You only need 3 simple things

- A boost converter (This is the cheapest with voltmeter, the same i use)


- A USB Cable

- And is optional, but a estandar DC power plug is usefull

Then connect, adjust the output voltage to 12v and thats all :)

Step 1: Its Simple But Very Usefull

A lot of things works on 12v, and now you have a battery for all of them.

Look a example of how many things you can use it on the right of this image.

<p>usb port provides very low current, 6v battery with much higher capacity is needed for that </p>
<p>If the output voltage is always 12V why do you need a volt-meter?</p>
<p>because it's adjustable !!! output from 10-30v ....every time you adjust it, you don't have to use multimeter.</p>
<p>The car ceiling fan rules...maybe a little impractical but very cool nonetheless. </p>

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