Product Overview
Solenoid Auto Charging Relay

Keep your onboard electrical system running smoothly and efficiently with the Blue Seas Solenoid Auto Charging Relay. This robust, dual-sensing relay automatically manages your battery banks, ensuring optimal charging while protecting sensitive electronics. It seamlessly combines your batteries when charging and isolates them during discharge and engine starting, eliminating the hassle of manual switching and maximizing the lifespan of your batteries. This intelligent system ensures you'll always have ample power for your essential onboard systems, from navigation and lighting to bilge pumps and appliances, giving you peace of mind on the water.
Key Features
- **Automatic Charging & Isolation:** Intelligently combines batteries during charging and isolates them when discharging or starting the engine, simplifying battery management and extending battery life.
- **Start Isolation Protection:** Safeguards sensitive electronics from voltage fluctuations during engine cranking, preventing damage and ensuring reliable performance.
- **High-Current Capacity (120A Continuous/210A Intermittent):** Handles high-output alternators, ideal for boats with demanding electrical needs.
- **Dual Voltage Compatibility (12V/24V):** Automatically detects and adapts to your system voltage, eliminating the need for manual configuration.
- **Ignition Protected & Waterproof (IP67):** Ensures safe and reliable operation in harsh marine environments, withstanding temporary submersion.
- **Dual Sensing:** Monitors voltage on both battery banks for precise charging and isolation control.
- **Remote LED Indicator (Optional):** Allows convenient monitoring of relay status from any location on board.
Specifications
The Captain's Take
After years battling unreliable battery setups, I finally installed the Blue Seas Solenoid Auto Charging Relay and it's a game-changer. No more manual switching, no more worrying about draining my starting battery, and my electronics are protected. This relay is a must-have for any serious boater who wants a reliable, hassle-free electrical system.