The battery adapter comes with wire terminals, 30A fuse, screws, and other accessories. These components make your DIY projects easier and are suitable for both indoor and outdoor use. (Note: Batteries are not included.) This adapter can be safely used to 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 the correct polarity of both the power source and the load before connecting to prevent damage from reverse connection. b. Ensure the input power source provides sufficient voltage and power to operate the connected device. c. The voltage requirement of the connected device must match the output voltage of the converter. The power demand of the load must not exceed the maximum rated output power of the converter. Accessories may vary in style or color between production batches, but this does not affect functionality. Color: Yellow & Silver Material: ABS Package Contents: 1 set x Lithium battery adapter step-down module Note: Light reflection and display settings may cause slight variations in the color shown in images compared to the actual product. Measurement tolerances may vary by +/- 1-3 cm.