Specification: _x005f_x000D_ Origin: Mainland China _x005f_x000D_ Type: Module _x005f_x000D_ Condition: New _x005f_x000D_ 1. Charge/Discharge Status Indication _x005f_x000D_ 2. Built-In Charging And Discharging Power Mos _x005f_x000D_ 3. Input Voltage: 3.7V~5.5V _x005f_x000D_ 4. Charging Current: Max. 1A _x005f_x000D_ 5. Output Current: Max. 1A _x005f_x000D_ 6. Output Voltage: 5V _x005f_x000D_ 7. Bat Discharge Termination Voltage: 2.9V _x005f_x000D_ 8. Preset 4.2v Charging Voltage, Accuracy ±1% _x005f_x000D_ 9. Discharge Efficiency: 85% (Input 3.7V, Output 5V/1A) _x005f_x000D_ 10. Maximum 8uA Standby Current _x005f_x000D_ 11. Integrated Charge Management And Discharge Management _x005f_x000D_ 12. Intelligent Temperature Control And Over-Temperature Protection _x005f_x000D_ 13. Integrated Output Over-Voltage Protection, Short-Circuit Protection, Heavy Load Protection _x005f_x000D_ 14. Integrated Over-Charging And Over-Discharging Protection _x005f_x000D_ 15. Support Trickle Mode And Zero-Voltage Charging _x005f_x000D_ 16. Size: 23*17*11mm/0.9*0.66*0.43in _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Note: _x005f_x000D_ Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! _x005f_x000D_ Please allow 1-2cm measuring deviation due to manual measurement. _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ _x005f_x000D_ Included: _x005f_x000D_ 1*Charge-Discharge Integrated Module 1.Integrated Charging and Discharging: This charge-discharge integrated module combines the functions of battery charging and power supply discharge, simplifying battery management and power control. Equipped with a charging status indicator, it provides visual feedback on the battery charging progress and operational status. 2.High-Power Output: With support for a maximum output current of 1A, this boost step up power supply module meets the power supply requirements of various low-power devices such as microcontrollers and sensors. It provides a stable 5V output voltage, making it suitable for a wide range of electronic devices that require 5V power. 3.Multiple Protection Features: This lithium battery charging protection board built-in protections include overcharging, overdischarging, and short circuit protection, ensuring the safety and stability of both the battery and the connected devices. 4.Wide Input Voltage Range: Supporting an extensive input voltage range from 3.7V to 5.5V, this battery charging protection board adapts to different battery or power supply scenarios, providing flexibility in various applications. 5.Compact: The lithium battery li-ion charger board is easily integrated into embedded projects, saving space and cost. Its user-friendly design requires simple connections to the correct input and output power interfaces, allowing for easy adjustment of relevant parameters as needed.