How to Make an Altoids USB Charger

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Learn how to make a simple, portable USB charger for your phone from an empty Altoids tin and a 9V battery, and charge your devices while on-the-go.

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Caitlin S
that was cool
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Evelyn E
will it allow full charge ? Cool Lesson!
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Mary S
Keep it up! We will get through this mess
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Caleb S
Awesome lesson! How many times can you charge the phone on the battery?
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Emily C
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