How to make Mobile Phone charger using 9V Battery

How to make 5V usb Emergency Mobile phone charger ( 9v Power Bank ) from an 9V Battery and Cigarette Lighter USB Car Adapter without 7805 regulator IC. Now You can use this charger anywhere very easily.

Become a Patron 

https://www.patreon.com/LayaBro 

Blog

http://layabro.blogspot.com/ 

Follow Me

https://www.facebook.com/youtubelayabro https://twitter.com/LayaBrolaya