USB-C lithium battery charge and boost circuit board ideal for DIY power banks with a maximum quiescent current of 8uA.

Micro USB for charging of the 3.7v lithium cell and USB connector with boost circuit for 5v output.

Charging current up to 2A with built in charge status LED and an output current up to 2A with overvoltage protection, short circuit protection, overload protection.

Before adjusting the charging voltage, it must be powered off; 

The USB-A female socket on the back of the module is a 5V output terminal and needs to be soldered on by the user

Basic parameters

-Input voltage range: 55.5V

-Charging cut-off voltage: (4.2V/4.35V) ±0.5%:

-Charging current: 2.4A±5%

-Boost output voltage: 5V 5.15V (wire loss compensation)

-Boost output voltage ripple: 100mV

-Boost output current: 2A

-Boost conversion efficiency: 92.5% (3.6V input, 5V2A Output)

-Battery end quiescent current: 30uA

Features

-The output will be turned off when the load current is continuously less than 50mA.

-Support external buttons, connect the button to point K and the negative output, short press to turn on the power led and turn on the 5V output, and two short presses will turn off the power led and turn off the 5V output.

-When the charging current drops to 100mA after reaching the final float voltage, the charging cycle will be automatically terminated.

-When the battery voltage drops below 4.1V, the charging cycle restarts.

-When the battery voltage is lower than 2.8V, the battery will be pre-charged with a current of 180mA.