DC 5V 2.1A Mobile Power Diy Board 4.2V Charge Discharge 3.7V Lithium 18650 Battery Protection Indicator Board

Description: This is a multifunctional 3.7V/4.2V Mobile Power Diy module,3 in 1 Function: charge,discharge and battery protection.It is very suitable for DIY mobile power. Specifications: Charge voltage : DC 4.5V-5.2V (If the power supply is 5.2V-5.5V, please parallel diodes (eg SS34 SMB)) Charging current : 0-2.1A Charge quiescent current : 100uA Full charge voltage : 4.2V+-1%. Discharge current : 0-3.5A; Discharge quiescent current : 50uA Discharge conversion efficiency : maximum 96% Output voltage : 5V Output current : 0-2.1A; Operating ambient temperature : -20 to +85 Size : 26.7 x 18.1 x 5.7mm Features: - Comes with battery protection, do not need battery protection board (if your battery comes with a protective board, it does not matter) - Overcurrent protection(OCP) - Overvoltage protection(OVP) - Short circuit protection(SCP) -Over temperature protection(OTP) Pin Description: 1 VIN : Charging port + 2 GND : Charging port - 3 BAT : Battery port + 4 GND : Battery port - 5 GND : Output port - 6 VOUT: Output port + 7 KEY : Output trigger port(Low pulse trigger) 1. In discharge mode(In the charging mode,the KEY function is invalid) the KEY Trigger once,turn on the output;Continuous trigger twice: turn off the output. 2. When the load access, it will automatically turn on the output. But if the load is less than 50MA, the output will be turned off after 30 seconds NOTE: If the output load current is less than 50MA, turn off the output after 30 seconds. If the output load current is greater than 50MA,continuous turn on the output Applications: Battery powered equipment Lithium Battery 18650 14500 Mobile phone diy Solar charging MP3/MP4 player Audio equipment Video equipment Portable Devices Bluetooth Wifi Applications MCU development board Package Included: 1 x DC 5V 2.1A Battery Protection Indicator Board