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Marine Batteries

Limited stock
Trojan Motive T-105 Plus SV 225Ah 6V Deep-Cycle Flooded Battery for Solar, RV, Marine & Golf CartsTrojan Motive T-105 Plus SV 225Ah 6V Deep-Cycle Flooded Battery for Solar, RV, Marine & Golf Carts

Trojan Motive T-105 Plus SV 225Ah 6V Deep-Cycle Flooded Battery for Solar, RV, Marine & Golf Carts

  • AMP Hours225 Ah
  • ChemistryLead Acid, Flooded

Delivery on Mar 23–26

Limited stock
Trojan Motive 27TMH 115Ah 12V Deep-Cycle Battery for Solar & MarineTrojan Motive 27TMH 115Ah 12V Deep-Cycle Battery for Solar & Marine

Trojan Motive 27TMH 115Ah 12V Deep-Cycle Battery for Solar & Marine

  • AMP Hours115 Ah
  • ChemistryLead Acid, Flooded

Delivery on Mar 23–26

Limited stock
Trojan Motive T-125 EHPT MasterVent 240Ah 6V Deep-Cycle Flooded Battery for Golf Carts, Solar, RV & MarineTrojan Motive T-125 EHPT MasterVent 240Ah 6V Deep-Cycle Flooded Battery for Golf Carts, Solar, RV & Marine

Trojan Motive T-125 EHPT MasterVent 240Ah 6V Deep-Cycle Flooded Battery for Golf Carts, Solar, RV & Marine

  • AMP Hours240 Ah
  • ChemistryLead Acid, Flooded

Delivery on Mar 23–26

Limited stock
Trojan Motive T-145 EHPT Bayonet 260Ah 6V Deep-Cycle Flooded Battery for Industrial, Solar & MarineTrojan Motive T-145 EHPT Bayonet 260Ah 6V Deep-Cycle Flooded Battery for Industrial, Solar & Marine

Trojan Motive T-145 EHPT Bayonet 260Ah 6V Deep-Cycle Flooded Battery for Industrial, Solar & Marine

  • AMP Hours260 Ah
  • ChemistryLead Acid, Flooded

Delivery on Mar 23–26

Limited stock
Trojan Motive T-145 EHPT MV 260Ah 6V Deep-Cycle Flooded Battery for Industrial, Solar & MarineTrojan Motive T-145 EHPT MV 260Ah 6V Deep-Cycle Flooded Battery for Industrial, Solar & Marine

Trojan Motive T-145 EHPT MV 260Ah 6V Deep-Cycle Flooded Battery for Industrial, Solar & Marine

  • AMP Hours260 Ah
  • ChemistryLead Acid, Flooded

Delivery on Mar 23–26

Limited stock
Trojan Motive T-145EUT Bayonet Universal Terminal 260Ah 6V Deep-Cycle Flooded Battery for Fleet & IndustrialTrojan Motive T-145EUT Bayonet Universal Terminal 260Ah 6V Deep-Cycle Flooded Battery for Fleet & Industrial

Trojan Motive T-145EUT Bayonet Universal Terminal 260Ah 6V Deep-Cycle Flooded Battery for Fleet & Industrial

  • AMP Hours260 Ah
  • ChemistryLead Acid, Flooded

Delivery on Mar 23–26

Limited stock
Trojan OverDrive AES-31 104Ah 12V AGM Deep-Cycle Battery for Trucks, Marine & RV Auxiliary PowerTrojan OverDrive AES-31 104Ah 12V AGM Deep-Cycle Battery for Trucks, Marine & RV Auxiliary Power

Trojan OverDrive AES-31 104Ah 12V AGM Deep-Cycle Battery for Trucks, Marine & RV Auxiliary Power

  • AMP Hours104 Ah
  • ChemistryLead Acid, AGM

Delivery on Mar 23–26

Limited stock
Trojan Motive J250P DT 250Ah 6V Deep-Cycle Battery for Floor Machines, Aerial Lifts & Multi-PurposeTrojan Motive J250P DT 250Ah 6V Deep-Cycle Battery for Floor Machines, Aerial Lifts & Multi-Purpose

Trojan Motive J250P DT 250Ah 6V Deep-Cycle Battery for Floor Machines, Aerial Lifts & Multi-Purpose

  • AMP Hours250 Ah
  • ChemistryLead Acid, Flooded

Delivery on Mar 23–26

Limited stock
Trojan 27-AES LBL 89Ah 12V AGM Battery for Aerial Lifts, Floor Machines, Marine & RV - 3X Cycle LifeTrojan 27-AES LBL 89Ah 12V AGM Battery for Aerial Lifts, Floor Machines, Marine & RV - 3X Cycle Life

Trojan 27-AES LBL 89Ah 12V AGM Battery for Aerial Lifts, Floor Machines, Marine & RV - 3X Cycle Life

  • AMP Hours89 Ah
  • ChemistryLead Acid, AGM

Delivery on Mar 23–26

Limited stock
Customer Choice
Trojan Motive 31-AES DT 102Ah 12V AGM Deep Cycle Marine, RV & Floor Scrubber BatteryTrojan Motive 31-AES DT 102Ah 12V AGM Deep Cycle Marine, RV & Floor Scrubber Battery

Trojan Motive 31-AES DT 102Ah 12V AGM Deep Cycle Marine, RV & Floor Scrubber Battery

  • AMP Hours102 Ah
  • ChemistryLead Acid, AGM

Delivery on Mar 23–26

Limited stock
Trojan Motive 31-AES Overdrive 102Ah 12V AGM Deep-Cycle Battery Maintenance-Free Solar & IndustrialTrojan Motive 31-AES Overdrive 102Ah 12V AGM Deep-Cycle Battery Maintenance-Free Solar & Industrial

Trojan Motive 31-AES Overdrive 102Ah 12V AGM Deep-Cycle Battery Maintenance-Free Solar & Industrial

  • AMP Hours102 Ah
  • ChemistryLead Acid, AGM

Delivery on Mar 23–26

Limited stock
Trojan Motive 6V-GEL 189Ah 6V Sealed Gel Battery for Golf Carts & SolarTrojan Motive 6V-GEL 189Ah 6V Sealed Gel Battery for Golf Carts & Solar

Trojan Motive 6V-GEL 189Ah 6V Sealed Gel Battery for Golf Carts & Solar

  • AMP Hours189 Ah
  • ChemistryLead Acid, Gel

Delivery on Mar 23–26

Limited stock
Trojan Motive J185H-AC Universal Terminal 225Ah 12V Deep-Cycle Battery for Material Handling, Solar & MarineTrojan Motive J185H-AC Universal Terminal 225Ah 12V Deep-Cycle Battery for Material Handling, Solar & Marine

Trojan Motive J185H-AC Universal Terminal 225Ah 12V Deep-Cycle Battery for Material Handling, Solar & Marine

  • AMP Hours225 Ah
  • ChemistryLead Acid, Flooded

Delivery on Mar 23–26

Limited stock
Trojan Motive J185-AES 175Ah 12V AGM DT Deep-Cycle BatteryTrojan Motive J185-AES 175Ah 12V AGM DT Deep-Cycle Battery

Trojan Motive J185-AES 175Ah 12V AGM DT Deep-Cycle Battery

  • AMP Hours175 Ah
  • ChemistryLead Acid, AGM

Delivery on Mar 23–26

Limited stock
Fullriver DC400-6 L16 415Ah 6V AGM Deep‑Cycle BatteryFullriver DC400-6 L16 415Ah 6V AGM Deep‑Cycle Battery

Fullriver DC400-6 L16 415Ah 6V AGM Deep‑Cycle Battery

  • AMP Hours415 Ah
  • ChemistryAGM

Delivery on Mar 23–26

Limited stock
Trojan 8D-AGM Dual Terminal 230Ah 12V Dual-Purpose AGM Battery for Marine, RV & IndustrialTrojan 8D-AGM Dual Terminal 230Ah 12V Dual-Purpose AGM Battery for Marine, RV & Industrial

Trojan 8D-AGM Dual Terminal 230Ah 12V Dual-Purpose AGM Battery for Marine, RV & Industrial

  • AMP Hours230 Ah
  • ChemistryLead Acid, AGM

Delivery on Mar 23–26

Limited stock
SimpliPHI 1.4 kWh 24V Lithium Ferro Phosphate Battery (by Briggs & Stratton)SimpliPHI 1.4 kWh 24V Lithium Ferro Phosphate Battery (by Briggs & Stratton)

SimpliPHI 1.4 kWh 24V Lithium Ferro Phosphate Battery (by Briggs & Stratton)

  • AMP Hours57 Ah
  • ChemistryLithium, LiFePO4

Delivery on Mar 25–30

Limited stock
SimpliPHI 3.8 kWh 48V Lithium Ferro Phosphate Battery (by Briggs & Stratton)SimpliPHI 3.8 kWh 48V Lithium Ferro Phosphate Battery (by Briggs & Stratton)

SimpliPHI 3.8 kWh 48V Lithium Ferro Phosphate Battery (by Briggs & Stratton)

  • AMP Hours75 Ah
  • ChemistryLithium, LiFePO4

Delivery on Mar 25–30

Limited stock
SimpliPHI 3.8 kWh 24V Lithium Ferro Phosphate Battery (by Briggs & Stratton)SimpliPHI 3.8 kWh 24V Lithium Ferro Phosphate Battery (by Briggs & Stratton)

SimpliPHI 3.8 kWh 24V Lithium Ferro Phosphate Battery (by Briggs & Stratton)

  • AMP Hours150 Ah
  • ChemistryLithium, LiFePO4

Delivery on Mar 25–30

Limited stock
SimpliPHI 3.8 kWh LFP 48V Battery with Integrated BMS w/ Communications (by Briggs & Stratton)SimpliPHI 3.8 kWh LFP 48V Battery with Integrated BMS w/ Communications (by Briggs & Stratton)

SimpliPHI 3.8 kWh LFP 48V Battery with Integrated BMS w/ Communications (by Briggs & Stratton)

  • AMP Hours75 Ah
  • ChemistryLithium, LiFePO4

Delivery on Mar 25–30

In stock
SimpliPHI 6.6 Battery 6.65kWh LFP 48V Stackable (by Briggs & Stratton)SimpliPHI 6.6 Battery 6.65kWh LFP 48V Stackable (by Briggs & Stratton)

SimpliPHI 6.6 Battery 6.65kWh LFP 48V Stackable (by Briggs & Stratton)

  • AMP Hours130 Ah
  • ChemistryLithium, LiFePO4

Delivery on Mar 25–30

  • Overview
  • Articles

Marine Battery For Sale

Choosing the right marine battery impacts your vessel's reliability, operating costs, and performance. Understanding the differences between AGM and lithium technology helps you make a smart investment that pays off over years of use.

Total Cost of Ownership: 7-Year Comparison

Cost Factor AGM Battery Lithium Battery
Initial Investment (100Ah) $400 $700
Replacement Cycles 2 replacements needed No replacement
Total 7-Year Cost $1,200 $700
Usable Capacity 80Ah (80% depth) 100Ah (100% depth)
Cost per Usable Ah $15.00 $7.00

Lithium batteries weigh 60-70% less than AGM while delivering 3,000-5,000 cycles versus 500-800 cycles for AGM. For vessels operating 100 days annually, lithium pays for itself within 3 years.

Performance Specifications

Specification AGM Lithium LiFePO4
Cycle Life 600-800 3,000-5,000
Recharge Time (0-80%) 5-8 hours 2-3 hours
Weight (100Ah) 67 lbs 28 lbs
Service Life 4-7 years 8-12 years
Maintenance Quarterly inspection None required
Cold Weather Performance Excellent Requires heating system

Which Battery For Your Boat?

Vessel Type Usage Best Choice Why
Weekend Fishing 2-4 days/month AGM Lower cost, adequate cycles
Charter Fishing 5-7 days/week Lithium Fast recharge, no downtime
Tournament Bass 50-100 days/year Lithium Weight savings, shallow draft
Sailboat Seasonal AGM Cold-weather reliability
Expert Tip

An operator cycling batteries 200 days yearly reaches AGM's limit in 3 years, while lithium continues 15-25 years. For commercial operations, lithium delivers clear ROI advantages.

— Marine Power Solutions, Technical Division

Charging Requirements

⚡ AGM Charging:

Voltage: 14.4-14.8V absorption

Time: 5-8 hours to 80%

Compatible: Standard marine chargers

Note: Works with pre-2020 alternators

⚡ Lithium Charging:

Voltage: 14.2-14.4V (tighter tolerance)

Time: 2-3 hours to 80%

Requires: BMS-compatible charger

Note: May need alternator upgrade ($300-500)

Calculate Your Battery Capacity

Total your electrical loads, multiply by operating hours, then add 30% safety margin:

Equipment Draw Hours Total Ah
Trolling Motor (55lb) 45A 4h 180 Ah
Fish Finder 1.5A 8h 12 Ah
VHF Radio 2A 8h 16 Ah
Navigation Lights 3A 3h 9 Ah
Livewell Pump 5A 6h 30 Ah
Subtotal 30% Margin 321 Ah

📊 Battery Needed: AGM requires 400Ah (two Group 31 batteries). Lithium needs 320Ah (two 160Ah batteries at 60% less weight).

Marine Battery Protection Features

🔧 Critical Features:

Vibration: MIL-STD-810G certified (15G shocks)

Terminals: Tin-coated copper (37% longer life)

Case: Sealed, impact-resistant

⚡ Safety Standards:

Lithium BMS: Thermal protection, cell balancing

Certifications: ABYC E-13, UL 1236

Rating: IP67 waterproof

ROI Analysis: When Lithium Wins

Annual Usage AGM Cost (7 years) Lithium Cost (7 years) Savings
50 days/year $1,200 $700 $500
100 days/year $1,600 $700 $900
200 days/year $2,400 $700 $1,700

Common Questions

Can I replace AGM with lithium directly?

Most boats need charging system upgrades. Engines before 2020 typically require voltage regulator adjustments or new alternators ($300-500). Lithium needs 14.2-14.4V charging profiles versus AGM's 14.4-14.8V.

What capacity for my trolling motor?

Formula: Motor amps × hours 30% margin. Example: 55lb motor = 45A × 4 hours = 180Ah 30% = 234Ah minimum. AGM needs 293Ah rated (80% usable), lithium needs 234Ah (100% usable).

How to prevent saltwater corrosion?

Apply dielectric grease quarterly to all connections. Clean terminals monthly with baking soda solution. Use marine-grade tin-coated terminals (37% better corrosion resistance). Install ventilation in battery compartments.

Are lithium batteries safe on boats?

Yes, with ABYC E-13 certification. Marine lithium includes BMS with thermal protection, cell balancing, and IP67 waterproofing. Premium units provide 60 minutes thermal stability. Always verify UN38.3 compliance.

Make Your Choice

Choose AGM

✓ Seasonal or weekend use (2-4 days/month)

✓ Cold weather operation below 32°F

✓ Existing charging system (pre-2020)

✓ Lowest upfront investment

✓ Simple installation

Choose Lithium

✓ Frequent use (100 days/year)

✓ Limited battery space

✓ Shallow-draft requirements

✓ Fast turnaround between trips

✓ Zero maintenance preferred

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