Description: Compact Design: This 1.2A charging discharge modules are meticulously designed to be smaller than the cross section of an 18650 battery, with dimensions of 1.6 cmx1.2 cmx0.44 cm/0.63 inchx0.47 inchx0.17 inch, making it ideal for integration into tight spaceVersatile Type C: Equipped with a Type C that supports both input and output functions, the discharge charger boards offer convenient charging and discharging capabilities without the need for additional adaptersEfficient Power Management: The 1.2A charging discharge modules operates on a 4.5-5.5V power supply suitable for single cell batteries (including 18650), supporting up to 1.2A current with stable performance at 1A when used as directedProtection Features: The discharge charger boards includes overcharge and over discharge protection with a discharge cut off at 2.9 V and charging cut off v at 4.2 V, ensuring safe operation and longevity of your batteriesAutomatic Input Output Switching: Seamlessly switch between charging and discharging modes based on external v presence, featuring LED indicators for updates green flashing during charging, solid green when fully charged, no light in standby mode without load, and blue light during load discharge with low standby power consumption of approximately 0.8 mA Specification: Material:Electronic Components Size Chart: 1.6 cmx1.2 cmx0.44 cm/0.63 inchx0.47 inchx0.17 inch Package Includes: 41.2A Charging Discharge Modules Note: Please allow slightly errors due to manual measurement and different monitors.