2Pcs 5V Boost Converter Step-Up Power Module Lithium Battery Charging Protection Board LED Display USB for DIY Charger 134N3P

|Product Introduction: 1.Input Voltage: 3.7V~5.5V2.Charging Current: 1A(max)3.Output Current: 1A(max)4.Output voltage: 5V 5.BAT Discharging Stop Voltage: 2.9V 6.Discharging Efficiency: 85%(input 3.7V output 5V/1A) Features: 1.Charging and discharging indication2.Internally installed charging and discharging power MOS 3.Preset 4.2V charging voltage, precision ±1%4.Max 8uA standby current5.Integration charging management and discharging management6.Intelligent temperature control and overtemperature protection7.Integration output overvoltage protection,short coircuit protection,overload protection8.Integration overcharging and overdischarging protection9.Support trickle mode and zero voltage charging When charging :red light flashing;Full charged :red light light for a long time.|