Battery Protector (T1) - 12V Don't ever get stranded because of a dead battery - in all cars, all makes and models, the Battery Prog Brain monitors your battery voltage automatically disconnecting the battery before it is completely drained Ensure your vehicle always starts - Battery Prog Brain preserves enough charge to start your vehicle saving you downtime, inconvenience, and potential safety hazards To reconnect the battery simply lift the hood and press the button - start your vehicle and you are on your way Fully draining a battery decreases its useful lifespan - the Battery Prog Brain extends battery life in all seasons and all conditions Easily installs to any vehicle battery with multiple configuration options for every model and all of the necessary hardware is included for the mounting options, only tools required are wrench and screwdriver