Blue Sea 7650 Add-A-Battery

The Blue Sea 7650 Add-A-Battery is a dual-battery management system designed for vehicles, boats, RVs, and tactical installations requiring reliable secondary power isolation. This isolator allows independent charging and discharge of primary and auxiliary battery banks without parasitic drain or cross-contamination, making it suitable for various applications.

Utilizing solenoid-based technology, the 7650 automatically connects the auxiliary battery to the alternator only when the primary battery reaches full charge. This feature prevents voltage drop and ensures the secondary bank remains ready for emergency use. The unit is built with heavy-duty construction and marine-grade reliability, ensuring consistent performance across temperature extremes and in high-vibration environments.

Operators in remote field deployments and off-grid tactical setups can benefit from this device to maintain mission-critical power redundancy. The isolator is ideal for tactical communications, lighting systems, and auxiliary equipment powered during extended operations without grid access, providing peace of mind in critical situations.