Monkey Fist Marine is your Pacific Northwest expert for Solid State Marine battery systems. We specialize in replacing heavy, traditional power banks with next-generation solid-state technology—delivering more power, less weight, and unmatched reliability for the modern mariner.

The Solid State Advantage

• Ultralight Performance: Up to 75% lighter than AGM and 50% lighter than standard Lithium (LFP), significantly improving vessel speed and fuel efficiency.
• All-Weather Reliability: Exceptional discharge and charging performance in extreme temperatures, functioning flawlessly down to -20°C (-4°F).
• Superior Density: Smaller physical footprint with higher usable energy, allowing for massive power banks in tight engine rooms or lockers.
• Dual-Purpose Power: High-output cranking power for engine starts combined with deep-cycle endurance for house loads and trolling motors.

Professional Systems Integration

We don’t just sell batteries; we engineer complete power solutions. Our certified installation services include:

• Full System Audits: Tailoring battery capacity to your specific cruising or fishing needs.
• Seamless Integration: Recalibrating chargers, alternators, and monitors for optimized solid-state performance.
• Certified Support: Expert local installation backed by an industry-leading 8-year warranty.

Upgrade your vessel to the most advanced energy storage on the water.

Would you like to focus on a specific setup, such as a trolling motor bank or a yacht refit? Give us a call!