Absorbed Glass Mat) deep-cycle battery with AES technology
Terminal Type: Standard terminals
Product Line: Trojan AES Line
Battery Type: Maintenance-free sealed AGM deep-cycle battery for marine, RV, and renewable energy
Cycle Life: 1,200 cycles at 100% depth of discharge; 3x standard AGM cycle life
Self-Discharge: Less than 3% per month for extended storage capability
Operating Temperature: -40°F to 140°F (-40°C to 60°C)
Warranty: 3-year warranty
Recyclability: 99% recyclable; manufactured using 80% recycled materials
Special Features: Maintenance-free, non-spillable, compact Group 27 size, AES technology, optimized for PSoC operation, low internal resistance, extreme temperature capability, regulatory compliant

Installation & handling

• Maintenance-free sealed design requires zero upkeep—no watering, no terminal cleaning, no electrolyte level checks—reducing operating costs and labor.
• Compact BCI Group 27 footprint fits standard battery trays in marine vessels, RVs, floor scrubbers, golf carts, and commercial vehicles for easy drop-in replacement.
• Non-spillable VRLA construction allows horizontal or vertical mounting for flexible installation in confined spaces, equipment compartments, and challenging locations.
• Meets regulatory requirements for safe indoor use in marine vessels, recreational vehicles, facilities, and enclosed spaces.
• Rugged polypropylene case withstands impact, shock, and vibration in harsh marine, mobile, and outdoor environments.
• Safe for indoor installation in vessels, vehicles, facilities, and enclosed equipment compartments—no dangerous acid fumes or spill risks.
• Low internal resistance enables faster charging and improved discharge efficiency for maximum performance and reduced charging time.
• AES technology specifically optimized for partial state of charge conditions—perfect for opportunity charging, irregular use, and variable solar weather.
• Use a compatible 12V AGM charger with proper charging profile to maximize performance and service life in marine, RV, or renewable energy applications.
• Extreme temperature capability (-40°F to 140°F) enables reliable operation in cold climates, hot engine compartments, and outdoor installations.
• 12V configuration simplifies installation compared to series-connected 6V batteries and reduces connection points for improved system reliability.
• Connect multiple 27-AES units in series for 24V or 48V solar system configurations, or parallel for increased capacity in larger marine or RV installations.
• Industry-standard Group 27 size ensures compatibility with existing mounting hardware and widespread availability of battery boxes and trays.
• Moderate weight (58-62 lbs) allows for easier handling compared to larger Group 31 batteries while still providing substantial capacity.