Dual USB 5V 1A-2.1A Mobile Power Charger PCB Board Step Up Boost Bank Charging Module with Automatic Protection

Reference Weight:0.018kg (0.04lb.) Introduction: 1.Input:micro USB interface 5V 1A 2.Output:USB female port 1-5V 1A;USB female port-2 5V 2.1A 3.Function:double USB output 4.Display:4 LEDs to display battery capacity 5.Protection:overcharging protection,overcurrent protection,overdischarging protection,high temperature protection,electric leakage protection 6.Battery positive connects with chip B+,battery negative connects with B-.Please notice that don't transposition,or it will cause great damage to the module 7.Size:72*26*10mm 8.Conversion Rate:>=85% 9.Press switch,the indicator light will be on,and it will start to charge;when the bettery is fully discharged,it will stop output automatically Package Included: 1 x 5V 1A Step-Up Module