This 18V to 12V step-down converter allows you to power 12V automotive appliances using standard 18V/20V lithium-ion batteries. Designed for versatility, this adapter features a cigarette lighter socket output, making it suitable for portable car refrigerators, inflators, and other 12V accessories. The unit includes integrated safety features such as over-current, short-circuit, and low-voltage protection to ensure stable operation. Compatible with major 18V battery platforms including Makita, DeWalt, Milwaukee, and Bosch.