Product description
This is a high-output Mini type-c usb charging and discharging integrated module. Compared with the 1A or 2A charging and discharging modules on the market, its output current reaches up to 3.1A, and has charge and discharge protection.

Features
3.1A synchronous boost conversion.
3A synchronous switch charging.
It supports charging and discharging at the same time.
The boost efficiency is as high as 93%.
4 LED power display.
Automatically detects phone plugging and unplugging.
Double-click the button to turn off the output, and click to turn on the output.
Type-c supports single-port input and output.
The mobile phone charging current can intelligently identify DCP.
Intelligent load identification, automatic standby.
Output overcurrent, overvoltage, short circuit protection.
Input overvoltage, overcharge, overdischarge, overcurrent discharge protection.

Instructions and Precautions
1. Before connecting the battery, connect the module to the charging head of the mobile phone through the type-c data cable, and see that the 4 lights turn on in order to confirm that the module chip is in good condition.
2. The battery voltage should be between 3.0-4.2V
3. Do not connect the positive and negative stages, otherwise the board will be burned
4. Batteries can only be connected in parallel, not in series, otherwise the board will be burned
5. When using the alligator clips to test, please do not use the mobile phone to charge
6. The battery can be 3.7V/4.2V 18650/polymer/ternary lithium battery

Package includes:
2 x Type-C USB Charge and discharge module
1 x 24AWG red and black cable 50 cm each
1 x Type-c to usb cable