The internal battery of a power bank is charged using an external power source, like a wall outlet, and then stores the energy in chemical form. The battery uses the output port to supply the connected device with electricity when it is required.

> Options - type c / lightening
> 15W Max fast charging
> LED Power display 
> mini, convinient, portable, lightweight
> Overheat Protection
> 5000 Mah

best quality PowerBank Mini 5000 mAH Power Bank Fast Charging Samsung Type-c / Iphone Lightening supplier in shuwaikh, kuwait.