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Marine Deep Cycle Solar Batteries

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In stock

Trojan Motive T-105 225Ah 6V Flooded ELPT/EUT Deep-Cycle Battery with Bayonet Cap

  • AMP Hours225Ah
  • TypeLead Acid

Pickup on Fri, Dec 5 from Ft. Myers, FL

Delivery on Dec 10–15

In stock

Trojan Motive T-875 170Ah 8V Flooded ELPT Deep-Cycle Battery with Bayonet Cap

  • AMP Hours170Ah
  • TypeLead Acid

Pickup on Fri, Dec 5 from Miami, FL

Delivery on Dec 10–15

Limited stock

Trojan Motive 24-AES 76Ah 12V AGM DT Deep-Cycle Battery

  • AMP Hours76Ah
  • TypeLead Acid

Pickup on Fri, Dec 5 from Orlando, FL

Delivery on Dec 10–15

Limited stock
Customer Choice

Trojan Solar SAES-06-220 209Ah 6V AGM LT Deep-Cycle Battery

  • AMP Hours209Ah
  • TypeLead Acid

Pickup on Fri, Dec 5 from Miami, FL

Delivery on Dec 10–15

In stock

Trojan Motive T105-AES 207Ah 6V AGM M8 Deep-Cycle Battery

  • AMP Hours207Ah
  • TypeLead Acid

Pickup on Fri, Dec 5 from Miami, FL

Delivery on Dec 10–15

In stock

Trojan Motive T-1275 150Ah 12V Flooded ELPT Deep-Cycle Battery with Master Vent

  • AMP Hours150Ah
  • TypeLead Acid

Pickup on Fri, Dec 5 from Ft. Myers, FL

Delivery on Dec 10–15

In stock

MK Battery DEKA 8G27-HFL-DEKA Gel Deep Cycle Lead-Acid Storage Battery 12V

  • AMP Hours88Ah
  • TypeLead Acid

Delivery on Dec 10–15

Limited stock

Trojan Motive 27-AES 89Ah 12V AGM DT Deep-Cycle Battery

  • AMP Hours89Ah
  • TypeLead Acid

Pickup on Fri, Dec 5 from Miami, FL

Delivery on Dec 10–15

In stock

MK Battery DEKA 8L16-DEKA Flooded Lead-Acid Storage Battery 6V

  • AMP Hours370Ah
  • TypeLead Acid

Delivery on Dec 10–15

In stock

MK Battery DEKA 8G31-HST-DEKA Gel Deep Cycle Lead-Acid Storage Battery 12V

  • AMP Hours97.6Ah
  • TypeLead Acid

Delivery on Dec 10–15

Limited stock

Trojan Solar SAES-12-105 107Ah 12V AGM LT Deep-Cycle Battery

  • AMP Hours107Ah
  • TypeLead Acid

Pickup on Fri, Dec 5 from Miami, FL

Delivery on Dec 10–15

Limited stock

Trojan Motive 31-AES 102Ah 12V AGM DT Deep-Cycle Battery

  • AMP Hours102Ah
  • TypeLead Acid

Pickup on Fri, Dec 5 from Miami, FL

Delivery on Dec 10–15

Limited stock

Trojan Motive 31-AES 102Ah 12V AGM M8 Deep-Cycle Battery

  • AMP Hours102Ah
  • TypeLead Acid

Pickup on Fri, Dec 5 from Orlando, FL

Delivery on Dec 10–15

Limited stock

Trojan Motive T875-AES 158Ah 8V AGM M8 Deep-Cycle Battery

  • AMP Hours158Ah
  • TypeLead Acid

Pickup on Fri, Dec 5 from Miami, FL

Delivery on Dec 10–15

Limited stock

Trojan Solar SAES-12-135 134Ah 12V AGM LT Deep-Cycle Battery

  • AMP Hours134Ah
  • TypeLead Acid

Pickup on Fri, Dec 5 from Tampa, FL

Delivery on Dec 10–15

Limited stock

Trojan Motive T1275-AES 130Ah 12V AGM M8 Deep-Cycle Battery

  • AMP Hours130Ah
  • TypeLead Acid

Pickup on Fri, Dec 5 from Miami, FL

Delivery on Dec 10–15

Limited stock

Trojan Solar SAES-06-315 285Ah 6V AGM LT Deep-Cycle Battery

  • AMP Hours285Ah
  • TypeLead Acid

Pickup on Fri, Dec 5 from Miami, FL

Delivery on Dec 10–15

Limited stock

Trojan Motive J305-AES 279Ah 6V AGM DT Deep-Cycle Battery

  • AMP Hours279Ah
  • TypeLead Acid

Pickup on Fri, Dec 5 from Miami, FL

Delivery on Dec 10–15

Limited stock

Trojan Motive J305-AES 279Ah 6V AGM M8 Deep-Cycle Battery

  • AMP Hours279Ah
  • TypeLead Acid

Pickup on Fri, Dec 5 from Miami, FL

Delivery on Dec 10–15

Limited stock

Trojan Solar SAES-06-375 364Ah 6V AGM LT Deep-Cycle Battery

  • AMP Hours364Ah
  • TypeLead Acid

Pickup on Fri, Dec 5 from Miami, FL

Delivery on Dec 10–15

Limited stock

Trojan Motive L16-AES 325Ah 6V AGM DT Deep-Cycle Battery

  • AMP Hours355Ah
  • TypeLead Acid

Delivery on Dec 10–15

Limited stock

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

  • AMP Hours175Ah
  • TypeLead Acid

Pickup on Fri, Dec 5 from Miami, FL

Delivery on Dec 10–15

Limited stock

Trojan Solar SAES-12-205 179Ah 12V AGM LT Deep-Cycle Battery

  • AMP Hours179Ah
  • TypeLead Acid

Pickup on Fri, Dec 5 from Miami, FL

Delivery on Dec 10–15

Limited stock

Trojan Motive J185-AES 175Ah 12V AGM M8 Deep-Cycle Battery

  • AMP Hours175Ah
  • TypeLead Acid

Pickup on Fri, Dec 5 from Miami, FL

Delivery on Dec 10–15

In stock

MK Battery DEKA 8A8D-LTP-DEKA AGM Lead-Acid Storage Battery 12V

  • AMP Hours245Ah
  • TypeLead Acid

Delivery on Dec 10–15

In stock

MK Battery DEKA 8G8D-HLT-DEKA Gel Deep Cycle Lead-Acid Storage Battery 12V

  • AMP Hours225Ah
  • TypeLead Acid

Delivery on Dec 10–15

Limited stock

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

  • AMP Hours57Ah
  • TypeLiFePO4

Delivery on Dec 12–17

Limited stock

MK Battery Deka 5.3kWh 100Ah 48V Lithium Iron Phosphate Battery DD5300

  • AMP Hours100Ah
  • TypeLiFePO4

Delivery on Dec 10–15

Limited stock
Customer Choice

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

  • AMP Hours75Ah
  • TypeLiFePO4

Delivery on Dec 12–17

Limited stock

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

  • AMP Hours150Ah
  • TypeLiFePO4

Delivery on Dec 12–17

Limited stock

SimpliPHI 3.8 48V Lithium Ferro Phosphate Battery with Integrated BMS w/ Communications (by Briggs & Stratton)

  • AMP Hours75Ah
  • TypeLiFePO4

Delivery on Dec 12–17

In stock

SimpliPHI 6.6 48V Lithium Ferro Phosphate Stackable Battery (by Briggs & Stratton)

  • AMP Hours130Ah
  • TypeLiFePO4

Delivery on Dec 12–17

Limited stock

Trojan Lithium OnePack High Performance TR-48-170-HP 171Ah 51.2V M8 LiFePO4 Battery

  • AMP Hours171Ah
  • TypeLiFePO4

Pickup on Fri, Dec 5 from Orlando, FL

Delivery on Dec 10–15

Limited stock

Fortress Power Evault Max 18.5 kWh Lithium Battery Storage

  • AMP Hours150Ah
  • TypeLithium Ion

Delivery on Dec 10–15

  • 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

Upgrade Your Marine Power

Calculate cost per usable amp-hour, not just sticker price. Match battery chemistry to your actual usage patterns for maximum ROI.

Shop Marine Battery

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