Power 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.
See Our Selection Of Lithium Marine BatteriesRELiON lithium batteries are available in a variety of BCI standard sizes for easy drop-in replacement. Looking for a custom solution? No problem! Our engineering team can design the best system for your needs.
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.
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.
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.
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.
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.
Spend less time waiting and more time on the water—RELiON lithium batteries charge up to 5X faster than traditional lead-acid batteries, getting you back to your adventures quickly.
RB100 12V 100Ah Lithium Marine Battery
$899.95
Power your boat with confidence using the RELiON RB100, a 100Ah lithium marine battery built for lasting performance. Lightweight and maintenance-free, it charges fast, outlasts lead-acid batteries, and withstands harsh marine conditions—keeping you on the water longer.
Find Out More
RB100-HP High Performance Dual Purpose Lithium Battery
$999.95
The RELiON RB100-HP is a powerful 12V 100Ah lithium marine battery designed for high-demand applications. With a 100A continuous discharge and up to 800A peak, it delivers instant power to start your boat's motor and run essential electronics. Weighing just 29.8 lbs, it charges faster, lasts longer, and withstands harsh marine conditions—all with maintenance-free reliability.
Find Out More
RB36V40 36V 40Ah LiFePO4 Battery
$1,089.95
The RELiON RB36V40 is a lithium battery designed for marine electronics and trolling motors. Delivering consistent power with a lightweight, maintenance-free design, it ensures longer run times, faster charging, and a longer lifespan than traditional lead-acid batteries. Built to handle tough marine conditions, the RB36V40 provides reliable, efficient energy to keep your equipment running smoothly on the water.
Find Out MoreParing Mercury Marine® Outboard Engines with RELiON® Lithium Batteries
Upgrade Your Sailing Adventures with Lithium Batteries
Lithium Batteries For Fishing Boats
RELiON deep cycle lithium marine batteries deliver reliable, long-lasting power for fishing boats, ensuring uninterrupted use of trolling motors and electronics. With faster charging, lighter weight, and superior durability, they withstand harsh marine conditions—so you can focus on the catch.
Learn More
Lithium Batteries for Sailboats
With advanced onboard tech, reliable power is key for sailing. RELiON deep cycle lithium marine batteries provide durability, corrosion resistance, and longer run times to withstand harsh marine conditions, keeping your navigation and sailing systems powered.
Find Out More