Built For The Long Haul
Boat batteries aren’t one-size-fits-all, and neither are your boating needs. Whether you’re outfitting trolling motors or installing a lithium battery to operate your cabin electronics, you need something that can withstand marine conditions with power and efficiency.
Whereas traditional lead acid boat batteries can be heavy and clunky, our lithium marine batteries are 50% lighter, three times more energy dense, and have ten times the life cycle. In addition, 3x faster recovery means you can charge faster, save time, and move further. On the water, that can be the difference between a good day and a bad one. There’s no doubt that these batteries are built for the long haul.
We use only the highest-grade lithium iron phosphate encased in steel and meeting the UL1624 standard (UL file no. MH64383). This material and engineering make for unparalleled reliability, stability, and safety.
We took the standard battery case up a notch with built-in rubber feet, radiused corners, 96.7% larger terminal connection pads, interior molded ribs for structural security, and the highest-grade ABS plastics with additives for fire retardancy. Our innovative case design changes the scope of the industry.
To keep our batteries as powerful and efficient as possible, we’ve welded our cells via thick copper/tin machined collector plates, welded all interior pack points, added a press broke flange at each end to create a mechanical backbone for the BMS, used high-grade wiring and ring terminals throughout, and treated connections with industrial epoxy for long-lasting protection.
Battery Management System (BMS)
Our “smart” BMS design has abundant features to provide you with the safety and performance you desire, such as: low-temp discharge, auto-shutoff, short circuit protection, low and high-voltage shutoffs, and overcurrent disconnect. Our structurally sound BMS board features a bolted design, eliminating all unnecessary solder, resulting in one cohesive pack for years of trouble-free performance.
Expion360 lithium batteries are expertly engineered inside and out.
Industry-Leading Warranty and Support
Lithium batteries are an investment into your marine pursuits and give you more time on the water. That’s why we implemented an industry-leading 12-year warranty to show our customers that we’re here for the long run. This guarantee, coupled with our U.S.-based customer support team (trained in lithium technology), means you can trust in a product that’s built not only to last but to outlast.
Explore our expertly engineered collection of premium lithium batteries, mounting kits, power systems, and accessories backed by unmatched support and quality.
"Expion360 lithium batteries afford me the peace of mind to fish all day without ever having to worry about power loss with my trolling motor or electronics! Check them out if you're looking for safe, reliable power!"
"As a guide and tournament angular I test and challenge my equipment daily, the number one most important part without a doubt are our batteries. Nothing works if they don’t hold up to the demands put on them. Electronics, trolling motor, running lights, and live wells all depend on these batteries. That’s why I choose the Expion360 lithium from wholesale batteries for my boat."