Two Voltage 18650 Lithium Battery Shield V8 Mobile Power Expansion Board Module 5V/3A 3V/1A Micro USB For Arduino ESP32

This module is a portable power bank that supports two voltage outputs of 3V/1A and 5V/2.2A! The rated current of the 5V voltage output is 2.2A, and the maximum current is 3A (not recommended for overload, easy to damage the module, and speed up the service life), the current output depends on the quality of the 18650 battery! MICRO USB charging current 60OmA-800mA. When the switch is toggled to NOMAL, the current output is lower than 3Oma, it will stop for about 10 seconds, and it will turn to standby mode. When it is toggled to HOLD, no matter what the situation is, it will remain on until the battery is dead (the 2512 resistor on the back will heat up) Special attention: The installation of the battery must determine the positive and negative poles, and the positive and negative poles have been clearly marked on the board! The wrong installation will burn the module! Micro USB port input Type A USB output 0.5A current charging 1 switch to control the USB output 5-8V input voltage 3V and 1A output 5V and 2A output LED indicator (green for full, red for charging) 3V output port x3 5V output port x3 Note the "+" and "-", you should follow thedirection of the "+""_" on the PCB.