Features: Efficiently convert 3.7V battery power to stable 12V output with this compact converter module, featuring intelligent regulation and overcharge protective for sensitive electronics. Engineered with stabilization chip, this lightweight module maintains consistent 12V output while supporting multiple 3.7V battery types. Ideal for electronics enthusiasts, field engineers, and outdoor adventurers requiring power solution for equipment. Perfectly power amateur radio setups, portable systems, and camping gear in remote locations where stable output is critical for device functionality. Its ABS housing and optimized thermal design ensuring long lasting across temperature extremes ( 20°C to 60°C) Specifications: Component:Metal Type:B/A Size:Approx.77x21mm/3.03x0.83inch Package Includes: 1 Set Regulator Module note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.