Key Benefits Eliminates battery drain and parasitic draw when a vehicle or boat is stored or not in use, helping preserve battery charge and extend battery life. Provides a simple, reliable way to isolate and secure the electrical system for safety, maintenance, or storage. Built to resist rust, corrosion, and wear for a longer service life in automotive and marine environments. Features & Function Durable construction: made from high-quality materials that resist rust, corrosion, and wear for dependable long-term performance. Prevents leakage currents and unintended battery loss by fully disconnecting the battery from the electrical system when switched off. Waterproof protective cap covers the keyhole when not in use to keep out dust and water. Simple key operation: turn the key to switch power on or off. The red key stays locked in the ON position and can be removed only when the switch is OFF, providing a clear physical indicator and secure isolation. Installation & Compatibility Easy to install: designed to be mounted on the negative (ground) cable of the battery for quick integration into vehicle and marine electrical systems. Fits typical vehicle and boat battery setups and provides a straightforward, tool-minimal installation process. Performance & Reliability Effectively isolates and secures electrical circuits to prevent slow battery discharge and extend the usable life of the battery. Corrosion-resistant materials and a protective cap help maintain reliable switching action and protect internal components from the elements. Typical Use Scenarios Seasonal storage: disconnect the battery on cars, motorcycles, or boats that are stored for months at a time to prevent battery drain. Maintenance and safety: quickly isolate the battery when performing electrical repairs or when leaving a vehicle in storage, preventing accidental starts or shorts. Long-term parked vehicles and trailers: keep batteries charged and reduce the need for frequent jump starts or replacements by eliminating parasitic draws. How It Works (Quick) Mount the switch on the battery negative cable. Turn the key to the ON position to connect the battery; the red key locks in place. Turn the key to the OFF position to disconnect the battery; the key can be removed to secure the circuit. Durable, easy to use, and designed to prevent unwanted battery discharge, this battery disconnect switch is a practical solution for vehicle and boat owners who need reliable isolation and protection of their electrical systems.