Marine Power Solutions
LiFePO4 battery systems for cruising sailboats, catamarans, and fishing vessels.
Dependable Marine Power for House Systems and Electronics
On the water, electrical power is for more than convenience. It supports navigation, communication, lighting, refrigeration, and safety equipment every hour you are aboard.
Whether you are anchoring overnight, passagemaking offshore, or running electronics all day while fishing, your electrical system must perform predictably.
Battle Born LiFePO4 power systems are designed for marine house power applications where reliability matters. You stay longer at anchor, operate quietly without generators, and trust your equipment when it matters most.
This isn’t about adding more power. It’s about dependable operation.
Built for Life on the Water
Battle Born marine power systems are designed for real onboard electrical operation and continuous daily cycling. For many boats, the electrical system becomes the foundation that supports how the vessel is used.
Stay Longer at Anchor
Operate refrigeration, lighting, and house loads overnight without running the engine.
Restore Capacity While Underway
Solar and properly regulated alternator charging recharge the house bank while operating.
Stable Power for Electronics
Chartplotters, radar, sonar, and communication equipment operate consistently without voltage drop.
System Visibility
View battery status, charging activity, and system performance through onboard communication and the Battle Born mobile app.
Designed for Long Service Life
Built for repeated daily use in marine environments.
Choose the Right Marine Battery Technology
Boats depend on electrical systems continuously, often far from shore power. When the house bank cannot keep up, onboard systems begin to shut down one at a time.
Common Real-World Issues:
House loads drain batteries overnight at anchor
Running the engine just to recharge
Navigation and communication electronics sensitive to voltage drop
Inverters or onboard equipment shutting
Multiple displays, sonar, and accessories running continuously
Boats today rely on electrical systems the same way they rely on fuel and water systems. Reliable electrical power is a core onboard system, not an accessory.
How a Battle Born System Powers Your Boat
Reliable onboard power requires integrated components designed to work together.
House Power Systems
Provide consistent electrical power for onboard living systems throughout the day and overnight.
Inverter Power
Operate outlets, galley appliances, and onboard AC loads without running a generator.
Alternator Charging
Recharge house bank while underway using properly regulated alternator charging.
Solar Integration
Recharge quietly while anchored or underway to extend time away from shore power.
Trolling Motor Power
Extended runtime and consistent thrust for center console, bass, and shallow water applications.
Electronics & Portables
Reliable power for fish finders, sonar systems, forward-facing electronics, kayak fishing, and portable uses including ice fishing.
System Monitoring & Communication
Marine electrical systems often operate away from shore power and service support. Knowing system status matters. Smart Battle Born Batteries and accessories support integrated communication and monitoring through Dragonfly IntelLigence® technology and the Battle Born mobile app. Users can view battery status, system performance, and operating conditions directly from a mobile device.
This Allows Boat Owners To:
Check state of charge without opening compartment
Monitor charge and discharge activity
Confirm proper charging while underway
Identify abnormal conditions early
Manage onboard energy usage with confidence
On the water, awareness of your electrical system is as important as capacity. Monitoring helps operators understand how their system is performing wherever the boat is operating.
Trusted by Boat Builders & Experienced Mariners
Battle Born power systems are used by professional builders, long-distance cruisers, and anglers who rely on their electrical systems daily. On the water, equipment is chosen for dependable performance. Owners and captains who spend extended time aboard choose systems they trust each time they leave the dock.
OEM Integration
Cruisers & Educators
Professional Anglers
Designed for Marine Safety & Reliability
Marine installations place batteries inside enclosed compartments exposed to motion, vibration, temperature changes, and humidity. Predictable electrical behavior is critical.
Battle Born LiFePO4 batteries include an internal Battery Management System (BMS) that continuously monitors voltage, current, and temperature. If operating limits are exceeded, the battery automatically disconnects to protect both the battery and onboard equipment.
Battle Born systems incorporate layered protective design elements and are intended to support installations that follow recognized marine electrical practices, including ABYC (American Boat and Yacht Council) guidelines commonly used by professional installers and marine surveyors.
Proper charging is also part of system safety. Marine alternators are capable of delivering sustained current, and lithium batteries can accept that charge quickly. Battle Born alternator regulation is designed specifically to safely manage high-output marine alternators when charging lithium house banks.
When offshore or away from marinas, systems must operate consistently and predictably.
American Engineered, Assembled & Supported
Battle Born batteries, alternator regulators, and other power system components are designed, assembled, and supported in the United States at Dragonfly Energy’s headquarters in Reno, Nevada. Our technical support team works directly with installers, integrators, and boat owners. When questions arise, you speak with knowledgeable staff familiar with marine electrical systems.
We stand behind the systems we build with real technical support and long-term product support.
Marine Applications We Support
Battle Born lithium systems are commonly installed as upgrades to lead-acid and AGM marine house battery systems.
Cruising Sailboats
Offshore Catamarans
Coastal Cruising Powerboats
Center Console Fishing Boats
Bass Boats & Trolling Motor Systems
Kayak & Portable Fishing Setups
Learn About Marine Lithium Power
Frequently Asked Questions
Can lithium batteries be safely used on boats?
Yes. LiFePO4 chemistry is selected for its stability, and Battle Born batteries incorporate multiple layers of protection, including internal monitoring and automatic electrical isolation if unsafe conditions are detected. When installed according to recognized marine practices, including ABYC guidelines, lithium systems are widely used in cruising and offshore applications.
Can I retrofit my existing boat?
Yes. Most marine installations are upgrades from lead-acid or AGM house banks. The primary consideration is ensuring the charging system is properly regulated for lithium batteries. This typically involves alternator regulation and appropriate charger settings, and our team or installer network can help configure the system for your vessel.
Will my electronics operate more reliably?
Yes. Lithium batteries maintain stable voltage throughout their discharge cycle. This helps prevent voltage sag that can cause chartplotters, radar, sonar, and communication systems to reboot or behave unpredictably under load.
Will lithium batteries damage my alternator?
Not when properly regulated. Lithium batteries can accept higher charging current than traditional batteries, which is why proper alternator regulation is important. A regulated charging setup controls output and protects both the alternator and the battery system while underway. Battle Born systems are designed to work with regulated alternator charging for marine installations.
How do I know how much battery capacity I need?
Battery sizing depends on your daily electrical usage, including refrigeration, electronics, lighting, and inverter loads. The goal is to support normal onboard operation without relying on routine engine or generator charging.
You can estimate your required capacity using our Battery Calculator, or our team can help review your typical usage and recommend an appropriate system for your vessel.
Will my insurance or surveyor accept lithium batteries?
When installed according to ABYC guidelines with certified components, lithium battery systems are commonly accepted by marine insurance providers. Because requirements vary, owners should confirm acceptance with their specific insurance carrier for their vessel.