USB 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 1A with built in charge status LED and an output current up to 1A with overvoltage protection, short circuit protection, overload protection.

 

Input voltage : 3.7v to 5.5v

Charging current :1A (max)

Output current :1A (max)

Output voltage : 5V

Battery charged cut of voltage : 4.2v ±1%

Battery discharge cut off voltage : 2.9v ±1%

Discharging efficiency : 85% (input 3.7V output 5V/1A)

Charging : red light will flash

Fully charged : red light on solid

Standby current : 8uA

Output : overvoltage protection, short circuit protection, overload protection