Marine Lithium Battery Power Reinvented
The Ultimate Marine Battery
Still relying on lead-acid/AGM batteries? That ship has sailed.
Lithionics delivers the industry’s most advanced marine lithium battery system. Built for offshore durability, rapid charging, and ultra-reliable performance, Lithionics marine batteries are trusted by premium boat builders and serious adventurers alike.

Why Upgrade to a Lithium Battery Boat Setup?
Our advanced lithium batteries deliver up to 5x longer lifespan than traditional lead-acid systems. They charge faster, weigh less, and require zero maintenance—so you spend more time on the water and less time tied up at the dock.
Whether you’re powering A/C, electronics, trolling motors, or stabilization systems, Lithionics® marine lithium batteries keep you off the dock and out on the water longer.


Built for the Sea. Built for Safety.
Safety is built into every Lithionics® battery, with rigorous certifications and real-world durability:
- UL 1973 Certified – For energy storage safety
- ABYC E-13 Compliant – Marine battery safety standard
- IP66 Rated – Water-resistant and sealed for marine environments
- Crush + Impact Resistant – Tested at 22,000 lbs and 150G
Unlike plastic-cased batteries, Lithionics uses aircraft-grade aluminum enclosures that resist fire, cracking, and thermal runaway. Every system includes our patented NeverDie® BMS—adding thermal protection, short circuit protection, and live diagnostics.
Marine Power Solutions






Adventure-Tested,
Customer-Approved
“I look forward to continued success in my relationship with Lithionics, as I have mentioned many times in my videos; I wouldn’t ever consider any other battery!”
George Mauro
Humble Road, LLC
“You know I must tell you that it is always such a pleasure working with you. I totally appreciate that you treat all my projects with respect and promptness – even though Pinnacle is most likely one of the smaller fish Lithionics deals with. It is absolutely wonderful to have such a reliable and professional person to deal with whom is also excellent at communicating!” “Phil is actually both my Hero and a real Superstar! … I think that I can also say that I can extend the same sentiments to just about everyone that I’ve ever dealt with at Lithionics – right from Reception to Shipping employees! I also believe its equally (if not more) important to let people know when they are doing a great job. Too many people are only too quick just to criticize….”
David Flather
Pinnacle Innovations
We really like the Lithionics Battery Management system (BMS) as it offers some protection from over charging, under charging and provides two isolated channels to the batteries. They also have a dedicated FCC circuit that connects from the BMS to our Alternator controllers which can shut them down in case of overcharging without damaging the diodes.
Sailing Sandstar Crew
Sailing Sandstar: Our Refit