Battery Disconnect, Top Post

This handy cut-off switch lets you quickly and easily disconnect your battery for safety when servicing your vehicle or in storage, to eliminate battery drain while vehicle is not in use, and for security as an anti-theft device. Install on the negative post of your battery, attach battery cable to the switch and you’re done! To engage power just hand tighten the black knob. To disconnect power, slightly loosen the knob or, on this side-post model, completely remove the knob to discourage unauthorized use while stored at home, parked, or when traveling.