Description Step-down Converter: Input Voltage: D.C 18V-20V; Output Voltage: D.C 12V,D.C 5V-13V; Output Current: 10A Max; Efficiency: ≥ 95%. Facilitating the transformation of batteries into a reliable 12V power source for vehicles. Featuring robust over-current and short-circuit protection, it ensures safe and uninterrupted power supply to a variety of all car appliances. Compatibile for Battery: ForMakita 18V Lit-ion Battery, works for BL1815 BL1830 BL1840 BL1850 BL1860 BL1830B BL1850B BL1860B, etc.Batteries not included ForDeWalt 18V/20V lithium batteries, works with D.CB205 D.CB206 D.CB204 D.CB203 D.CB200 D.CB201 etc. Batteries not included For 18V batteries, such as 48-11-1820, 48-11-1828, 48-11-1835, 48-11-1840, 48-11-1850, 48-11-1852, 48-11-1860, 48-11-1862, 48-11-1865, 48-11-1880, etc. Batteries not included Convenient Cigarette Lighter Interface and Innovative Design: Designed with a convenient cigarette 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. Compact, Portable, and Convenient Adapter: This product is easy to carry. Whether on a road trip or camping adventure, its lightweight design ensures you can take it with you. It's a practical and flexible device that powers car appliances. The adapter powers car gadgets and charges electronics, including automotive supplies and chargers, making it essential for travelers and outdoor enthusiasts alike.