Introduction: Portable Emergency Phone Charger

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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Comments

author
Gomi no Sensei (author)2015-11-30

Most smart phone batteries are 1500-3300mah.

A 9V battery has 50-400mah and at 500mw load has less than 300mah capacity.

You're also losing 30% of that 2 x 300mah thru the circuit.

Just exactly HOW much does this remaining 420mah charge your phone ???

Ref : http://www.powerstream.com/9V-Alkaline-tests.htm

author

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!

author
chrisjlionel (author)2015-08-02

Good idea

author
DIY Hacks and How Tos (author)2015-08-02

Cool project

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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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