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Marine and Boat Battery

Marine & Boat Batteries Built for Performance and Reliability

When you're out on the water, the last thing you want is battery trouble. At Batteries Plus, we carry a wide selection of marine batteries designed to deliver dependable power for boats of all sizes. Whether you need a deep cycle battery for extended trolling, a dual-purpose option for starting and cycling, or just a battery to start the engine, we have you covered with trusted brands like Duracell, X2Power, and Odyssey.

From fishing boats and personal watercraft to sailboats and yachts, we offer 12V marine batteries (AGM, Lithium, and flooded) options that stand up to vibration, waves, and long days on the water. Shop by group size, cold cranking amps (CCA), and many other filters to find the right fit for your vessel.

Find your perfect marine battery today and enjoy smooth sailing with every start.

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Showing 12 of 29

Showing 12 of 29

 Longer Run Time

Duracell Ultra BCI Group 31M 12V 110AH 800CCA AGM Deep Cycle Marine & RV Battery

 Longer Run Time

  • From Our Experts:

    A high powered, reliable and durable AGM battery for your boat or RV

  • Brand:
    Duracell Ultra
  • Format:
    BCI Group 31M
  • Cold Cranking Amps:
    800
  • Terminal Type:
    DT, SAE/M8 Stud, SAE/M8 Threaded Post, WNT
289 dollars 99 cents
Refundable Core Deposit: 27 dollars

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Purchase Options for SLI31DTMAGMDC
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Compare Product VI1292954

 Value for the Money

Duracell Ultra BCI Group 24M 12V 75AH 500CCA Flooded Deep Cycle Marine & RV Battery

 Value for the Money

  • From Our Experts:

    A conventional deep cycle replacement battery from a brand you can trust

  • Brand:
    Duracell Ultra
  • Format:
    BCI Group 24M
  • Cold Cranking Amps:
    500
  • Terminal Type:
    DT, SAE/M8 Stud, SAE/M8 Threaded Post, WNT
129 dollars 99 cents
Refundable Core Deposit: 22 dollars

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Purchase Options for SLI24MDC
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Compare Product VI33806

 Value for the Money

Duracell Ultra BCI Group 31M 12V 105AH 650CCA Flooded Deep Cycle Marine & RV Battery

 Value for the Money

  • From Our Experts:

    A conventional deep cycle replacement battery from a brand you can trust

  • Brand:
    Duracell Ultra
  • Format:
    BCI Group 31M
  • Cold Cranking Amps:
    650
  • Terminal Type:
    DT, SAE/M8 Stud, SAE/M8 Threaded Post, WNT
159 dollars 99 cents
Refundable Core Deposit: 27 dollars

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Purchase Options for SLI31MDC
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Compare Product VI33840

 Value for the Money

Duracell Ultra BCI Group 27M 12V 90AH 575CCA Flooded Deep Cycle Marine & RV Battery

 Value for the Money

  • From Our Experts:

    A conventional deep cycle replacement battery from a brand you can trust

  • Brand:
    Duracell Ultra
  • Format:
    BCI Group 27M
  • Cold Cranking Amps:
    575
  • Terminal Type:
    DT, SAE/M8 Stud, SAE/M8 Threaded Post, WNT
139 dollars 99 cents
Refundable Core Deposit: 22 dollars

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Purchase Options for SLI27MDC
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 Value for the Money

Duracell Ultra BCI Group 24M 12V 550CCA Flooded Dual Purpose Marine & RV Battery

 Value for the Money

  • From Our Experts:

    A powerful battery you can use for both starting and deep cycle applications

  • Brand:
    Duracell Ultra
  • Format:
    BCI Group 24M
  • Cold Cranking Amps:
    550
  • Terminal Type:
    DT, SAE/M8 Stud, SAE/M8 Threaded Post, WNT
119 dollars 99 cents
Refundable Core Deposit: 22 dollars

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Purchase Options for SLI24MDP
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 Longer Run Time

Duracell Ultra BCI Group 27M 12V 100AH 620CCA AGM Deep Cycle Marine & RV Battery

 Longer Run Time

  • From Our Experts:

    A high powered, reliable and durable AGM battery for your boat or RV

  • Brand:
    Duracell Ultra
  • Format:
    BCI Group 27M
  • Cold Cranking Amps:
    620
  • Terminal Type:
    DT, SAE/M8 Stud, SAE/M8 Threaded Post, WNT
269 dollars 99 cents
Refundable Core Deposit: 22 dollars

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Purchase Options for SLI27MAGMDC
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 Value for the Money

Duracell Ultra BCI Group 24M 12V 800CCA Flooded Starting Marine & RV Battery

 Value for the Money

  • From Our Experts:

    A reliable starting battery from a brand you can trust

  • Brand:
    Duracell Ultra
  • Format:
    BCI Group 24M
  • Cold Cranking Amps:
    800
  • Terminal Type:
    DT, SAE/M8 Stud, SAE/M8 Threaded Post, WNT
134 dollars 99 cents
Refundable Core Deposit: 22 dollars

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Purchase Options for SLI24MHP
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 Longer Run Time

Duracell Ultra BCI Group 24M 12V 80AH 530CCA AGM Deep Cycle Marine & RV Battery

 Longer Run Time

  • From Our Experts:

    A high powered, reliable and durable AGM battery for your boat or RV

  • Brand:
    Duracell Ultra
  • Format:
    BCI Group 24M
  • Cold Cranking Amps:
    530
  • Terminal Type:
    DT, SAE/M8 Stud, SAE/M8 Threaded Post, WNT
209 dollars 99 cents
Refundable Core Deposit: 22 dollars

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Purchase Options for SLI24MAGMDC
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 Value for the Money

Duracell Ultra BCI Group 27M 12V 650CCA Flooded Dual Purpose Marine & RV Battery

 Value for the Money

  • From Our Experts:

    A powerful battery you can use for both starting and deep cycle applications

  • Brand:
    Duracell Ultra
  • Format:
    BCI Group 27M
  • Cold Cranking Amps:
    650
  • Terminal Type:
    DT, SAE/M8 Stud, SAE/M8 Threaded Post, WNT
134 dollars 99 cents
Refundable Core Deposit: 22 dollars

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Purchase Options for SLI27MDP
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 High Performance

X2Power BCI Group 31M 12V 100AH 1150CCA AGM Deep Cycle Marine & RV Battery

 High Performance

  • From Our Experts:

    Relentless power for starting and deep cycling, reliability, and durability for your boat or RV.

  • Brand:
    X2Power
  • Format:
    BCI Group 31M
  • Cold Cranking Amps:
    1150
  • Terminal Type:
    SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.)
529 dollars 99 cents
Refundable Core Deposit: 27 dollars

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Purchase Options for SLI31AGMDPM
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 Value for the Money

Duracell Ultra BCI Group 31M 12V 700CCA Flooded Dual Purpose Marine & RV Battery

 Value for the Money

  • From Our Experts:

    A powerful battery you can use for both starting and deep cycle applications

  • Brand:
    Duracell Ultra
  • Format:
    BCI Group 31M
  • Cold Cranking Amps:
    700
  • Capacity:
    100AH
154 dollars 99 cents
Refundable Core Deposit: 27 dollars

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Purchase Options for SLI31MDP
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 High Performance

X2Power BCI Group 27M 12V 90AH 930CCA AGM Deep Cycle Marine & RV Battery

 High Performance

  • From Our Experts:

    Relentless power for starting and deep cycling, reliability, and durability for your boat or RV.

  • Brand:
    X2Power
  • Format:
    BCI Group 27M
  • Cold Cranking Amps:
    930
  • Terminal Type:
    SAE and 3/8-16” Stud (Pos.), 5/16-18” Stud (Neg.)
479 dollars 99 cents
Refundable Core Deposit: 22 dollars

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Purchase Options for SLI27AGMDPM
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Choosing the Right Marine Battery for Your Needs

Not all marine batteries are created equal. Before you buy, consider how you'll use your boat. Deep cycle batteries are ideal for powering electronics, trolling motors, and onboard accessories over long periods. Starting batteries, on the other hand, are built to deliver a strong burst of energy to get your engine running. If you need both, a dual-purpose battery provides a convenient all-in-one solution to handle both tasks.

Need help choosing the right battery? Visit your local Batteries Plus store for expert guidance or use our online battery finder to search by your vessel's make and model.

Why Buy Marine Batteries at Batteries Plus?

  • Wide selection of AGM and lead-acid marine batteries
  • Trusted brands like X2Power, Duracell, and Odyssey
  • In-store pickup or ship-to-home options
  • Business accounts for commercial fleets and boat repair services

Explore our full selection today to get reliable marine power that lasts all season long.



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How to Maintain Your Boat or RV Battery Over the Winter

Keeping your tools, toys and vehicles charged during their months in storage is a top priority if you want them to work well again when it's time to use them. Find out what you need to know to keep your batteries in good shape during the off-season.

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