3.7V to 5V 1A 2A Booster Module DIY Power Bank Main Circuit Board Built-in 18650 Lithium Battery

Input port: Micro USB
Input requirements: 5V constant voltage power supply can be used to charge the input power, the most matching charger is 5V 1A or more
Output port: USB
Output parameters: 5V 1A / 5V 2A

Code: DC-18650-3,7V-5V PIC 1