12V Marine Lithium Batteries the Boats of the Future

3,813 Published by BSLBATT Mar 17,2020

Whether you’re a commercial fisherman, captain, compete in fishing tournaments regularly, or simply just enjoy going out to the sandbar on the weekends, you probably realize that the number one problem when boating is having a reliable battery.

Our marine lithium-ion batteries provide both starting power and can allow you to safely use 100% DOD (depth of discharge) for your house bank. With less than 1% a month self-discharge, vessels with our batteries can stay fully charged for over a year with no use.

BSLBATT Lithium Battery technology can last up to 5000 cycles. Typically a deep cycle lead battery will only last around 300 – 500 cycles. Meaning you may have to replace your lead batteries over 15 times to equal the life of just 1 BSLBATT Battery. BSLBATT Lithium Ion Batteries will save you thousands of dollars over the life of your application making this a BSLBATT Investment. Think about all of the money and frustration you have spent on lead batteries. Lithium is a green alternative that is quickly becoming the technology of choice for thousands of people and businesses around the world.

Key points regarding lithium Ion batteries for boats, yachts and other marine applications:

● Tested and Approved

● Designed to replace outdated Lead Acid, Gel, and AGM batteries.

● Drop-In Replacement – Same group sizes as standard lead-acid batteries

● Built-in Battery Protection System

● Connect multiple batteries in parallel or in series

● 70% lighter than lead-acid, zero maintenance

● Dry Battery – No Toxic Lead, Gases or Acid

● Safe – ROHS compliant No Lead or Acid

12V Marine Lithium-Ion Batteries


Marine Lithium-Ion Batteries | Deep Cycle & Starting

BSLBATT® Marine Lithium-Ion Batteries are the industry’s predominant choice for dual purpose – starting and deep cycle Marine Lithium-Ion Batteries. Our batteries require Zero Maintenance are Plug & Play and come with a Limited Lifetime Warranty. With a life of 3000 – 5000 cycles, BSLBATT Marine Lithium Batteries can last 15 times longer than Lead Acid, Gel or AGM Batteries and are designed for use in all Marine Applications from Commercial Vessels, Yachts and Cruise Ships to Fishing Boats, Electric Propulsion and Trolling Motor marine applications.

Lithium Trolling Motor Batteries

BSLBATT Battery works with all 12V, 24V, and 36V trolling Motors and offers the greatest flexibility as a dual purpose battery for deep cycle and starting. Our lithium batteries hold above 13 volts for your trolling motor giving it the power it needs to keep running at its highest thrust throughout the entire day. In contrast lead batteries, their initial voltage starts at 12.8V and quickly goes down to 11V in strong current or winds. This causes your motor to run slower when you need power the most. BSLBATT Battery uses LiFePO4 Lithium Iron Phosphate chemistry, a strong electrolyte capable of storing an extraordinary amount of power for up to 10 years. That provides nearly 100% usable capacity powering your trolling motor for the next 3000 fishing trips.


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. Marine Lithium-Ion Batteries hold a steady voltage above 13V giving your starter all the power it needs to start your engine noticeably faster and stronger.

The battery is the heart of the boat

Modern boats are more and more equipped with electronic devices that require constant power. A power cut on board can be a critical event during navigation.

First of all, if you replace a lead-acid battery by a service lithium-ion battery for marine applications, you need 50% less capacity in Ah to gey the same autonomy. Or you can take the same capacity and you will get twice more capacity.

Connecting multiple batteries in series or in parallel

BSLBATT® lithium-ion batteries can be combined in series to increase voltage or in parallel to increase capacity. The built-in battery protection system independently maintains the cells and keeps the battery operating at its maximum capacity for thousands of.

Standard BCI Group Sizes

BSLBATT 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 is ” Plug and Play ” requiring no maintenance for life. Install once and you are done!


BSLBATT® 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

Solar Charging

BSLBATT 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.

Being out at sea doesn’t mean compromising on comfort. Modern marine boats are packed with appliances that all need power. BSLBATT Marine Lithium-Ion Batteries seamlessly integrate with solar panels to store energy for when you need it, greatly reducing generator run time and improving overall boat power.

If you have any doubts about your boat battery capacity, size, compatibility or more, please contact us or call on +86 0752 2819469. BSLBATT will not take responsibility for our marine batteries being ordered and turning out incompatible.

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