This tiny module can power up electronic devices that needs 5V power supply. It is very suitable if you’re going to design portable chargers for mobile devices.
This module can be supplied by single cell LiPO or AA size batteries and can output a 5V voltage for digital devices such as phone, MP3 players, and MP4 players.
For one AA battery power supply, the output current can be up to 200 mA. If you use two AA batteries, it can output current up to 500 mA, which is enough for phones, camera, microcontrollers, and other digital products.