DIY Portable Charger
its a pain when your phone battery is low and you have to do some work and there is blackout then how will you charge your phone then you will use this emergency charger which will give a an extended juice for your phone with a 9v battery
so without further lets do this
Tools Needed
7805 ic
micro usb cable
9v battery
9v battery connector
and some basic materials
this is all you needed to do this
it costs around 1 $
thats cheap it is
Heat Up the Soldering Iron
just cut the usb in hald and connect the each wire as shown above
note before powering your phone with it just take a multi meter and check the voltage it should not excced from 5.2
otherwise your phone may be damage
You Are Already Done
that how easy and simple it is to make a emergency charger
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