Battery Doctor 20109 Battery Disconnect Knife Switch For Top Post Batteries, Low Profile Horizontal Operation – 12V Car Battery Kill Switch For Negative Post – Made In Usa

Stop unwanted parasitic power draw with our patented Battery Disconnect Knife Switches. It is perfect for mounting on a negative battery post to disconnect the ground and battery. Has 5/16-18 stud and wing nut for extra connections. Easy to install and use. A fast and effective way to extend the life of your batteries. Great for cars, RV, ATV, UTV, trucks, boats, campers, and other power disconnect purposes