- Quick and Easy Installation: This battery main switch is designed for 12V/24V DC systems. With a simple turn of the key, you can disconnect battery power within one second. The switch can only be removed when in the off position, ensuring safety and security. We recommend mounting it on the negative battery terminal to prevent battery drain while your vehicle is stationary and to deter theft. - Durable Construction: Crafted from strong, flame-retardant ABS hard plastic, this battery switch boasts an M8 pure copper clamp and stainless steel hex nuts for enhanced conductivity. It is resistant to high temperatures, rust, and corrosion, ensuring long-lasting performance. The quick disconnect feature helps extend your battery's lifespan by preventing unnecessary power consumption. - Versatile Applications: This killswitch is suitable for a variety of vehicles and devices, including cars, trucks, boats, yachts, and battery banks. It can also be used to control various electrical devices such as fog lights and suspension systems, making it ideal for both indoor and outdoor use. This fast battery main switch is essential for maintaining your battery charge over time. - Comprehensive Package: The battery disconnect switch kit includes 1 M8 battery switch, 1 waterproof cover, 2 removable keys, 2 copper terminals, and 2 insulation covers. The copper terminals simplify wiring, while the insulation covers enhance safety by preventing direct contact with wires. The weather cap protects the keyhole from dust and moisture, ensuring reliable operation in various environments.