Step Up Power Bank

This is how it looks like

Step 1: Materials Required- Dc Step Up , Li-ion Rechargeable Cells,li-ion Charging Circuit,battery Contacts,usb Female Contacts

connect all the stuff as shown in circuit diagram

Step 2: Circuit Diagram

see the video on youtube to get fully understand about the powerbank.

my channel--- kakubotics

enjoy and keep subscribing gyz.............................