Features: This Battery Module with 5V/9V/12V output, simultaneous charging/discharge capability, and built in protective ensures uninterrupted power supply for diverse devices. Designed for 18650 batteries, this module features input port for rapid charging and seamless integration into electronics or embedded systems. Ideal for electronics enthusiasts, engineers, and anyone needing backup power solution in portable setups or home projects. Maintains continuous operationalfor routers, security cameras, or portable gadgets during power outages, outdoor adventures, or prototyping phases. Combines lightweight construction with automatic power switching, making it essential for backups, solar energy, and mobile device charging applications. Specifications: Component:PCB + Electronic Components Type:B/A Electricity:5V/9V/12V Size:Approx.89x22mm/3.5X0.86inch Package Includes: 1Pc Power Supply 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.