Shop Nilight ON Off Battery Switch 12V 24V 48V 600A High Current Heavy Duty Battery Power Cut Master Switch Disconnect Isolator for Truck Vehicle Trailer RV Marine Boat Yacht in high quality, support 2 Years Warranty. With high quality. Fitting for cars, marine boats, RVs, campers, travel trailers, trucks, ATVs, UTVs, battery banks, and other devices. Design for 2 batteries, can switch to battery 1 / battery 2 separately or both on and off together. It is simple to install.