Features Red light flashes when charging, red light is always on to indicate full; discharge blue light is flashing A single-chip solution designed for mobile power, with integrated charge management module, discharge management module, power detection and LED indicator module and protection module. Built-in charging and discharging power MOS, charging current can be set, Z large charging current and Z large discharging current 1A. It integrates almost all protection functions such as constant temperature charging operation mode, over temperature protection, over charge and over discharge protection, output over voltage protection, output overload protection, output short circuit p The application circuit is simple, and charging management and discharge management can be realized with few components. Specification: Condition: 100% Brand New Charge and Discharge Status Indication: red light flashes when charging, red light is always on to indicate full; discharge blue light is flashing Built-In Charging And Discharging Power Mos Input Voltage: 3.7V~5.5V Charging Current: Z 1A Output Current: Z is 1A Output Voltage: 5V BAT Discharge Termination Voltage: 2.9V Preset 4.2V Charge Voltage with ±1% accuracy Discharge Efficiency: 85% (input 3.7V, output 5V/1A) Z Large 8ua Standby Current Integrated Charge Management and Discharge Management Intelligent Temperature Control and Over Temperature Protection Integrated Output Overvoltage Protection, Short Circuit Protection, Heavy Duty Protection Integrated Overcharge and Overdischarge Protection   Package List: 10 * Step Up Power Supply Module  Package List