Lithium ion marine batteries

A drop in Replacement and Upgrade from Lead Acid, AGM or Gel Batteries.

Smart Battery® Marine Lithium Batteries are the industry's predominant choice for Dual Purpose - Starting and Deep Cycle Lithium Marine Batteries.

Our 12V Lithium Marine Batteries come with a Limited Lifetime Warranty and are reliable in all Marine Battery Applications from Luxury Yachts to Fishing Boats. Over 15,000 Smart Battery® Lithium Batteries have been widely used for the past several years in commercial, military and consumer applications around the world. Our Lithium Batteries have less than a !% failure rate making Smart Battery® the predominant choice for business's and individuals looking for dependable Lithium Batteries.

Marine Lithium Batteries

Plug & Play

Simply Connect your battery cables and you're ready to go. Every Smart Battery has a built in battery protection system keeping it running at peak performance for thousands of cycles.

Modular

Smart Battery Lithium Ion Batteries can be connected in series and in parallel. Our internal battery protection system requires zero maintenance for the life of the battery. 

Built in Battery Protection

Every Smart Battery® comes with a built in Battery Protection System (BPS) that optimizes the cells and provides maximum safety and dependability at sea. 

70% Lighter than Lead

Yachts with large battery banks can typically reduce 70% of there weight and use around 1/3 of the space required for the same amount of power as their lead bank.

100% Depth of Discharge (DOD)

Safely use 100% DOD (depth of discharge) meaning you can expect to nearly double your capacity when comparing to the same size lead acid, gel or agm battery.

Long Life 3000 - 5000 Cycles

Our Lithium Batteries will provide you with 100% depth of discharge for over 2000 cycles, after 2000 cycles the battery will still have 80% of its rated capacity.


SAME DAY SHIPPING ON IN STOCK ITEMS ORDERED BEFORE 3:00pm EST. 

|  MARINE LITHIUM BATTERIES  |  DEEP CYCLE & STARTING



12V 35AH Lithium Ion Marine Battery

12V 35AH LITHIUM MARINE BATTERY

10 lbs.

IN STOCK

$449.99

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12V 40AH Lithium Ion Marine Battery

12V 40AH LITHIUM MARINE BATTERY

13 lbs.

IN STOCK

$579.99

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12V 50AH Lithium Ion Marine Battery

12V 50AH LITHIUM MARINE BATTERY

15 lbs.

IN STOCK

$689.99

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12V 75AH Lithium Ion Marine Battery

12V 75AH LITHIUM MARINE BATTERY - Group 24

25 lbs.

IN STOCK

$999.99

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12V 80AH Lithium Ion Marine Battery

12V 80AH LITHIUM MARINE BATTERY - Group 27

28 lbs.

IN STOCK

$1,049.99

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12V 100AH Lithium Ion Marine Battery

12V 100AH LITHIUM MARINE BATTERY - Group 31

30 lbs.

IN STOCK

MOST POPULAR

$1,299.99

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12V 150AH Lithium Ion Battery

12V 150AH LITHIUM MARINE BATTERY - Group 4D

49 lbs.

IN STOCK

$1,899.99

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12V 260AH Lithium Ion Battery

12V 260AH LITHIUM MARINE BATTERY - Group 8D

80 lbs.

IN STOCK

$2,999.99

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View our full line of 12V Lithium Batteries.
Smart Battery offers a wide range of 12V Lithium batteries that can be combined in series and in parallel. 

Click here


| MARINE LITHIUM BATTERY CHARGERS

We offer chargers from the industries leading charger manufacturer's. Smart Battery® Lithium Ion Battery Chargers are programmed specifically for our batteries. 

12V 15A Lithium Ion Battery Charger

12V 15A LITHIUM ION BATTERY CHARGER

$235.99

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12V 2 Bank 15A Lithium Ion Battery Charger

12V 2 BANK LITHIUM ION BATTERY CHARGER

$364.99

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12V 3 Bank Lithium Ion Battery Charger

12V 3 BANK LITHIUM ION BATTERY CHARGER

$489.99

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12V 4 Bank Lithium Ion Battery Charger

12V 4 BANK LITHIUM ION BATTERY CHARGER

$609.99

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Video Resources

  • HOW IT'S MADE

    If you are searching the world wide market for Lithium Batteries chances are you found us because we are the world's Predominant Manufacturer of Drop In Replacement Lithium Batteries.  Smart Battery's cutting edge advancements in Lithium Battery technology take all of the complexity out of upgrading to our simple plug and play Lithium Batteries. 

  • STATE OF THE ART FACTORY

    With 3 World Class State of The Art Factories that employ nearly 3000 workers, our expertise is second to none. In January 2016 we proudly opened the doors to our 3rd factory that is one of the latest and most advanced fully automated cell production plants in the world. with over 250 highly commended engineers and research staff you can rely on Smart Battery as your permanent source for dependable Lithium Batteries. 

  • WHO WE ARE


    More than 15,000 Smart Batteries have been used around the world for Aerospace, Military, Commercial and Consumer applications. Dozens of Engineers from Fortune 500 companies have evaluated and approved our products making Smart Battery® their Premier Supplier for Lithium Batteries. We provide OEM Lithium Battery Solutions to hundreds of companies like General Motors Global Supply Chain who relies on Smart Battery® for our OEM Lithium Battery's used in there EV's. 

    Read more




Lithium Trolling Motor Batteries


Smart Battery's work with all 12V, 24V, and 36V trolling Motors and offer the greatest flexibility as a dual purpose battery for deep cycle and starting. Our lithium batteries hold above 13 volts for most of the time your trolling giving your motor the power it needs to keep the running at its highest thrust throughout the entire day. In contrast lead batteries start there voltage at 12.8V and quickly go down to 11V in in strong current or winds causing your motor to run slower when you need the power the most.  Smart Battery uses LiFePO4 Lithium Iron Phosphate chemistry, a strong electrolyte capable storing an extreme amount of power for over 10 years while providing 100% usable capacity powering your trolling motor for the next 3000 fishing trips.

delivering power for the next 3000 cycles

Smart battery provides nearly 100% of its power for your first 2000 fishing trips. 





MORE STARTING POWER

Guaranteed to start your engine faster.

MORE VOLTAGE IS MORE POWER


When you start your motor a heavy load is placed on your battery, Voltage in lead acid and agm batteries starts out low and can drop below 10V during cranking causing your motor to spin over slowly. Smart Battery Lithium Batteries hold a steady voltage above 13V giving your starter all the power it needs to start your engine noticeably faster and stronger than lead acid batteries. 





Visit us in January

Smart Battery® products are widely used for Electric & Hybrid Marine Applications around the world. Visit is at the Electric & Hybrid Marine World Expo from January 16 - 18th 2017 at the Tampa Convention Center in Florida.






Installation Information

Setting up your inverter charger

Smart Battery® Lithium Ion Batteries will work with any standard marine charger or alternator. We recommend programming your inverter/charger remote to 14.6V for Bulk and Absorb, and set the float to 13.6V. 

Connecting multiple batteries in series or in parallel

Smart Battery® Lithium Ion Batteries can be combined in series to increase voltage or in parallel to increase capacity. The Built In Battery Protection independently maintains the cells and keeps the battery operating at it's maximum capacity for thousands of cycles.

Charging 

Smart Battery® Lithium Ion Batteries can be recharged with any standard charger, alternator and charge controller designed to charge Lead Acid, Gel or AGM Batteries. In some cases if your charger does not reach a high enough voltage it may not fully charge the battery. We offer a line of 12V Lithium Battery charger designed to provide maximum performance and longest life out of our batteries. To view our Chargers Click Here

Standard BCI Group Sizes

Smart Battery Lithium Batteries are the same group sizes as Lead Acid Batteries. Simply connect your cables and you're ready to go.  The built in battery protection system will automatically disconnect if you accidentally touch the positive and negative terminal together with a wrench or if the battery is accidentally wired backward. After you install the battery and connect your cables you can immediately use the battery. Unlike other Lithium batteries that require sophisticated external wiring to battery management systems, our line of Drop In Replacement Lithium Batteries are " Plug and Play " requiring no maintenance for life. Install once and your done. 

Solar Charging

Smart Battery Lithium Batteries work with all standard Solar Charge Controllers. Our batteries are 99.1% efficient and able to absorb nearly 100% of the energy from your solar system whereas your lead batteries can lose over 25% of the power from your solar panels due to resistance. 

Tip: Keep your battery connections firmly tightened, a loose terminal will heat up and cause resistance. 






3.2V 5AH Smart Battery® LiFePO4 Cell

Every Smart Battery® is manufactured with our 3.2V Lithium Iron Phosphate (LiFePO4) Explosion Proof Stainless Steel Cells. These cells bolt together for a firm connection and more electrical conductivity compared to the tab welded method. Our cells are among the safest on the planet with multiple redundancy features. 



Thermal Fuse

Internal Cell Safety Fuse

Every cell has a built in thermal safety fuse between the anode and cathode that will internally break in the unlikely event the cell would begin to overheat. 

Safety Vent 

High pressure safety vent

A high pressure safety vent will flip open to release energy and prevent explosion if exposed to extreme heat.

Electrolyte 

Flame Retardant Electrolyte

Our cells are manufactured with a flame retardant additive in the electrolyte making them safe.

Explosion proof
 

explosion proof stainless steel

Every Smart Battery cell is manufactured in a explosion proof stainless steel cylindrical case. 




Contact Us Now

Contact Smart Battery today and speak to one of our Professional Sales Engineers who will help answer any questions you have. 

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