The battery adapter comes with wire terminals, 30A fuse, screws, and other accessories. These included components make your DIY installation easier and are suitable for both indoor and outdoor use. (Note: Batteries are not included.) You can safely upgrade electric ride-on toy cars, remote control trucks, robots, work lights, and similar devices. Input voltage: 17V-65V Output voltage: 12V Output current: 10A Power: 120W 1. Wiring instructions Input side: Red wire – Connect to the positive terminal of the power source (red wire) Black wire – Connect to the negative terminal of the power source (black wire) Output side: Yellow wire – Connect to the positive terminal of the load Black wire – Connect to the negative terminal of the load 2. Precautions a. This buck converter does not have reverse polarity protection. Always verify correct polarity when connecting to avoid damage from reverse wiring. b. Ensure the input power source provides sufficient voltage and power to support the connected output device. c. The voltage requirement of the output device must match the converter’s output voltage (12V), and the load's power consumption must not exceed the converter’s maximum capacity (120W). Accessory styles and colors may vary slightly by production batch, but this does not affect functionality. Color: Yellow & Silver Material: ABS Package Contents: 1 set x Lithium battery adapter step-down module Note: Lighting effects and monitor settings may cause slight color variations between the product image and the actual item. Measurement tolerance: +/- 1-3 cm.