reuse of a 250ml slim can to create a simple and captivating travel powerbank by recycling the cells of an old laptop battery.

the system is composed specifically of a cap that houses the curcuito pcm which takes care of regulating the charge of the cells and delivering the 5v needed to charge the smartphone. in addition there are 4 18650 li-ion cells recycled from a broken laptop, in the end the back which acts as a support for the cells and protection for the electrical contacts to avoid short circuits.

the system is simple to assemble once you find the online circuit solder the cells using the cap as a template for the dimensions, solder 2 wires between the cells and the circuit (pay close attention to the polarities, all the cells go in parallel) then insert the cured in the cap and glue the cells in the cap with a little hot glue, then glue the bottom.