Upgrade your boat with premium LiFePO4 batteries engineered for reliable, long-lasting power on the water. Designed for sailboats, fishing boats, cruisers, catamarans, and marine solar systems, CMP batteries deliver lightweight performance, fast charging, advanced battery management, and exceptional durability. Whether you're powering a house battery bank, trolling motor, or complete onboard electrical system, you'll find dependable lithium solutions backed by expert marine power support.


marine lithium battery CMPower 48V 60Ah for ePropulsion motor

Marine Lithium Batteries Built for Serious Boaters

CMP Marine Lithium Batteries are engineered specifically for boaters who need reliable, high-performance power on the water. Designed for sailboats, fishing boats, cruisers, catamarans, and marine solar systems, our LiFePO4 batteries deliver exceptional performance for house battery banks, engine starting, trolling motors, air conditioning, bow thrusters, electric winches, and other demanding onboard applications.

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marine lithium battery replaceable BMS

The Advantage of a Replaceable BMS

Built with advanced battery management systems (BMS), our batteries provide outstanding safety with an extremely low fire risk compared to many other lithium chemistries. For added peace of mind on extended offshore voyages, many models feature a replaceable BMS, allowing the battery management system to be easily swapped if needed—a unique advantage for long-distance cruisers.

Marine Lithium Battery smartphone app CMPower

Stay Connected with Real-Time Battery Monitoring

Monitor your battery's performance anytime with the CMPower 2.0 Smartphone App. View real-time battery status, state of charge, voltage, remaining amp-hours, charging status, temperature, charge cycles, cell voltages, fault alerts, and estimated time to full charge—all from your smartphone. Stay informed and manage your onboard power system with confidence, whether you're at the dock or offshore.


More Power. Less Weight. Longer Life.

Upgrade from AGM and lead-acid batteries to lightweight LiFePO4 technology that delivers over 3,000 charge cycles, faster charging, and nearly full usable capacity. Higher charging efficiency helps maximize the energy captured from your marine solar system, while our custom battery solutions provide the flexibility to meet specialized onboard power requirements.


Marine LiFePO₄ Battery Benefits

Lightweight
Up to 70% lighter than lead-acid batteries for easier handling and installation.
Drop-In Replacement
Designed to replace most lead-acid batteries with minimal system modifications.
Fast Charging
Recharge much faster than traditional batteries to maximize your time on the water.
100% Usable Capacity
Use nearly the full battery capacity without reducing battery life.
Bluetooth Monitoring
Monitor battery status, voltage, temperature, and charge directly from your smartphone.
Replaceable BMS
Serviceable Battery Management System simplifies maintenance and extends battery life.
Marine Ready
Built to withstand vibration, moisture, and demanding marine environments.
Long Cycle Life
Delivers thousands of charge cycles for years of reliable performance.

Marine Lithium Batteries

19 products
CMPower 450Ah LiFePO4 Battery

CMPower 450Ah LiFePO4 Battery – Coming Soon

Discover the upcoming CMPower 450Ah LiFePO4 battery featuring semi-solid state cell technology, field-replaceable Daly BMS, Bluetooth monitoring, Victron compatibility, built-in heating, and 300A continuous performance — engineered for demanding marine and off-grid power systems.

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