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.


CMPower LiFePO4 Batteries by Custom Marine Products
Model - Part Number Voltage Capacity
Amp Hours
Watt
Hours
BMS Continuous
Draw Amps
Group Size Size
Inches
Weight
lbs.
Size
mm
Weight
Kg
Price Dealer
Price
Marine High Power Density Series - Sealed
12 Volt
CMP205120-BH150 12.8 120 1,536 150A 24 10.25x6.7x8.2 29.0 260x170x208 13.0 $789
CMP205135-BH150 12.8 135 1,728 150A 27 12x6.7x8.3 31.0 305x169x210 14.0 $989
CMP205150-BH150 12.8 150 1,920 150A 31 13x6.8x8.9 34.2 330x173x216 15.5 $1,089
CMP205350-BH200 12.8 350 4,480 200A 8D 20.75x11.2x10 76.1 521x267x220 34.5 $2,189
Marine High Power Density Series - Replaceable BMS
CMP205150-BHR150 12.8 150 1,920 150A 31 13x6.8x8.9 34.2 330x173x216 15.5 $1,189
CMP205240-BHR200 12.8 240 3,072 200A 4D 20.5x7.3x9.5 59.5 520x186x240 27.0 $1,789
CMP205315-BHR200 12.8 315 4,032 200A 8D 20.75x11.2x10 58.4 527x283x250 26.5 $1,989
Marine High Power Density Series - with Preheater
CMP205350-BHH200 12.8 350 4,480 200A 8D 20.6x10.6x8.6 75.0 523x269x218 34.0 $2,389
24 Volt
CMP206150-BHR150 25.6 150 3,840 150A 8D 20.75x11.2x10 80.0 527x283x250 36.0 $2,089
48 Volt
CMP208060-BHR100 51.2 60 3,072 100A 4D 19x6.7x9.5 54.0 483x170x240 24.5 $1,689
CMP208105-BHR-100 51.2 105 5,376 100A 8D 20.5x10.5x8.7 88.2 521x267x220 40.0 $2,289
Marine Semi-Solid State High Power Density Series - with Replaceable BMS, Heat & NMEA 2000
12 Volt
CMP205450-BHRH300 12.8 450 5,760 300A 8D 20.47x10.6x8.7 94.8 520×269×220 43.0 $2,189
48 Volt
CMP208150-BHRH200 51.2 150 7,680 200A 8D+ 20.6x14.3x9.1 114.6 522x365x232 52.0 $3,399
Marine Semi-Solid State High Power Density Series
96 Volt
CMP209053-BHR150 102.4 53 5,427.2 150A 22.4(24.0)×15.4×8.3 99.2 570(610)×390×210 45.0 $3,599
Mobility Batteries
CMP205020-BH30 12.8 20 256 30 5.94x3.88x3.75 4.4 151x99x95 2.0 $250 $175
CMP205023-BH30 12.8 23 294 30 7.15x2.99x6.57 6.0 181x76x166.9 2.7 $299 $210
CMP205046-BH50 12.8 46 589 50 U1 7.71x5.16x7.13 12.0 195.8x131x181 5.4 $449 $315
CMP205064-BH50 12.8 64 819 50 22 9.01x5.44x8.20 21.4 229x138x208 9.7 $499 $350

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.

View All Marine Lithium Batteries
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

21 products
CMPower 450Ah LiFePO4 Battery

CMPower 450Ah 12V Semi-Solid State LiFePO4 Battery

The CMPower 450Ah semi-solid state LiFePO4 is in the USA and arrives at our warehouse in a few days. Field-replaceable BMS, Bluetooth, Victron, heating, NMEA 2000, 300A continuous.

In the USA · Order now

Popular Collections

Shade Tolerant Flexible Solar Panels Explained

CMP Walkable Solar Panels on Catamaran