Homemade power bank for emergency purpose

REQUIRED MATERIALS

1. female port -1
2. 9 volt battery -1
3. Battery connector -1
4. Band switch -1
5. 7805ic transistor -1
6. Soldering machine -1
7. Solidring paste and wire – 1
8. Wire packet -1
9. Usb cable -1
10. Insulation tape -1