Booster Cables The 16-Feet Top Post and Side Terminal Automotive Booster Cables are designed for use with 6-12-volt batteries to start full-sized vehicles All energized surfaces on the Everstart Booster Cables are shielded and recessed to protect against the possibility of shock Triple polarity system includes color coding, stamps and glow-in-the-dark labels to identify negative and positive cables Red for positive terminals and black for negative terminals UL listed and adheres to industry standards for quality and safety assurance