How to Make Power Bank with 9 Volt Battery

Source: Let's See Inside - Youtube

Video Title:
How to Make Power Bank with 9 Volt Battery

Video Description
Materials Required for Making Power Bank with 9 Volt Battery:
1.- L7805cv voltage regulator 2.- transistor 3.- rd 3500 usb cable 4.- 9 volt battery 5.- 9 volt battery connector
If You are an Engineer, you can try to do this easily at home

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