Marine Battery & Power Management
Power your adventures with confidence and reliability.
Unleash the Full Potential of Your Marine Electrical System
At Captain's Marine Electrical, we understand that a reliable and efficient onboard power system is crucial for a safe and enjoyable boating experience. Whether you're a weekend cruiser, a serious angler, or a long-distance voyager, you need a power solution you can depend on. We specialize in designing, optimizing, and installing complete onboard power management systems, ensuring that your vessel has the power it needs, when it needs it.
Expertise You Can Trust: ABYC Compliance & Beyond
We are committed to upholding the highest standards of safety and quality. Our technicians are highly trained and experienced in all aspects of marine electrical systems, and all our work is performed in strict accordance with American Boat & Yacht Council (ABYC) standards. This commitment ensures that your electrical system is not only powerful and efficient but also safe and compliant with industry regulations.
Our Core Competencies
- System Design
- Installation
- Optimization
- Maintenance
- Remote Monitoring
Battery System Services
System Analysis
- Battery capacity testing
- Load analysis and runtime calculations
- Charging system evaluation
- Usage pattern assessment
Battery Installation
- Lead-acid (flooded, AGM, gel)
- Lithium iron phosphate (LiFePO4)
- Proper mounting and ventilation
- Battery monitoring systems
Power Management
- Battery switches and combiners
- Automatic charging relays
- Battery monitoring (Victron, Mastervolt, etc.)
- Load management controllers
Lithium Battery Upgrades
Lithium batteries offer significant advantages for marine use, but require proper system design:
Benefits of Lithium
- 3-4x more usable capacity per pound
- Thousands of deep cycles vs. hundreds for lead-acid
- Faster charging with no absorption phase
- Flat voltage curve for consistent performance
- Built-in battery management systems (BMS)
Upgrade Considerations
- Charging system compatibility
- Alternator protection
- Low-temperature charging restrictions
- Cost vs. benefit analysis
- Installation complexity
Popular Lithium Systems We Install
- Victron Smart Lithium
- Abyss
- LBP – Lithium Battery Power
- Epoch
- RELiON
- Custom Configurations
Intelligent Charging: Maximize Battery Life and Reliability
Proper charging is essential to maximize battery life and ensure reliable performance. We design and install intelligent charging systems that optimize charging profiles based on battery type, temperature, and usage patterns. Our solutions ensure that your batteries are always charged correctly, preventing damage and extending their lifespan. We utilize advanced charging technologies to give you peace of mind and optimal battery health.
Charging System Optimization
Charging Systems
- Shore power chargers
- Alternator upgrades and regulators
- Solar charging integration
- DC-DC chargers for lithium
- Multi-stage charging setup
Alternator Systems
- High-output alternator upgrades
- External regulator installation
- Alternator-to-battery connections
- Lithium-safe charging setup
- Alternator FET Charge Isolators
Shore Power Charging
- Charger sizing and selection
- Multi-bank charging
- Temperature compensation
- Smart charger programming
Solar Integration
- Solar charge controller selection
- Integration with existing charging
- MPPT vs. PWM controllers
- Panel and controller matching
Stay Connected: Remote Battery Monitoring
Gain unparalleled insight into the health of your battery bank with our remote monitoring solutions. We can install systems that allow you to monitor voltage, current, temperature, and state of charge from anywhere in the world. Receive alerts for potential problems, such as low voltage or excessive discharge, enabling you to take corrective action before issues escalate. Whether you're onboard or ashore, you'll always be in control of your power system.
Battery Monitoring
Modern monitoring systems help you understand your power usage:
- State of charge display
- Current flow monitoring
- Historical data logging
- Smartphone connectivity
- Low voltage alarms
Next Steps
Ready to experience the difference that expert onboard power management can make? Contact Captain's Marine Electrical today for a consultation. We'll assess your needs, discuss your options, and develop a customized solution that meets your specific requirements. Let us power your adventures with confidence and reliability.
Get a Free Estimate
Tell us about your power needs and we'll design a battery system that delivers reliable performance. Whether you need a simple replacement or a complete lithium upgrade, we can help.




