[Step-down Converter]: Input Voltage: DC 18V-20V; Output Voltage: DC 12V,DC 5V-13V; Output Current: 10A Max; Efficiency: equal 95%. Ideal for 18V battery users, 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 18V Battery]: Perfectly compatible with for 18V Lit-ion Battery, works with BL1820 BL1840B BL1820B BL1815B BL1835 -400 BL1845B BL1845 194205-3 194204-5 BL1830B BL1850B BL1860 etc. Our battery adapter connector is well-design, snugly fits your battery, easy to install and remove.Battery adapter with over-load, no-load power-off, over-current, and low-voltage protection. [Convenient Lighter Interface and Innovative Design]: Designed with a convenient lighter interface, making it effortless to connect and power car appliances. Its simple and convenient design eliminates the need for