Easy to install and operate This rotary battery disconnect switch is straightforward to install and use, simplifying battery isolation for quick setup. Heavy duty and reliable Constructed from high-quality materials, it is corrosion resistant, provides good conductivity, and is durable and safe in everyday use. Compatibility and specifications Designed for use with the battery top post (upper terminal) and the negative terminal. Max current 500 A, nominal current 100 A. Suitable for 6 V, 12 V, and 24 V battery systems in cars, trucks, motorhomes, boats and trailers. Uses a flat-spade terminal for connections. Energy saving and protection The main switch with a flat-spade terminal isolates the battery and protects electrical systems. Prevents any battery drain when the vehicle or boat is not in use, reduces unnecessary discharge, and helps deter theft or unauthorized use. Practical use scenarios - Long-term storage: disconnect to prevent battery drain and deter theft for cars, trucks, motorhomes, boats, and trailers. - Seasonal/off-season storage: preserve battery health in boats and motorhomes when not in use. - Maintenance and safety: isolate the battery during electrical work or component service to ensure safe handling.