Marine Electric Systems

10/10/2026

⚡🚢 **NORDHAVN 55: A MAJOR LITHIUM & ELECTRICAL REFIT!**

Meet *Explorado*! Marine Electric Systems transformed this Nordhavn 55 with a modern electrical system engineered for serious long-range cruising. 🔋🌊

⚡ 1,840Ah Epoch lithium battery bank
🔌 Twin Victron Quattro inverter/chargers
☀️ Integrated solar and alternator charging
📊 Victron Cerbo GX & Touch 70 monitoring
🧭 Rebuilt pilothouse navigation station and Starlink installation

This was more than a battery upgrade. It was a complete integration of onboard power, charging, monitoring, and navigation systems.

❄️ **NOW SCHEDULING WINTER PROJECTS!**

Planning a lithium conversion, Victron inverter system, solar installation, alternator upgrade, or electronics refit? Contact us now to discuss your project, request an estimate, and secure a place on our winter schedule before next boating season.

⚓ Marine Electric Systems — Professional Marine Electrical & Electronics serving Annapolis, Baltimore, and the Washington, DC region.

Nordhavn 55 refit: 47 kWh Epoch 24V lithium, twin Victron Quattro 24/5000s with autotransformer, ARCO Zeus, Cerbo GX, Starlink and a rebuilt nav station.

10/03/2026

⚡️⛵️ **WHAT DOES A MODERN CATAMARAN ELECTRICAL SYSTEM LOOK LIKE?**

Take a look inside one of our latest catamaran projects. 🔋⚡️

For this upgrade, Marine Electric Systems rebuilt the boat’s electrical system around:

🔋 **1,840Ah of Epoch LiFePO4 lithium**
⚡️ **Dual Victron Quattro 12/5000 inverter/chargers**
☀️ **Victron SmartSolar MPPT**
🔧 **Dual ARCO Zeus high-output alternator regulators**
🔌 **Four Victron Orion XS DC-DC chargers**
📊 **Victron Cerbo GX + GX Touch 70**
🛡️ **Properly sized Class T & ANL protection**
⚓️ **Remote battery switching and complete DC distribution**

The finished system provides approximately **23.5 kWh of lithium storage and 10,000 VA of inverter capacity**, while bringing the boat’s charging, AC power, solar, battery management, and monitoring together into one integrated system.

***Check Out the Project Our Blog***
https://marineelectricsystems.net/blogs/projects/catamaran-electrical-upgrade-victron-quattro-epoch-lithium

This is what we mean when we say **we build marine electrical systems — not just install equipment.**

Whether you're looking to add lithium, upgrade your inverter system, improve charging, add solar, modernize your electronics, or completely rebuild an aging electrical system, our team can design and install a system around your boat and the way you use it. ⚓️🔧

**EXPLORE MARINE ELECTRIC SYSTEMS:**
www.marineelectricsystems.net

🛒 **SHOP OUR ONLINE STORE:**
Find Victron, Epoch, ARCO Marine, Garmin, Raymarine, Simrad, B&G, EGIS and other marine electrical and electronics products directly through our website.

📅 **PLANNING A WINTER PROJECT?**

Now is the time to start getting your electrical and electronics upgrades on the schedule. Don't wait until spring to discover that everyone is trying to book the same few weeks.

⚡️ **Lithium**
⚡️ **Victron**
⚡️ **Solar**
⚡️ **Alternators & regulators**
⚡️ **Inverter/chargers**
⚡️ **Marine electronics**
⚡️ **Shore power**
⚡️ **Complete electrical system upgrades**

**Marine Electric Systems**
🔧 ABYC-Certified Marine Electrical Contractor
📍 Annapolis • Baltimore • Washington, DC

⚓️ **Build it right. Know what’s happening on your boat.**

How we rebuilt our catamaran's 12V system with two Victron Quattro 5000s, 1,840Ah of Epoch LiFePO4, a Cerbo GX, and Touch 70. Photos and specs.

07/31/2026

*Another Complete Lithium Power System Upgrade Finished!* ⚡

We recently completed a full electrical modernization on this beautiful **West Bay 58**, transforming an aging AGM battery system into a powerful, fully integrated Victron and Epoch lithium energy system.

🔹 1,840Ah of **Epoch Lithium V2** batteries
🔹 Dual **Victron MultiPlus 3000W** inverter/chargers configured for true split-phase operation
🔹 **Victron Cerbo GX & Touch 70** monitoring system
🔹 **ARCO Zeus** smart alternator regulator
🔹 Custom battery shelves, hold-downs, Class-T fuse blocks, and heavy-duty 4/0 cabling
🔹 New AC and DC distribution upgrades
🔹 Complete system documentation and as-built electrical diagrams for future service

This wasn't just a battery swap—it was a complete redesign of the vessel's power system to provide greater reliability, faster charging, increased safety, and the ability to comfortably enjoy extended time away from the dock.

Whether you're planning long-range cruising, spending weekends on the hook, or simply tired of dealing with outdated charging systems, we design and install custom electrical solutions built to ABYC standards using industry-leading equipment.

If you're considering upgrading your boat's electrical system, now is the perfect time to start planning your project before next season.

📞 Contact Marine Electric Systems today to schedule a consultation and let us design the right power system for your boat.

07/12/2026

Another major electrical upgrade underway at Marine Electric Systems.

We recently completed Phase 1 of a lithium conversion on this Nordhavn 76, laying the foundation for a modern, reliable, and highly capable onboard power system.

This phase included the installation of:

* Dual Victron 24V 5000W MultiPlus inverter/chargers, programmed to provide 120/240V split-phase power for seamless operation of onboard AC systems.
* A Victron SmartShunt for precise battery monitoring.
* A Victron Cerbo GX paired with the Touch 70 display, giving the owner complete visibility and control of the vessel’s electrical system from one intuitive interface.

By upgrading the inverter, monitoring, and control systems first, we’ve created a solid platform that’s fully prepared for Phase 2—the complete lithium battery conversion. This staged approach minimizes downtime while ensuring every component is properly integrated and optimized for maximum performance and reliability.

Stay tuned as we continue transforming this Nordhavn 76 into a true next-generation electrical system.

07/10/2026

This 39’ Kadey Krogen is now equipped with a reliable, high-performance electrical system built for extended cruising and worry-free anchoring.

This upgrade included:
🔋 600Ah Epoch Lithium Battery Bank
⚡ Victron MultiPlus 3000W Inverter/Charger
🚤 Arco Zeus 275A High-Output Alternator & Smart Regulator
📱 Victron Cerbo GX & Touch 70 for complete system control
🌎 Starlink-connected VRM remote monitoring
🔘 Egis Mobile battery switches with push-button controls at the helm
🛠️ Custom-built battery tray for a secure, ABYC-compliant installation

Whether you’re looking for longer battery life, faster charging, or complete remote monitoring, Marine Electric Systems designs and installs custom power systems built specifically for your boat.

📍 Serving Annapolis, Baltimore, Washington, DC, and the Chesapeake Bay.

Ready to upgrade your boat? Contact Marine Electric Systems today for a custom lithium power system built to fit your cruising needs.

07/03/2026

⚓ Raymarine Electronics & Power System Upgrade | Hallberg-Rassy 40 ⚓

We recently completed a comprehensive electronics and power system refit on this beautiful Hallberg-Rassy 40 sailing vessel, transforming it into a modern, reliable platform ready for coastal cruising and offshore adventures.

This project included:

🌊 Raymarine Axiom Pro 2 chartplotter mounted at the port helm for fast, intuitive navigation.
🎛️ RMK-10 Remote Keypad installed at the helm, allowing full control of the chartplotter without reaching for the display.
🧭 Complete Raymarine Evolution Autopilot upgrade with a new autopilot computer, EV sensor compass, and p70s control head for precise steering performance.
🌬️ New Raymarine masthead wind instrument delivering accurate apparent and true wind data.
📡 Raymarine Quantum 2 Radar installed on a Seaview radar mount for outstanding target tracking and situational awareness.
📊 New Raymarine i70s sailing instruments installed at the navigation station, companionway, and helm, keeping critical sailing information visible from anywhere onboard.
☀️ 430W solar panel professionally mounted on the solar arch and integrated with a Victron SmartSolar MPPT charge controller for efficient renewable charging.
🌐 Starlink Mini mounted to port, providing reliable high-speed internet while cruising or at anchor.
The result is a fully integrated navigation, autopilot, communications, and energy system that enhances safety, improves situational awareness, and provides the owner with dependable performance for years to come.

At Marine Electric Systems, we specialize in custom marine electrical and electronics installations designed specifically for each vessel and the way its owner cruises. Whether you’re preparing for offshore passages or upgrading your weekend cruiser, we can help design and install a system that fits your needs.

📍 Proudly serving Annapolis, Baltimore, Washington D.C., and the Chesapeake Bay.

06/26/2026

Ensuring your boat's wiring is safe isn't just about protecting your investment—it's about safeguarding lives. Let’s explore how you can assess the safety of your boat's wiring, and what steps you can take to keep your vessel in working condition.

Ensuring your boat's wiring is safe isn't just about protecting your investment—it's about safeguarding lives. Let’s explore how you can assess the safety of your boat's wiring, and what steps you can take to keep your vessel in working condition.

06/19/2026

Knowing when to seek professional help is essential for ensuring your boat remains safe and operational. Here are some common problems found in marine electrical systems.

Knowing when to seek professional help is essential for ensuring your boat remains safe and operational. Here are some common problems found in marine electrical systems.

05/29/2026

Whether you're a seasoned sailor or new to boating, understanding essential summer boat maintenance steps is crucial. This guide will walk you through everything you need to know.

Whether you're a seasoned sailor or new to boating, understanding essential summer boat maintenance steps is crucial. This guide will walk you through everything you need to know.

05/24/2026

⚡ Another powerful lithium and inverter system upgrade completed. This vessel is now equipped with:

🔋 Four Epoch 12V 460Ah lithium house batteries
⚙️ Dual Victron 12V 5000W Quattro inverter/chargers
🔄 Victron auto transformer
📱 Victron Cerbo GX system monitoring with auto generator start/stop functionality
🔌 50A SmartPlug shore power connection
🛡️ ProSafe 60A galvanic isolator

This setup delivers exceptional onboard power reliability with the ability to invert the vessel’s entire electrical system, allowing for quiet operation while running multiple air conditioning units and other onboard loads without heavily relying on the generator. ❄️⚓

The increased charging capability significantly reduces generator run times while improving overall system efficiency and performance. ⛵⚡

To further enhance charging performance, we also installed dual ARCO Zeus alternator regulators — one dedicated to each engine — providing optimized alternator output and advanced charging control for the lithium battery system. 🔧🔋

Professional marine electrical and lithium power solutions built for reliability, performance, and life on the water. 🌊