【Installation method】Battery Quick Disconnect Switch is easy to install. Before installation, check whether the battery negative pole and battery clip (original battery connector) are corroded (white powder), and clean up the dirt to avoid bad between the battery and the battery switch. Tighten the knob before installation, and then install it on the car. After installation, check for loose connections to ensure a good installation. 【Wide range of application】Disconnect Isolator Switch is widely used in cars, boats, trucks, RV vehicles and electrical equipment for various types of batteries with a pile head diameter of 15-17mm. 【Stable Performance】Battery Cut Off Switch Heavy Duty is made of selected zinc alloy copper-plated materials, with stable performance and high reliability, providing isolation and for your vehicle battery 【Excellent Performance】Car Battery Shut Off Switch has excellent performance, especially for solving the leakage and loss of electricity in cars, motorcycles and cars that do not use batteries frequently. 【Long service life】 The Isolator Switch has a long service life, release the switch for 2-3 tu , and the whole vehicle will be powered off. Tighten the switch properly to start the vehicle. Battery kill switch facilitates easy battery disconnection to prevent battery draining when not in use