Compatible For 18V Li-ion Batteries: The DC power wheel adapter is perfectly compatible For 18V batteries Step-down Converter: Input voltage: DC 18V-20V; Output: DC 12V/10A Max; Efficiency: ≥ 95%. Ideal for a variety of car appliances Designed with a convenient lighter interface, making it effortless to connect and power car appliances. Its simple and convenient design eliminates the need for extra installation steps or complicated wiring, ensuring a worry-free user experience High Quality Material & Safe to Use: The automatic buck converter is made of high quality chip and high quality plastic, stable and safe. Designed with an transformer, can let you enjoy the fun of DIY Real-time Protection: The voltage reducer transformer shuts off automatically if there's overvoltage, overload, under-voltage, overcurrent, overheating or short circuit. Stop excessive transient current timely to avoid damage to the battery and the equipment Color: Green Material: ABS Package Contents: 1 * Converter for Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.