Powering Your Aquatic Adventures

Cruisers, racers and anglers want to spend as much time on the water as possible. Long-lasting RELiON lithium iron phosphate (LiFePO4) batteries fit all types of watercraft and deliver the dependable power for everything you need, from punching your holeshot in competition to running your A/C at the dock.

Lithium Benefits for Marine

RELiON lithium batteries are built to last and designed to perform. Lightweight, durable and maintenance-free, our batteries charge quickly, store safely, and withstand the harshest temperatures and conditions.

Drop-in Replacement

RELiON lithium batteries are available in a variety of BCI standard sizes for easy drop-in replacement.


RELiON lithium batteries provide more power than traditional lead-acid batteries and are typically half the weight. This makes for better acceleration and more agility on the water.

Constant Power

RELiON lithium batteries provide long-lasting energy for all your marine needs, so run the A/C, the fish finder or the trolling motor and know that you have ample reserves.

Zero Maintenance

RELiON lithium batteries are maintenance free – no watering; no corrosion. In addition, they can be charged more quickly using standard plug-in, alternator, generator, or solar systems. Partial charging does not affect performance, and a low self-discharge rate means worry-free storage.

Temperature Tolerant

RELiON lithium batteries are designed to perform in harsh conditions–freezing cold, scorching heat or rough waters.


RELiON lithium batteries are the ultimate clean energy. No gassing, no fumes and no pollution. Enjoy reliable power, while protecting the environment, using these non-hazardous batteries.

Increased Usable Capacity

Lithium batteries have more hours of power. With 25-50% higher capacity than lead acid batteries with full power throughout discharge lithium batteries eliminate the voltage sag that is all too common with lead acid and will keep you on the water.

High Performance

Built to last, designed to perform, premium RELiON lithium batteries deliver unsurpassed performance on the water. We back this claim with a comprehensive, 10-year warranty.

Lead is Dead

Check out the chart below to compare the performance advantages of advanced lithium technology versus traditional lead-acid batteries.

Lithium vs. Lead-Acid Comparison

Lead Is Dead Chart

RELiON Batteries Available at West Marine

We have one of the largest LiFePO4 product offerings available with 12V and 24V batteries available in a variety of BCI standard sizes for easy drop-in replacement.

Marine Lithium Batteries

Learn More About Each RELiON Battery Available



This 12V 12Ah lithium battery is small but mighty. This powerful lithium battery packs a punch, giving you the perfect amount of power for full-day fishing and outdoor recreation adventures.

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The RB60 is a 12V, 60Ah battery that is optimal for smaller trolling motors or boats where weight is at a premium. It's super lightweight, yet has the power needed for a full day on the water.

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At 25 lbs, this 12V, 80Ah battery is less than half the weight of a lead-acid equivalent and is ideal for deep cycle applications where you need lots of power for a longer period of time. Eighty Amp-hours of capacity means a full day of power for mid-sized trolling motors and other marine applications.

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RB100 is our most popular battery. It's a Group 31 12V, 100Ah deep cycle battery able to power your marine adventures, and then some. The RB100 surpasses expectations by being versatile, compact, and more powerful than its lead-acid counterparts and has the capacity for nearly every marine application.

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RB100-HP Starting Battery

This 12V, 100Ah dual-purpose battery can handle both starting and cycling. RELiON’s HP Series batteries are a perfect compromise between the unique demands of starting service and deep cycling, low amp draw service. The RB100-HP is a powerhouse that is also versatile and compact enough for use in many marine applications including bass boats, cruisers, charter and shallow bottom boats.

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This Group 8D lithium iron phosphate (LiFePO4) battery is ready to replace your heavy lead-acid battery bank in your sailboat. It’s only 61 lbs for a true 200 Amp Hour lithium replacement battery that provides 100% of its rated capacity. The RB200 gives you the flexibility to replace several small, heavier lead-acid batteries in a single high capacity unit.

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Our RB300 is a 12V, 300Ah lithium deep cycle battery. At only 82 lbs for a true 300 Amp Hour lithium battery that provides 100% of its rated capacity the RB300 gives you the flexibility to replace several small, heavier lead-acid batteries in a single high capacity unit. This unit is perfect for large sailboats and other vessels that have high power demands.

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The Rb24V52 is a 24V, 52Ah group size 31 battery. It's an ideal replacement for an AGM, Gel or SLA battery in 24V systems. It provides the power you need for a full day of fishing with 24V trolling motors or connected in series or parallel for solar energy storage, boat or off-grid applications.

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This group size 8D powerhouse battery is perfect for 24V marine applications with high power demands. It's a 24V, 100Ah deep cycle battery and weighs only 61 pounds.

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Need Help Selecting the Right Battery for Your Boat?

When selecting new batteries, the first step is to size your battery bank according to your needs. Generally, to get the same runtime as a wet or AGM lead-acid battery, use a lithium battery that is 60% of the capacity of the lead-acid battery you are replacing.

Marine Battery Group Size Guide

Why RELiON Lithium?

Bassmaster Elite Series Pro Patrick Walters explains why he runs RELiON Lithium batteries in his tournament boat.

Sailing Nandji | Upgrading to Lithium

Sailing Nandji made the change from AGM lead acid batteries to RELiON Lithium batteries. In this video they explain why they made the change and provide you with information comparing the two types of batteries.

Need Help?

Visit our help center to get all your questions about lithium batteries answered.

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