Battery Doctor 20138 Battery Disconnect Knife Switch for Top Post Batteries, Low Vertical Operations – 12v Battery Kill Switch for Negative Post – Perfect for Saving Car Battery - Made In USA

Battery Doctor. The easy way to disconnect electrical power on any vehicle, without tools. Simply lift the knife; power is cut. Prevents shorts and fires when working on electrical systems; discourages theft; eliminates battery drain on idle batteries. California Prop 65 - Warning, This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.