Features: Smart converter module with automatic stepping down boosters technology delivers precise constant current/voltages control for efficient battery charging (95% conversion efficiency) across lithium, leads acid, and other battery types. Features integrated over voltages/current protections, PCB construction, and plugs and play installation for seamless integration into electronics projects and industrial systems. for electronics engineers, enthusiasts, and industrial technicians requiring power management solution for prototyping or equipment maintenance. Perfect for charging stations, robotics power systems, solar energy setups, and portable devices requiring stable voltages regulation in workshop or field environments. This development board accessory combines professional safety mechanisms with space saving design, making it essential for energy efficient charging across commercial and hobbyist applications. Specifications: Materials: PCB Size: 5x3.7x1.3cm Package Includes: 1PC Charging Module note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.