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This video will explain everything step by step, and here are the parts you will need:

1. Two 9v batteries (and two 9v battery clips)(and wires)

2. Cheap Car charger

3. Standard Altoids Tin

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<p>Most smart phone batteries are 1500-3300mah.</p><p> A 9V battery has 50-400mah and at 500mw load has less than 300mah capacity.</p><p>You're also losing 30% of that 2 x 300mah thru the circuit.</p><p>Just exactly HOW much does this remaining 420mah charge your phone ???</p><p>Ref : <a href="http://www.powerstream.com/9V-Alkaline-tests.htm" rel="nofollow"> http://www.powerstream.com/9V-Alkaline-tests.htm</a></p>
<p>the project was based on its simplicity and an easy-to-recreate build, and I am aware that this charger is inconvenient and not usable. Thanks for commenting though! I will make a better and more convenient version 2.0! </p>
<p>Good idea</p>
<p>Cool project</p>

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Bio: I just created a youtube channel to give how-to's and quick previews of all the projects that I make in my garage. I decided ... More »
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