Product Overview
Add A Battery Kit-120A

Never get stranded again with the Blue Seas Add A Battery Kit-120A. This comprehensive kit provides a seamless, reliable solution for managing dual battery systems, ensuring you always have power for starting your engine while keeping your house loads running smoothly. Enjoy peace of mind knowing your essential electronics are protected, and extend your adventures on the water without the worry of a dead battery.
Key Features
- **Dual Circuit Plusâ„¢ Battery Switch:** Simplifies battery management with one ON/OFF switch, isolating engine and house circuits for optimal performance and combining batteries for emergency starting.
- **SI-ACR Automatic Charging Relay:** Intelligently combines batteries during charging and isolates them when discharging or starting the engine, maximizing battery life and protecting sensitive electronics.
- **Start Isolation Protection:** Prevents voltage spikes and sags during engine starting from affecting sensitive navigation and electronic equipment.
- **Ignition Protection:** E-marked and compliant with UL1500 and SAE J1171 standards, ensuring safe operation in gasoline-powered boats.
- **Robust Construction:** Built to withstand harsh marine environments with IP66 water jet protection and tin-plated copper studs for maximum conductivity and corrosion resistance.
- **High-Capacity Performance:** Handles up to 120A continuous load, suitable for larger outboards and inboards with stock alternators.
- **Easy Installation:** Designed for straightforward installation with clear instructions and readily available support resources.
What's in the Box
- 1 x e-Series Dual Circuit Plusâ„¢ Battery Switch (5511e)
- 1 x SI-ACR Automatic Charging Relay - 12/24V DC 120A (7610)
Specifications
The Captain's Take
After years of battling unreliable battery systems, I finally installed the Blue Seas Add A Battery Kit-120A, and it's a game-changer. The automatic charging relay keeps both batteries topped off effortlessly, and the start isolation feature has eliminated those annoying electronics resets during startup. This kit provides the reliable power I need for long days on the water, and I highly recommend it to any serious boater.