ITEM NAME:Charge Discharge Boost 5V/2.1A Protection 3.7V/4.2V Battery DC-DC UPS DIY Module.If the load is less than 50MA, the output will be turned off after 30 seconds; if the load is greater than 50MA, the output will continue to be turned on. Short circuit protection (SCP). 1 VIN: Charging port is Positive input +.
