12-48V Top Post Battery Isolator Disconnect Switch, Heavy Duty Power Cut Master Zinc Alloy On/Off Car Switchs for Truck Boat Yacht Caravan Motorcycle

【Direct Top-Post Installation】This battery disconnect switch mounts directly onto the negative top post, allowing you to manage battery power without additional cables or extra hardware. A simple, clean solution for power control. 【Durable ABS & Copper Build】Built with a tough ABS outer shell and high-quality copper contacts, this battery isolator switch is designed for consistent, reliable performance during everyday vehicle use in cars, RVs, and boats. 【Clear ON/OFF Rotary Control】Provides simple, intuitive rotary operation for managing 12V–48V battery systems. This battery kill switch lets you instantly cut or restore power with a easy quarter-turn. 【Fits Standard Battery Posts】Engineered to fit negative terminals measuring 15.5–17mm. This versatile car battery switch is suitable for a wide range of automotive, marine, and leisure batteries. 【Ideal for Storage & Maintenance】Disconnecting the battery helps reduce unnecessary power drain during long-term parking or storage. This battery isolator switch also provides convenient power management during routine maintenance work.