Need a battery back up for your Arduino or ESP32? This module takes care of charging your 18650 battery (not included) and supplies power to your controller when there is no normal power connection.
Input port: Micro USB
USB output type: Type-A
0.5A current charging
1 switch control USB output
Output: 3V & 1A (x3)and 5V & 4A (x3)
LED indicate: Green means full,Red means charging