Buck Converter: Input voltage: DC 18V-20V; Output voltage: DC12V; Output current: Max 20A; Output power max 240W. Built-in over-voltage and under-voltage protection, automatically shuts off if battery voltage drops below 14.4V, protecting the battery and 12V devices. Compatibility: Fully compatible with 18V lithium batteries, suitable for models 48-11-1815, 48-11-1850, 48-11-1820, 48-11-1840, 48-11-1815, etc. Our battery adapter connector is well designed, perfectly fits your battery, easy to install and remove. Better Safety: The voltage regulator has a built-in smart chip with over-current, over-voltage, under-voltage, overload, under-load, short-circuit, over-temperature and other functions, multiple intelligent protections to protect your devices from overload damage. The battery adapter also comes with an extra fuse holder and a 30A fuse, ensuring you can use it safely. Easy to Use: We connect the battery adapter and voltage converter with 2 heat-resistant wires and fuse holders, which is more convenient to use, just install the battery into the battery adapter and connect the voltage converter to your device. (Note: Battery not included) Wide Application: The converter is suitable for a variety of 12V devices, perfect for upgrading power tools, ride-on toys, golf carts, cars, trucks, speakers, monitoring devices, LED light strips, work lights or robot DIY, etc. Color: Red Material: Plastic Package Contents: 1 x Converter 1 x Bicycle Battery Adapter 1 x Connector 3 x 30A Fuses The above is only the package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be a little different from the real thing. The measurement allowed error is +/- 1-3 cm.