KKmoon 4pcs Dual USB 5V 2.4A Mobile Power Bank Module DIY Charging Module Board

Features:
Support for USB cables with interface of ios phone, Android Type-C cable, and Micro USB.
LED digital screen shows the current battery level when charging.
The LED digital screen displays the current power when discharging, and saves the display in about 30 seconds (double click the button to resume display).
The system will provide the accurate battery indication after full charge and discharge.
Long press the button after standby, the power will display on the LED digital screen.