Power Bank Charging Module
* 5 V Micro USB DIY Step up Charging Module with charging Protection(134N3P). It is provided with USB A receptor at one side output and another side is USB Micro B receptor for the input charging source.
* Input Supply Voltage: 3.7- 5.5 Volt.
* Charging Current : 1 A max.
* Output Voltage : 5 V
* Size : 21 mm* 17* mm* 10mm