Features: Compact 5V 2.4A Charging Discharge Module delivers 12W output with 96% conversion efficiency, featuring USB C bidirectional charging and real time indicators for optimized 18650 battery management. This power module boosts 3.7V/4.2V 18650 batteries to stable 5V output, supports 2.4A high current devices, and combines small sized PCB design with input/output voltages monitoring LEDs. Ideal for electronics enthusiasts, project builders, and portable device developers requiring efficient battery powered solution in robotics,gadgets, or power systems. Perfect for outdoor equipment charging and compact installations where space constrained 18650 battery integration is critical. Engineered for high drain applications, this versatile USB C power module ensures reliabled energy conversion with minimal loss, making it essential for smart device prototyping and mobile power management systems. Specifications: [Component]: PCB [Product size]: 17.5×10×6mm [Product weight]: 4g [Charging and discharge voltages and current]: 5V/2.4A [Output power]: 12W [Energy conversion efficiency]: 96% [Operating temperature ranges]: -40°C ~85°C [Type]: USB C/Type C [Applicable battery cut-off voltages]: 4.2V for Portable electronic devices: charging of smartphones, tablets and handheld game consoles. Package Includes: 1/3pcs Charging and discharge power module note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution