Powerbank Charging Circuit with Screen - 5V 2A Charger Module

 

This is the circuit inside Powerbanks. It is a module where you can charge your phone from the two USB ports on it and charge your battery from the micro USB port. Compatible with Lipo, Lion and 18650 batteries. Batteries should not be connected in series, the amperage can be increased by connecting them in parallel. You can see the charge level and charge on the screen and turn the screen on and off with the button. Moreover, you can see whether it is charging or not with the LED on it.